SEC annual filings · Engineering, accounting and research services
Which companies in engineering, accounting and research services have the most revenue in the SEC data we read?
In 2025, 20 companies in engineering, accounting and research services that have had revenue of one billion dollars or more are ranked; IQVIA Holdings Inc. reported the most, $16.3 billion. The newest annual report in the data is for the fiscal year ended .
Right now
IQVIA Holdings Inc. reported the most revenue in 2025, $16.3 billion.
20 companies in engineering, accounting and research services are ranked for 2025.
Share of revenueOurs
Together they reported $109.2 billion of revenue, 0.4% of the revenue of all $25.2 trillion reported by the ranked companies.
As filed
Facts as filed with the SEC, and our arithmetic on them. Not investment advice.
Total assets are the figure the SEC data holds for the fiscal year end; a dash can mean the data holds a balance of another date.
Understanding the ranking
Where it stands today
IQVIA Holdings Inc. reported $16.3 billion, the most in 2025.
How is the ranking made?
The ranking lists companies by the revenue they filed with the SEC for their fiscal year in 2025, the largest first.
Read more
A company is in the ranking when its latest annual report shows revenue of one billion dollars or more, and stays in it afterwards. A company that has stopped filing keeps its page and is not ranked.
The numbers behind the chart
Which companies in engineering, accounting and research services reported the most revenue?20 companies
| Company | Rank | Symbol | Revenue | Profit or loss | Total assets |
|---|---|---|---|---|---|
| IQVIA Holdings Inc. | 1 | IQV | $16.3B | $1.36B | $29.9B |
| AECOM | 2 | ACM | $16.1B | $562M | – |
| Booz Allen Hamilton Holding Corp | 3 | BAH | $11.2B | $850M | – |
| Icon plc | 4 | ICLR | $8.25B | $229M | $16.3B |
| Paychex Inc | 5 | PAYX | $6.51B | $1.76B | – |
| Gartner Inc | 6 | IT | $6.50B | $729M | $8.09B |
| Tetra Tech Inc | 7 | TTEK | $5.44B | – | – |
| Incyte Corp | 8 | INCY | $5.14B | $1.29B | $6.96B |
| Genpact Ltd | 9 | G | $5.08B | $552M | $5.84B |
| V2X, Inc. | 10 | VVX | $4.48B | $77.9M | $3.27B |
| Charles River Laboratories International, Inc. | 11 | CRL | $4.02B | −$144M | $7.14B |
| FTI Consulting, Inc | 12 | FCN | $3.79B | $271M | $3.49B |
| Astrana Health, Inc. | 13 | ASTH | $3.18B | $24.0M | $2.22B |
| UL Solutions Inc. | 14 | ULS | $3.05B | $325M | $2.92B |
| Medpace Holdings, Inc. | 15 | MEDP | $2.53B | $451M | $1.98B |
| Evolent Health, Inc. | 16 | EVH | $1.88B | −$579M | $1.90B |
| ICF International, Inc. | 17 | ICFI | $1.87B | $92.0M | $2.05B |
| Huron Consulting Group Inc. | 18 | HURN | $1.70B | $105M | $1.53B |
| VSE Corp | 19 | VSEC | $1.11B | $11.7M | $2.03B |
| Premier, Inc. | 20 | – | $1.01B | – | – |
The table scrolls sideways; the first column stays in place.
What does the ranking leave out, and where is it from?Limits and source
What this number cannot tell you
- Only companies with a revenue figure for the ranking year that passes our checks are ranked, the largest first; equal figures share a rank.
- A company's figures are its own. A company that files together with a parent or a subsidiary is ranked on its own figure, so the same business can appear twice, and a sum of revenue counts it twice.
- Total assets are shown only when the SEC data dates them within ten days of the fiscal year end, and profit only when its period ends within sixty days of it.
- A dash is a gap. Either the company did not report that figure for that year, or the SEC data holds it for another date or period than the year asks for. The dash says which when it is pointed at.
Observed .
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