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2022 Economic Census / NAICS 54

Professional, scientific, and technical services

The four largest firms in Professional, scientific, and technical services accounted for 3.8% of the industry's 2022 sales, value of shipments, or revenue, and its concentration (HHI 8) ranks 16 of 17 sectors in the Economic Census. What is HHI?

National employer-firm concentration for this sector, measured from sales, value of shipments, or revenue. Census categories are statistical groupings, not necessarily antitrust markets.

SectorProfessional, scientific, and technical servicesLower quartile

Revenue-based HHI

7.9

54
03,500
Same-level median 2312th percentile

National rank

#16

of 17 published

Sector rank

N/A

of 39 published

Largest 4 firms

3.8%

Share of industry revenue

Revenue

$2.7T

Sales, shipments, or revenue

Employer firms

876.2K

876,176

Employment

11.2M

11,185,562

Four source-bounded systems

Sector evidence passport

Open sector atlas

The passport juxtaposes four source-bounded sector signals for navigation. Each cell retains its own period, denominator, source, and rank universe; the cells are not combined into a sector score, merger rate, legal market, causal estimate, or assessment of competitive harm.

Industry profileProfessional, scientific, and technical servicesSector · HHI 7.9 · CR4 3.8%

  • GeographyUnited StatesNational firm totals
  • UniverseEmployer firmsFirms with payroll
  • MeasurementRevenue concentrationSales, shipments, or revenue
  • Permitted useScreening onlyNot a legal market definition

Longitudinal sector pulse

How typical detailed industries changed inside Professional, scientific, and technical services

Compare six strict-match medians, their publication coverage, and each sector's position among 17 economy-wide rows.

NAICS 54

Median HHI-point change across strict six-digit matches

+0.1 pts#11 highest change of 17 sectors

Economy median

+1.6 ptsAcross sector medians
2017 paired median
98.4
2022 paired median
85.6
Published pairs
32 of 46
Direction mix
16 up / 16 down

Interpretation

The typical published detailed-industry HHI moved +0.1 pts. This distribution statistic is separate from the official broad-sector HHI row.

Classification boundary: 2 changed and 0 new detailed rows remain outside strict deltas.

Open economy sector atlas Detailed change JSONDetailed change CSV
Sector rows summarize strict six-digit NAICS matches. Their medians are not sector HHI values, legal antitrust markets, liability findings, or causal estimates. Vintage medians and the median of row-level changes are distinct distribution statistics and need not reconcile. Publication coverage varies by metric, and revenue changes are nominal.

Census formation and sector context

Monthly formation signals beside annual sector structure

60 monthly observations for the exact NAICS 54 broad-sector contract.
Direct broad-sector join
Business Applications
81,366
Jul 2026 monthly count
Application annual change
+27.7%
Same month one year earlier
U.S. application share
14.1%
Share of national applications
High-propensity mix
21.0%
17,075 applications
Projected formations
5,170
Modeled four-quarter source projection
Establishment entry rate
12.5%
2023 annual BDS rate

Monthly source trajectory

Applications and high-propensity applications

Aug 2021 to Jul 2026
Business ApplicationsHigh-Propensity Business Applications
Sixty-month business application trajectory for Professional, scientific, and technical servicesBusiness Applications and the high-propensity subset share one count axis. The chapter describes the selected broad sector.100K75K50K25K0Aug 2021Nov 2022Feb 2024May 2025Jul 2026
890,201 applications / latest 12 months200,570 high-propensity / latest 12 months

Source clocks

Four releases, three measurement systems

Business Formation Statistics
2026-07
monthly applications and projected formations
Business Dynamics Statistics
2023
annual employer-establishment flows
Economic Census structure
2022
median across detailed-industry HHI rows
Strict concentration history
2017-2022
same-code and same-label detailed pairs
Source custody
Exact broad-sector boundary

NAICS 54 is the exact broad-sector contract used by this chapter. This atlas joins only exact broad-sector NAICS contracts across three separate Census systems: monthly Business Formation Statistics, annual Business Dynamics Statistics, and Economic Census industry structure. The release clocks, populations, denominators, and measures remain distinct. Positions are descriptive context, not composite competition scores, causal estimates, legal antitrust markets, or evidence that applications, entry, concentration, and competitive effects are interchangeable.

BLS labor and payroll context

Professional services signals across linked sectors

2 Census sectors share these BLS source-group readings; none is allocated a separate value.
Shared BLS group
Job openings
5.5%
Jun 2026 JOLTS rate
Hires
4.8%
Jun 2026 JOLTS rate
Quits
2.2%
Jun 2026 JOLTS rate
Layoffs + discharges
2.2%
Jun 2026 JOLTS rate
All employees
22.5M
22,518 thousand payroll jobs
Weekly hours
36.7
+0.3 hrs from year earlier
Hourly earnings
$45.68
+2.9% from year earlier

JOLTS worker flows

Openings and quits on native rate scales

Jul 2021 to Jun 2026
Job openings rateQuits rate
Sixty-month JOLTS openings and quits ratesJob openings and quits rates for the mapped Professional and business services source group. The measures keep their published denominators and are not a labor-market power score.10.0%7.5%5.0%2.5%0.0%Jul 2021Oct 2022Jan 2024Apr 2025Jun 2026
-0.1 pp openings / year earlier+0.3 pp quits / year earlier

CES payroll context

Payroll jobs and nominal earnings, indexed

Aug 2021 = 100
Payroll jobsHourly earnings
Sixty-month CES payroll jobs and hourly earnings indexesPayroll jobs and nominal average hourly earnings for the mapped Professional and business services source group, each independently indexed to 100 in the first displayed month. Native levels remain in the readouts.13012111310495Aug 2021Nov 2022Feb 2024May 2025Jul 2026
+0.5% payroll jobs / year earlier+2.9% nominal earnings / year earlier

Declared classification bridge

One profile, two source-owned industry groups

Selected Census parent
NAICS 54
Professional, scientific, and technical services
JOLTS group
540099
Professional and business services
CES supersector
60
Professional and business services
Mapped Census sectors
2
54, 56

Independent release clocks

Two monthly systems, no merged series

JOLTS worker flows
2026-06
60 displayed months · latest preliminary
CES payroll context
2026-07
60 displayed months · latest preliminary
Source custody
Shared-group boundary

The selected Professional, scientific, and technical services sector (NAICS 54) is one of 2 Census-sector contexts attached to the broader Professional and business services JOLTS and Professional and business services CES groups. Their published values cannot be allocated to this sector alone. JOLTS industry rates describe national labor demand and worker-flow activity in broad BLS industry groups. They do not measure employer concentration, monopsony power, wages, bargaining power, job quality, local labor-market conditions, worker substitutability, a legal labor market, or the competitive cause of a change. The job openings rate uses employment plus openings as its denominator. Hires, quits, and layoffs and discharges use employment. Rates may be compared across published industry groups within the same measure, but different measures must not be added together or treated as a common flow balance. CES employment, hours, and earnings describe national payroll jobs and establishment averages in broad private-industry groups. They do not measure unique workers, vacancies, employer concentration, monopsony power, bargaining power, job quality, a local or occupational labor market, a legal antitrust market, or the competitive cause of a change. All-employee hourly earnings are current-dollar averages and are not adjusted for inflation. Changes can reflect shifts in industry and worker composition. Employment is reported in thousands of payroll jobs, so multiple jobholders may be counted more than once. Compare industries only within the same published measure; do not add or ratio the three measures into a common score. The two releases remain separate and are not combined into a labor-market, monopsony, competition, welfare, or causal score.

BEA industry output context

Professional services in the U.S. value-added map

Exact broad-sector bridge from Census NAICS 54 to BEA line 66.
Exact sector context
GDP share
8.1%
2025 current-dollar composition
Real growth
+5.2%
2026-Q1 annualized BEA convention
Growth contribution
+0.41 pp
2026-Q1 contribution to real GDP growth
Real quantity index
160.3
2026-Q1 / 2017=100
Current value added
$2.58T
2026-Q1 seasonally adjusted annual rate

Annual composition trajectory

Share of current-dollar GDP

1997-2025
Professional services annual share of current-dollar GDPBEA value-added share from 1997 through 2025. This is an accounting composition measure, not a market share.9.0%8.0%7.0%6.0%5.0%19972004201120182025
5.8%1997+2.3 pplong-run shift8.1%2025
Source custodyU.S. Bureau of Economic Analysis / 2026-06-25GDP by Industry, value-added tablesOfficial BEA releaseAccess reviewed 2026-08-15
Exact broad-sector boundary

BEA line 66 and Census NAICS 54 share the declared broad-sector classification used by this profile. BEA value added measures an industry's contribution to GDP. It is not sales, gross output, profit, a markup, market share, concentration, a legal antitrust market, or evidence of competitive harm or causation. Current-dollar value-added shares reflect both prices and quantities. Real value added uses chained 2017 dollars and is suitable for growth comparisons, but chained-dollar industry components are not additive. Quarterly levels are seasonally adjusted at annual rates, and quarterly growth and contribution measures retain BEA's published annualized convention. The BEA table contains nested industries, cross-industry aggregates, and addenda. Only the 20 major-industry rows form the composition view; summing those rows with their children, parent aggregates, or addenda would double count activity.

BEA domestic production requirements

Production industries inside the broader Professional, scientific, and technical services sector

Parent NAICS 54 supplies a classification directory only; no requirement coefficient is assigned to this narrower profile.
Sector directory only
BEA lines in scope
3
inside NAICS 54
Annual matrices
28
1997-2024
Raw matrix cells
5,964
retained without aggregation
Net requirement
Not constructed
not additive across buyer columns
Own requirement
Not constructed
no sector diagonal constructed

Published production directory

3 BEA industries map to this parent sector

5411Legal services5415Computer systems design and related services5412OPMiscellaneous professional, scientific, and technical services
Source custodyU.S. Bureau of Economic Analysis / 2025-09-25Input-Output Accounts, domestic requirements tablesOfficial BEA tablesAccess reviewed 2026-08-15
Directory boundary

This chapter is a directory of 3 BEA summary industries classified inside parent sector Professional, scientific, and technical services (NAICS 54). No coefficient is averaged, summed across buyer columns, or allocated to Professional, scientific, and technical services (NAICS 54). A domestic total-requirements coefficient reports the U.S. output required from the supplier-row industry, directly and indirectly, per dollar of output delivered to final use by the buyer-column industry. It is not observed spending, a contract, a firm supplier link, market share, concentration, a legal antitrust market, competitive harm, or causation. Rows are supplying industries and columns are buyer industries delivering output to final use. Reading down a buyer column traces upstream requirements; reading across a supplier row traces the industries whose final-use output requires that supplier. BEA requirements tables use fixed input structures, constant returns to scale, and no input substitution. Coefficients are average, ex-post industry relationships; domestic import adjustments are estimated and do not identify firm-specific sourcing. Diagonal values include an industry's own direct and indirect requirements. Published negative coefficients are retained as accounting adjustments and must not be ranked as positive supply requirements.

Longitudinal sector profile

Business formation and job flows since 1978

46 annual BDS records compare Professional, scientific, and technical services with the national series while preserving the BDS universe.
Professional, scientific, and technical services
12.473%
2023 sector rate
United States
10.608%
2023 national rate
Sector gap
+1.865 pp
Above U.S. rate
Joined-sector rank
#6
of 17 by magnitude

Establishment entry rate

Professional, scientific, and technical services and the United States

Entering establishments as a share of the Census BDS establishment denominator.
Professional, scientific, and technical servicesUnited States
2023Professional, scientific, and technical services12.473%United States10.608%Gap +1.865 pp
1978: United States 15.146%; Professional, scientific, and technical services 17.593%1979: United States 13.970%; Professional, scientific, and technical services 17.118%1980: United States 12.806%; Professional, scientific, and technical services 16.199%1981: United States 12.797%; Professional, scientific, and technical services 16.522%1982: United States 12.464%; Professional, scientific, and technical services 16.566%1983: United States 13.389%; Professional, scientific, and technical services 17.807%1984: United States 14.534%; Professional, scientific, and technical services 17.282%1985: United States 13.810%; Professional, scientific, and technical services 17.330%1986: United States 14.095%; Professional, scientific, and technical services 16.905%1987: United States 14.325%; Professional, scientific, and technical services 16.441%1988: United States 13.959%; Professional, scientific, and technical services 16.499%1989: United States 13.368%; Professional, scientific, and technical services 15.200%1990: United States 12.683%; Professional, scientific, and technical services 14.562%1991: United States 12.358%; Professional, scientific, and technical services 14.268%1992: United States 11.577%; Professional, scientific, and technical services 13.502%1993: United States 11.509%; Professional, scientific, and technical services 13.697%1994: United States 11.885%; Professional, scientific, and technical services 13.693%1995: United States 12.058%; Professional, scientific, and technical services 14.121%1996: United States 11.795%; Professional, scientific, and technical services 13.997%1997: United States 12.200%; Professional, scientific, and technical services 14.520%1998: United States 11.438%; Professional, scientific, and technical services 14.665%1999: United States 11.115%; Professional, scientific, and technical services 14.037%2000: United States 10.848%; Professional, scientific, and technical services 13.309%2001: United States 10.990%; Professional, scientific, and technical services 13.610%2002: United States 11.911%; Professional, scientific, and technical services 14.006%2003: United States 11.425%; Professional, scientific, and technical services 13.197%2004: United States 11.511%; Professional, scientific, and technical services 13.516%2005: United States 11.615%; Professional, scientific, and technical services 13.187%2006: United States 12.495%; Professional, scientific, and technical services 14.675%2007: United States 11.761%; Professional, scientific, and technical services 13.262%2008: United States 10.307%; Professional, scientific, and technical services 12.077%2009: United States 9.281%; Professional, scientific, and technical services 11.481%2010: United States 9.495%; Professional, scientific, and technical services 11.925%2011: United States 9.886%; Professional, scientific, and technical services 12.233%2012: United States 10.018%; Professional, scientific, and technical services 12.059%2013: United States 9.807%; Professional, scientific, and technical services 12.357%2014: United States 9.906%; Professional, scientific, and technical services 12.432%2015: United States 10.025%; Professional, scientific, and technical services 12.258%2016: United States 10.194%; Professional, scientific, and technical services 12.101%2017: United States 9.675%; Professional, scientific, and technical services 11.217%2018: United States 9.414%; Professional, scientific, and technical services 11.105%2019: United States 9.613%; Professional, scientific, and technical services 11.525%2020: United States 9.637%; Professional, scientific, and technical services 11.947%2021: United States 10.845%; Professional, scientific, and technical services 13.022%2022: United States 11.651%; Professional, scientific, and technical services 13.442%2023: United States 10.608%; Professional, scientific, and technical services 12.473%
1978
17.593%
-5.12 pp to latest
2018
11.105%
Higher than 2018
Series high / 1983
17.807%
Highest published rate
Series low / 2018
11.105%
Lowest published rate

Exact annual series

Sector and national values

2023 back to 1978
Establishment entry rate for Professional, scientific, and technical services and the United States, with the sector-minus-national gap.
Year54United StatesGap
202312.473%10.608%+1.865 pp
202213.442%11.651%+1.791 pp
202113.022%10.845%+2.177 pp
202011.947%9.637%+2.31 pp
201911.525%9.613%+1.912 pp
201811.105%9.414%+1.691 pp
201711.217%9.675%+1.542 pp
201612.101%10.194%+1.907 pp
201512.258%10.025%+2.233 pp
201412.432%9.906%+2.526 pp
201312.357%9.807%+2.55 pp
201212.059%10.018%+2.041 pp
201112.233%9.886%+2.347 pp
201011.925%9.495%+2.43 pp
200911.481%9.281%+2.2 pp
200812.077%10.307%+1.77 pp
200713.262%11.761%+1.501 pp
200614.675%12.495%+2.18 pp
200513.187%11.615%+1.572 pp
200413.516%11.511%+2.005 pp
200313.197%11.425%+1.772 pp
200214.006%11.911%+2.095 pp
200113.61%10.99%+2.62 pp
200013.309%10.848%+2.461 pp
199914.037%11.115%+2.922 pp
199814.665%11.438%+3.227 pp
199714.52%12.2%+2.32 pp
199613.997%11.795%+2.202 pp
199514.121%12.058%+2.063 pp
199413.693%11.885%+1.808 pp
199313.697%11.509%+2.188 pp
199213.502%11.577%+1.925 pp
199114.268%12.358%+1.91 pp
199014.562%12.683%+1.879 pp
198915.2%13.368%+1.832 pp
198816.499%13.959%+2.54 pp
198716.441%14.325%+2.116 pp
198616.905%14.095%+2.81 pp
198517.33%13.81%+3.52 pp
198417.282%14.534%+2.748 pp
198317.807%13.389%+4.418 pp
198216.566%12.464%+4.102 pp
198116.522%12.797%+3.725 pp
198016.199%12.806%+3.393 pp
197917.118%13.97%+3.148 pp
197817.593%15.146%+2.447 pp

Sector structure lab

Map concentration inside Professional, scientific, and technical services

Each bubble is one six-digit industry. Horizontal position is revenue-based HHI, vertical position is CR4, and bubble area follows the selected economic scale.

Detailed industries48Six-digit rows
Median HHI94.939 published
Median CR417.8%48 published
HHI 2,500+0Detailed rows
Published weight91.4%Revenue in chart

Bubble area = revenue

39 rows have both HHI and CR4 / 9 HHI values withheld

Top-five revenue share / 52.5%
NAICS 541330: Engineering services; HHI 34.6; CR4 8.4%; Revenue $304.3B; 11.41% of sectorNAICS 541511: Custom computer programming services; HHI 54.7; CR4 11.8%; Revenue $278.5B; 10.44% of sectorNAICS 541512: Computer systems design services; HHI 189.6; CR4 21.1%; Revenue $243.3B; 9.12% of sectorNAICS 541611: Administrative management and general management consulting services; HHI 118.4; CR4 17.8%; Revenue $219.1B; 8.21% of sectorNAICS 541715: Research and development in the physical, engineering, and life sciences (except nanotechnology and biotechnology); HHI 117.2; CR4 17.7%; Revenue $195.7B; 7.34% of sectorNAICS 541211: Offices of certified public accountants; HHI 601.6; CR4 47.7%; Revenue $144.7B; 5.43% of sectorNAICS 541714: Research and development in biotechnology (except nanobiotechnology); HHI 90.9; CR4 12.9%; Revenue $91B; 3.41% of sectorNAICS 541613: Marketing consulting services; HHI 24.1; CR4 7.1%; Revenue $77.5B; 2.90% of sectorNAICS 541519: Other computer related services; HHI 186.6; CR4 23.2%; Revenue $55B; 2.06% of sectorNAICS 541310: Architectural services; HHI 18; CR4 5.5%; Revenue $48.6B; 1.82% of sectorNAICS 541713: Research and development in nanotechnology; HHI 551.3; CR4 38.6%; Revenue $44.5B; 1.67% of sectorNAICS 541219: Other accounting services; HHI 16; CR4 6.7%; Revenue $30.3B; 1.14% of sectorNAICS 541990: All other professional, scientific, and technical services; HHI 77.5; CR4 14.2%; Revenue $28B; 1.05% of sectorNAICS 541380: Testing laboratories and services; HHI 103; CR4 15.3%; Revenue $27.9B; 1.05% of sectorNAICS 541214: Payroll services; HHI 311; CR4 30.5%; Revenue $26.6B; 1.00% of sectorNAICS 541614: Process, physical distribution, and logistics consulting services; HHI 30; CR4 7.2%; Revenue $26B; 0.98% of sectorNAICS 541910: Marketing research and public opinion polling; HHI 189.2; CR4 21.5%; Revenue $25.2B; 0.94% of sectorNAICS 541612: Human resources consulting services; HHI 281.3; CR4 31.2%; Revenue $24.6B; 0.92% of sectorNAICS 541513: Computer facilities management services; HHI 80.3; CR4 13.8%; Revenue $23.8B; 0.89% of sectorNAICS 541890: Other services related to advertising; HHI 94.9; CR4 16.2%; Revenue $22.1B; 0.83% of sectorNAICS 541620: Environmental consulting services; HHI 62.6; CR4 12.1%; Revenue $21.4B; 0.80% of sectorNAICS 541410: Interior design services; HHI 4.7; CR4 3.3%; Revenue $19.7B; 0.74% of sectorNAICS 541820: Public relations agencies; HHI 73.7; CR4 14.4%; Revenue $15.8B; 0.59% of sectorNAICS 541370: Surveying and mapping (except geophysical) services; HHI 26.5; CR4 8.7%; Revenue $11B; 0.41% of sectorNAICS 541430: Graphic design services; HHI 4.9; CR4 2.7%; Revenue $9.8B; 0.37% of sectorNAICS 541720: Research and development in the social sciences and humanities; HHI 390.2; CR4 30.0%; Revenue $9.3B; 0.35% of sectorNAICS 541830: Media buying agencies; HHI 441.6; CR4 34.5%; Revenue $9B; 0.34% of sectorNAICS 541860: Direct mail advertising; HHI 106; CR4 14.8%; Revenue $8.6B; 0.32% of sectorNAICS 541930: Translation and interpretation services; HHI 395.4; CR4 35.1%; Revenue $6.9B; 0.26% of sectorNAICS 541320: Landscape architectural services; HHI 25; CR4 7.1%; Revenue $6.6B; 0.25% of sectorNAICS 541199: All other legal services; HHI 152.5; CR4 20.2%; Revenue $6B; 0.22% of sectorNAICS 541350: Building inspection services; HHI 33.1; CR4 7.6%; Revenue $4.5B; 0.17% of sectorNAICS 541420: Industrial design services; HHI 187.4; CR4 20.9%; Revenue $4B; 0.15% of sectorNAICS 541490: Other specialized design services; HHI 160.9; CR4 21.2%; Revenue $3.3B; 0.12% of sectorNAICS 541922: Commercial photography; HHI 19.4; CR4 6.6%; Revenue $2.6B; 0.10% of sectorNAICS 541870: Advertising material distribution services; HHI 311.3; CR4 27.0%; Revenue $2.4B; 0.09% of sectorNAICS 541340: Drafting services; HHI 84.4; CR4 15.0%; Revenue $2.2B; 0.08% of sectorNAICS 541360: Geophysical surveying and mapping services; HHI 213.9; CR4 20.8%; Revenue $1.5B; 0.06% of sectorNAICS 541110: Offices of lawyers; HHI 11.4; CR4 4.0%; Revenue $356B; 13.35% of sector
0-499500-9991,000-1,4991,500-2,4992,500+Withheld

Disclosure lane

Rows missing HHI or CR4 stay outside the numerical plane.

9 rows / 8.6% of revenue
541940Veterinary services$62.8B / 2.36%541810Advertising agencies$62.4B / 2.34%541690Other scientific and technical consulting services$53.5B / 2.01%541618Other management consulting services$12.9B / 0.48%

Active detailed industry

Offices of lawyersNAICS 541110
HHI11.4
CR44.0%
Revenue$356B#1 / 13.35% of sector
Open evidence profile

Largest by revenue

Hover or focus to inspect

Top 8
01Offices of lawyers541110$356B13.3%02Engineering services541330$304.3B11.4%03Custom computer programming services541511$278.5B10.4%04Computer systems design services541512$243.3B9.1%05Administrative management and general management consulting services541611$219.1B8.2%06Research and development in the physical, engineering, and life sciences (except nanotechnology and biotechnology)541715$195.7B7.3%07Offices of certified public accountants541211$144.7B5.4%08Research and development in biotechnology (except nanobiotechnology)541714$91B3.4%

Continue analysis

Compare top fourCurrent revenue leadersSector JSON48 detailed rowsSector CSVNotebook-ready packet

Bubble size describes economic weight inside this NAICS sector. HHI and CR4 remain national statistical screens, not product-market definitions or findings of market power.

Sector intelligence dossier

From industry structure to antitrust evidence

Join the Census screen for Professional, scientific, and technical services to descendant curated markets, public enforcement records, research outputs, and the next evidence queue.

Observatory coverage

Research coverage gap

NAICS 54 / national sector screen

Detailed industries

48

39 HHI published

Curated markets

0

0 exact NAICS crosswalks

Policy actions

0

0 linked reports

Evidence sources

0

0 Census HHI at 2,500+

Explicit research gap

No descendant market dossier is curated yet

The sector remains fully available as a Census structure screen. Product boundaries, geographic scope, and market-specific public sources still need to be assembled before a legal-market bridge can be published.

Market-definition protocol

Start with published Census signals

541211Offices of certified public accountants601.6541713Research and development in nanotechnology551.3541830Media buying agencies441.6

Descendant NAICS codes provide a research crosswalk only. They do not make a curated product and geographic market equivalent to its Census industry, and market metrics are never aggregated into a sector score.

Review method

Firm concentration ladder

How much revenue the largest firms hold

Each rung widens the group of largest firms included in the Census concentration ratio.

CR4Four largest firms3.8%
CR8Eight largest firms6.3%
CR20Twenty largest firms10.4%
CR50Fifty largest firms16.3%

Same-level benchmark

Position in the hierarchy

MeasureThis rowMedian
HHI7.923
CR43.8%6.9%
Revenue$2.7T$1.3T
Firms876.2K265.5K

HHI distance from median

-15.1

NAICS hierarchy

Move up or down the classification tree

Level 2 of 6
54 Professional, scientific, and technical services

Direct child categories

541Professional, scientific, and technical services

Federal merger-review composition

Where NAICS 54 appears in HSR review releases

Each release aggregates its own published acquired-entity 3-digit rows. Volume, review stages, labels, denominators, and source custody remain separate from the Census concentration screen.

Open filtered HSR atlas

FY2023 sector aggregate

Professional, scientific, and technical services

1 published 3-digit row

Exact code + normalized label
186adjusted transactionsRank 4 of 19classified HSR sectors
Published share
10.7%
of adjusted release transactions
Agency clearances
15
8.1% of release / rank 5
Second Requests
4
10.8% of release / rank 4
Intra-industry flags
1
1.3% of release / rank 13

FY2024 sector aggregate

Professional, scientific, and technical services

1 published 3-digit row

Exact code + normalized label
259adjusted transactionsRank 3 of 19classified HSR sectors
Published share
13.1%
of adjusted release transactions
Agency clearances
16
8.7% of release / rank 3
Second Requests
1
1.7% of release / rank 13
Intra-industry flags
6
7.5% of release / rank 5

Adjacent-release shift

Stable HSR sector code and label

FY2023 to FY2024

Exact HSR sector code 54 is published in FY2023 and FY2024 with a stable source label. The deltas compare adjacent release aggregates without recoding their 3-digit rows.

Transactions
+73
Published share
+2.4 pp
Clearances
+1
Second Requests
-3
Intra-industry
+5
Published rows
0

Interpretation boundary

This bridge joins only the exact broad-sector NAICS code published by both sources. The 2022 Economic Census sector row measures economy-wide employer-firm structure, while each HSR sector aggregate sums the release's published acquired-entity 3-digit rows. The shared code does not define a legal antitrust market, measure a sector merger rate, establish competitive harm, or score agency performance.

Intra-industry field

An intra-industry transaction means the acquiring and acquired persons both reported revenue in the same 3-digit NAICS code. It does not establish a horizontal overlap, relevant antitrust market, or competitive effect.

Nearest structural neighbors

Comparable fingerprints across the economy

Smallest mean national-percentile gaps across HHI, CR4, CR8, revenue, employment, and employer firms, using the same published dimensions as this row.

Evidence access

Reuse this exact row

Filtered JSONNAICS 54Download CSVOne-row data packetCensus source archiveEC2200SIZECONCEN

Source citation

U.S. Census Bureau, 2022 Economic Census, EC2200SIZECONCEN: Selected Sectors - Concentration of Largest Firms for the United States, released April 2025.

Industry screen, not market conclusion

A NAICS industry is a statistical classification, not a legally defined antitrust market. Use these national revenue concentration measures to screen where deeper product and geographic market analysis may be warranted, not to infer market power or liability.

Market definition method
Professional, scientific, and technical services industry concentration (NAICS 54) | Antitrust Radar