Antitrust Radar
Market atlas

Economic observatory / longitudinal evidence

Market trend observatory

Follow published concentration measures over time. Every point retains its market definition, period, source, and the limits of comparison with other observations.

Selected evidence route

Browsers / HHI
Series
4 anchors2023-2026
Sources
1 recordStatCounter Global Stats
Context
3 recordsofficial context

Public anchor horizon

Where bounded market histories exist

x = release year
line = same measure
Public concentration anchors by market and yearFifty-nine source-backed HHI, CR4, and leading-participant share anchors across eight observed market definitions. Horizontal position represents release year, color identifies the bounded measure, hollow points retain definition restrictions, dashed paths join released anchors for the same measure without estimating intervening years, and every point opens its exact market series.Beef meatpacking1980-2019Beef meatpacking; Four-participant concentration ratio; 1980; 36%; U.S. Department of Agriculture Economic Research Service.Beef meatpacking; Four-participant concentration ratio; 1995; 81%; U.S. Department of Agriculture Economic Research Service.Beef meatpacking; Four-participant concentration ratio; 2019; 85%; U.S. Department of Agriculture Economic Research Service.Wireless service2017-2023Wireless service; Herfindahl-Hirschman Index; 2017; 3,106; Federal Communications Commission.Wireless service; Herfindahl-Hirschman Index; 2021; 3,596; Federal Communications Commission.Wireless service; Herfindahl-Hirschman Index; 2023; 3,550; Federal Communications Commission.Fixed broadband2020-2024Fixed broadband; Herfindahl-Hirschman Index; 2020; 1,171; Federal Communications Commission.Fixed broadband; Herfindahl-Hirschman Index; 2021; 1,199; Federal Communications Commission.Fixed broadband; Herfindahl-Hirschman Index; 2022; 1,287; Federal Communications Commission.Fixed broadband; Herfindahl-Hirschman Index; 2023; 1,195; Federal Communications Commission.Fixed broadband; Herfindahl-Hirschman Index; 2024; 1,501; Federal Communications Commission.Browsers2023-2026Browsers; Herfindahl-Hirschman Index; 2023; 3,664; StatCounter Global Stats.Browsers; Herfindahl-Hirschman Index; 2024; 3,846; StatCounter Global Stats.Browsers; Herfindahl-Hirschman Index; 2025; 3,720; StatCounter Global Stats.Browsers; Herfindahl-Hirschman Index; 2026; 3,612; StatCounter Global Stats.Browsers; Four-participant concentration ratio; 2023; 95.14%; StatCounter Global Stats.Browsers; Four-participant concentration ratio; 2024; 95.55%; StatCounter Global Stats.Browsers; Four-participant concentration ratio; 2025; 93.61%; StatCounter Global Stats.Browsers; Four-participant concentration ratio; 2026; 93.76%; StatCounter Global Stats.Browsers; Leading-participant share; 2023; 48.62%; StatCounter Global Stats.Browsers; Leading-participant share; 2024; 52.96%; StatCounter Global Stats.Browsers; Leading-participant share; 2025; 52.32%; StatCounter Global Stats.Browsers; Leading-participant share; 2026; 50.03%; StatCounter Global Stats.Mobile operating systems2023-2026Mobile operating systems; Herfindahl-Hirschman Index; 2023; 5,157; StatCounter Global Stats.Mobile operating systems; Herfindahl-Hirschman Index; 2024; 5,055; StatCounter Global Stats.Mobile operating systems; Herfindahl-Hirschman Index; 2025; 5,094; StatCounter Global Stats.Mobile operating systems; Herfindahl-Hirschman Index; 2026; 5,337; StatCounter Global Stats.Mobile operating systems; Four-participant concentration ratio; 2023; 99.87%; StatCounter Global Stats.Mobile operating systems; Four-participant concentration ratio; 2024; 99.91%; StatCounter Global Stats.Mobile operating systems; Four-participant concentration ratio; 2025; 99.96%; StatCounter Global Stats.Mobile operating systems; Four-participant concentration ratio; 2026; 100%; StatCounter Global Stats.Mobile operating systems; Leading-participant share; 2023; 59.89%; StatCounter Global Stats.Mobile operating systems; Leading-participant share; 2024; 56.53%; StatCounter Global Stats.Mobile operating systems; Leading-participant share; 2025; 57.6%; StatCounter Global Stats.Mobile operating systems; Leading-participant share; 2026; 63.08%; StatCounter Global Stats.Search engines2023-2026Search engines; Herfindahl-Hirschman Index; 2023; 7,950; StatCounter Global Stats.Search engines; Herfindahl-Hirschman Index; 2024; 7,575; StatCounter Global Stats.Search engines; Herfindahl-Hirschman Index; 2025; 7,589; StatCounter Global Stats.Search engines; Herfindahl-Hirschman Index; 2026; 7,359; StatCounter Global Stats.Search engines; Four-participant concentration ratio; 2023; 99.62%; StatCounter Global Stats.Search engines; Four-participant concentration ratio; 2024; 99.49%; StatCounter Global Stats.Search engines; Four-participant concentration ratio; 2025; 99.41%; StatCounter Global Stats.Search engines; Four-participant concentration ratio; 2026; 99.39%; StatCounter Global Stats.Search engines; Leading-participant share; 2023; 88.88%; StatCounter Global Stats.Search engines; Leading-participant share; 2024; 86.58%; StatCounter Global Stats.Search engines; Leading-participant share; 2025; 86.71%; StatCounter Global Stats.Search engines; Leading-participant share; 2026; 85.16%; StatCounter Global Stats.Social referrals2023-2026Social referrals; Herfindahl-Hirschman Index; 2023; 3,393; StatCounter Global Stats.Social referrals; Herfindahl-Hirschman Index; 2024; 2,838; StatCounter Global Stats.Social referrals; Herfindahl-Hirschman Index; 2025; 3,804; StatCounter Global Stats.Social referrals; Herfindahl-Hirschman Index; 2026; 4,995; StatCounter Global Stats.Social referrals; Four-participant concentration ratio; 2023; 96.26%; StatCounter Global Stats.Social referrals; Four-participant concentration ratio; 2024; 90.93%; StatCounter Global Stats.Social referrals; Four-participant concentration ratio; 2025; 95.09%; StatCounter Global Stats.Social referrals; Four-participant concentration ratio; 2026; 94.38%; StatCounter Global Stats.Social referrals; Leading-participant share; 2023; 51.95%; StatCounter Global Stats.Social referrals; Leading-participant share; 2024; 45.96%; StatCounter Global Stats.Social referrals; Leading-participant share; 2025; 57.45%; StatCounter Global Stats.Social referrals; Leading-participant share; 2026; 68.94%; StatCounter Global Stats.Individual insurance2024-2024Individual insurance; Herfindahl-Hirschman Index; 2024; 3,650; KFF.AI assistants2026-2026AI assistants; Herfindahl-Hirschman Index; 2026; 4,804; StatCounter Global Stats.AI assistants; Four-participant concentration ratio; 2026; 94.77%; StatCounter Global Stats.AI assistants; Leading-participant share; 2026; 67.13%; StatCounter Global Stats.Domestic airlines2026-2026Domestic airlines; Four-participant concentration ratio; 2026; 69%; Bureau of Transportation Statistics.Domestic airlines; Leading-participant share; 2026; 17.8%; Bureau of Transportation Statistics.
HHICR4Leader shareDefinition-restricted
Public anchors
653 bounded measures
Observed markets
102 definitions awaiting measures
Comparable histories
71980-2026
Official records
1410 source records
Anchors, not estimatesEvery point is a released observation. Dashed paths expose evidence continuity without filling or carrying values across missing years.
Definitions before comparisonThe horizon locates evidence in time; it does not rank unlike products, geographies, denominators, or measure families on one value scale.

Configurable longitudinal evidence

Build an anchor series

Choose the measure, market definitions, evidence window, and transformation. Every plotted point remains tied to its public source.

Selected

1

of 5 maximum

Published

1

markets with anchors

Plotted

1

definition-eligible

Anchors

4

2023-2026

Sources

1

unique records

Events

2

context shown

Market definitions

Select up to five

1/5

Evidence window

HHI / Level

Herfindahl-Hirschman Index

Source-reported or transparently calculated concentration anchors.

No anchor in windowBrowsersUnited States / Software

No HHI anchor was released inside 2023-2026.

Browsers, 2023: 3,664; StatCounter Global StatsBrowsers, 2024: 3,846; StatCounter Global StatsBrowsers, 2025: 3,720; StatCounter Global StatsBrowsers, 2026: 3,612; StatCounter Global Stats

Dashed segments connect public anchors for legibility; they do not estimate missing years. Event lines provide timing context only and do not identify causal effects.

Active definition

Browsers

Software / United States

Anchors4
Series usecomparable anchors

Measurement basis

StatCounter browser page-view usage share

Cross-market posture

screen only

Page-view usage is a public web-analytics proxy rather than a count of browser users or a revenue measure.

Latest in window

3,612

2026

computed from public shares with residual other

StatCounter Global Stats
Open profile historyCompare definitions

Anchor rule

No annual values are filled, carried forward, or interpolated. Index and change modes re-express only the published anchors inside the chosen window.

Definition rule

Product boundaries, geographies, denominators, and metric families remain distinct. Screens are not merged into a synthetic economy-wide finding.

Policy context

Official records in the selected window

2 shown
2024decision

Court finds Google liable for unlawful search monopoly maintenance

U.S. District Court for the District of Columbia / Aug 5, 2024

2025remedy

Court orders search distribution and data-access remedies

U.S. District Court for the District of Columbia / Sep 2, 2025

2 shown records are linked to the active definition. Timing context does not establish attribution or causal effect.

Research workflow

Carry this exact trend context into analysis and publication

1 market definition + HHI / 4 released anchors / 2023-2026Canonical indicator: market-hhi / 0 of 6 profiles currently saved
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