Largest professional services companies
Every US-listed professional services company we cover, 48 of them, ranked by market capitalisation, with revenue and earnings taken from their SEC filings.
Combined market cap
$60.702 B
0.06% of all US-listed value
Companies
48
Ranked #101 of 152 industries
Average
$1.265 B
Mean market cap per company
| # | Name | Market cap | Close | Session | Country |
|---|---|---|---|---|---|
| 1 | CgiGIB | $16.0B | $69.00 | -0.86% | Canada |
| 2 | Booz Allen HamiltonBAH | $8.26B | $68.69 | +0.81% | United States |
| 3 | GenpactG | $5.63B | $33.65 | +0.60% | Bermuda |
| 4 | Fti ConsultingFCN | $3.80B | $137.73 | +0.09% | United States |
| 5 | Robert HalfRHI | $3.48B | $33.95 | +0.83% | United States |
| 6 | ExponentEXPO | $3.28B | $68.95 | -0.33% | United States |
| 7 | Huron Consulting GroupHURN | $2.49B | $156.61 | -0.41% | United States |
| 8 | ManpowerGroupMAN | $2.46B | $52.87 | +1.93% | United States |
| 9 | Astrana HealthASTH | $1.84B | $37.14 | +0.38% | United States |
| 10 | InsperityNSP | $1.84B | $48.23 | +3.90% | United States |
| 11 | ICF InternationalICFI | $1.49B | $82.85 | -0.29% | United States |
| 12 | EverforthEFOR | $1.43B | $34.91 | -2.95% | United States |
| 13 | Amn Healthcare ServicesAMN | $1.41B | $36.53 | -0.55% | United States |
| 14 | KforceKFRC | $926.6M | $51.74 | +2.09% | United States |
| 15 | Barrett Business ServicesBBSI | $766.3M | $31.62 | +1.09% | United States |
| 16 | Bowman Consulting GroupBWMN | $741.8M | $42.79 | +0.00% | United States |
| 17 | Rmr GroupRMR | $565.6M | $17.63 | +0.00% | United States |
| 18 | Kelly ServicesKELYA | $552.2M | $15.90 | +2.19% | United States |
| 19 | Roma Green FinanceROMA | $520.6M | $8.74 | +0.00% | Hong Kong |
| 20 | OnterrisONT | $499.4M | $14.22 | -2.07% | United States |
| 21 | Rcm TechnologiesRCMT | $294.4M | $41.40 | +0.22% | United States |
| 22 | TSSTSSI | $291.8M | $10.34 | -0.48% | United States |
| 23 | Information Services GroupIII | $280.3M | $5.79 | +1.40% | United States |
| 24 | TrueBlueTBI | $273.7M | $8.99 | +0.22% | United States |
| 25 | Hackett GroupHCKT | $267.4M | $10.75 | +0.23% | United States |
| 26 | HireQuestHQI | $256.5M | $18.45 | -2.02% | United States |
| 27 | ATIFAUC | $189.9M | $8.58 | -1.49% | United States |
| 28 | EnigmatigEGG | $130.6M | $4.69 | -1.16% | Unknown |
| 29 | RTB DigitalRTB | $126.1M | $8.43 | -3.44% | United States |
| 30 | Mastech DigitalMHH | $81.3M | $6.77 | -1.31% | United States |
| 31 | TTECTTEC | $72.0M | $1.46 | +8.15% | United States |
| 32 | DLHDLHC | $60.9M | $4.20 | +0.24% | United States |
| 33 | CastellumCTM | $59.8M | $0.63 | -0.61% | United States |
| 34 | BgsfBGSF | $50.2M | $4.70 | -0.63% | United States |
| 35 | Star EquitySTRR | $36.9M | $10.00 | -0.10% | United States |
| 36 | Aeries TechnologyAERT | $36.3M | $6.92 | -4.29% | United States |
| 37 | Acco GroupACCL | $36.0M | $2.59 | +0.39% | Hong Kong |
| 38 | rYojbabaRYOJ | $32.2M | $2.79 | +1.46% | Japan |
| 39 | T3 DefenseDFNS | $21.2M | $6.51 | -2.84% | United States |
| 40 | Zenta GroupZTG | $18.9M | $0.79 | +0.33% | Unknown |
| 41 | ACCESS NewswireACCS | $18.4M | $4.80 | -1.03% | United States |
| 42 | Hang Feng Technology InnovationFOFO | $16.1M | $2.04 | +0.99% | Hong Kong |
| 43 | Lichen InternationalLICN | $15.9M | $0.97 | +6.59% | China |
| 44 | Greenpro CapitalGRNQ | $15.3M | $8.45 | +0.59% | China |
| 45 | YYForceYFOR | $13.0M | $1.01 | -10.62% | Singapore |
| 46 | CISO GlobalCISO | $9.51M | $0.21 | +0.29% | United States |
| 47 | Addentax GroupATXG | $6.86M | $3.26 | -0.00% | China |
| 48 | Intelligent GroupINTJ | $4.84M | $3.15 | +10.14% | Hong Kong |
All 48 companies. One row per company, with secondary share classes folded into their primary listing. Updated 9 Oct 2026.
Sectors professional services companies sit in
Other industries
Semiconductors 100Computer Software: Programming Data Processing 77Computer Software: Prepackaged Software 234Computer Manufacturing 10Biotechnology: Pharmaceutical Preparations 500Major Banks 245Industrial Machinery/Components 212Catalog/Specialty Distribution 30Business Services 92Commercial Banks 35Auto Manufacturing 29Integrated oil Companies 16Oil & Gas Production 116Investment Bankers/Brokers/Service 68Real Estate Investment Trusts 175Department/Specialty Retail Stores 13Telecommunications Equipment 84Electronic Components 21Beverages (Production/Distribution) 36Electric Utilities: Central 61Finance: Consumer Services 165Consumer Electronics/Appliances 23Biotechnology: Biological Products (No Diagnostic Substances) 160Medical Specialities 44All industries β
Figures come from SEC filings and daily market prices. Companies listed only outside the US are not covered: see methodology.