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Social Media

Leader: Meta (FB+IG) — 42.0% S1 · 75.0% CR3

S1
42.0%
leader
CR3
75.0%
top 3 combined
HHI
2,450
Moderately concentrated
MARKET SIZE
$80B
US

How this is calculated

FORMULA
S1 = Meta (FB+IG) us social ad revenue / total us social ad revenue = 42.0%
CR3 = Meta (FB+IG) + TikTok + YouTube = 75.0%
HHI = Σ(share²) = 2,450 (Moderately concentrated (HHI 1,500–2,500))
DENOMINATOR
US Social Ad Revenue — $80B (US)
Total US social network ad spend; DAU used as secondary proxy.
Size from: eMarketer US Social Network Ad Spending
TOP 3 PLAYERS
#1Meta (FB+IG)42.0%
#2TikTok19.0%
#3YouTube14.0%
METHODOLOGY NOTE
Meta's (Facebook + Instagram) share of US social ad revenue per eMarketer's annual tracker. Cross-validated against Meta's US ad revenue geography disclosure in the 10-K and Alphabet's YouTube segment.
SOURCES
Year: 2025
Geo: US
Firms: 8

Historical S1 / CR3 trajectory

2005S1: 5%CR3: 25%MySpace era
2010S1: 28%CR3: 55%Facebook overtakes
2015S1: 45%CR3: 70%Peak Facebook + IG
2020S1: 48%CR3: 78%COVID bump + TikTok rising
2025S1: 42%CR3: 75%TikTok shares with Meta

Labor economics

REV / EMPLOYEE (leader)
$2.2M
industry avg $1.8M
SG&A % (leader)
12%
of revenue

Meta FY2025 SG&A 12.0% — highest rev/emp in dataset after platform leverage

See full Labor & AI analysis →

Related markets

Search Engines
Google
84.1%
CR3 97.5%
Digital Advertising
Google
23.9%
CR3 62.1%
E-commerce
Amazon
40.5%
CR3 50.5%
Web Browser
Chrome
65.1%
CR3 88.5%
Mobile OS
Android
72.8%
CR3 100.0%

Source Quality Hierarchy

Every market has a primary source plus 1–3 validation sources. Revenue numerators come from SEC 10-K filings; denominators validated against the Economic Census where available.

TIER 1Authoritative anchorsGovernment data + SEC filings
US Economic Census (data.census.gov) · SEC EDGAR / Company 10-Ks · BEA Industry Value-Added (FRED) · BLS QCEW · USGS Mineral Commodity Summaries · EIA Refinery Capacity Report · FDA device listings
TIER 2Leading commercial trackersIndustry-standard paid trackers
IDC Semiannual Software Tracker · Gartner Market Share & Magic Quadrant · IBISWorld NAICS reports · StatCounter Global Stats · eMarketer / Insider Intelligence · Synergy Research Group
TIER 3Category specialistsBest-in-class niche authorities
SIPRI (aerospace & defense) · IQVIA (pharma) · TrendForce (semiconductors) · CIMdata (CAD/PLM) · Nilson Report (payments) · Am Law 100 (legal) · ENR Top 500 (A&E) · AM Best (insurance) · SIA (staffing) · Ad Age (agencies) · Barron's / Cerulli (wealth) · Evaluate MedTech · Nielsen Gauge (streaming) · Gridwise (ride-hail) · Bloomberg Second Measure (delivery) · RC Top 100 (roofing) · SDM Top 100 (fire/safety) · Big 4 annual reports · ALM Intelligence (consulting)

Data vintage: Q2 2025 research compilation. Labels updated 2026-Q2. Tier 1 sources refreshed from FY2025 SEC filings where available. For full methodology see the Methodology page.