Top 36 Surface Transportation Board Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Avineon, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,194,086	16.8%	Rank history: #2 in FY2022, #2 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
2	Ernst & Young LLP Top NAICS codes 541211 Offices of Certified Public Accountants	$725,000	10.2%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
3	Jeskell Systems LLC Top NAICS codes 541519 Other Computer Related Services	$696,107	9.8%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
4	Goldbelt, Incorporated Through CP Marine, LLC Top NAICS codes 541511 Custom Computer Programming Services	$594,336	8.3%	Rank history: not on the FY2022 list, #4 in FY2023, #1 in FY2024 and #1 in FY2025; new, not ranked in FY2020.
5	Accenture Federal Services LLC Top NAICS codes 541512 Computer Systems Design Services	$521,671	7.3%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
6	Zdaas LLC Top NAICS codes 541511 Custom Computer Programming Services	$495,710	7.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
7	ICF International, Inc. Through Incentive Technology Group LLC Top NAICS codes 541511 Custom Computer Programming Services	$441,677	6.2%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
8	Choisys Technology Inc. Top NAICS codes 511210 Software Publishers	$161,550	2.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
9	Verizon Communications Inc. 2 awardees, including Verizon Business Network Services LLC and Cellco Partnership Top NAICS codes 517110 Wired Telecommunications Carriers 541519 Other Computer Related Services	$149,223	2.1%	Rank history: #6 in FY2022, #7 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
10	Lumen Technologies, Inc. Through Lumen Technologies Government Solutions, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$143,405	2.0%	Rank history: #10 in FY2022, #9 in FY2023, #16 in FY2024 and not on the FY2025 list; down 1 since FY2020.
11	Appereon Business Solutions Inc. Top NAICS codes 611710 Educational Support Services	$130,000	1.8%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
12	Assurance Data Inc. Top NAICS codes 511210 Software Publishers	$115,730	1.6%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
13	Insight Public Sector Inc. 2 awardees Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers 541519 Other Computer Related Services	$109,983	1.5%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
14	Thomson Reuters (Tax & Accounting) Inc. Through West Publishing Corporation Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$81,805	1.1%	Rank history: not on the FY2022 list, #10 in FY2023, #12 in FY2024 and not on the FY2025 list; down 2 since FY2020.
15	Government of District of Columbia Through District of Columbia, Government Of Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$80,828	1.1%	Rank history: not on the FY2022 list, #14 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
16	Reed Elsevier Inc. Through Relx Inc. Top NAICS codes 511120 Periodical Publishers	$74,040	1.0%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
17	Washington Metropolitan Area Transit Authority Top NAICS codes 485999 All Other Transit and Ground Passenger Transportation	$74,000	1.0%	Rank history: not on the FY2022–FY2024 lists and #12 in FY2025; down 7 since FY2020.
18	Lumen Technologies Government Solutions, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$61,593	0.9%	Rank history: #9 in FY2022, not on the FY2023–FY2024 lists and #16 in FY2025; new, not ranked in FY2020.
19	CDW Corporation Through CDW Government LLC Top NAICS codes 511210 Software Publishers 541512 Computer Systems Design Services 541519 Other Computer Related Services	$59,646	0.8%	Rank history: not on the FY2022 list, #8 in FY2023, #11 in FY2024 and not on the FY2025 list; down 3 since FY2020.
20	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers	$47,080	0.7%	Rank history: not on the FY2022 list, #15 in FY2023, #17 in FY2024 and #17 in FY2025; down 9 since FY2020.
21	Sirius Computer Solutions, LLC Through Sirius Federal LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$44,479	0.6%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
22	Xerox Holdings Corp Through Xerox Corporation Top NAICS codes 333316 Photographic and Photocopying Equipment Manufacturing	$28,025	0.4%	Rank history: #19 in FY2022, #27 in FY2023, #23 in FY2024 and not on the FY2025 list; down 2 since FY2020.
23	Govsmart, Inc. Top NAICS codes 511210 Software Publishers	$26,439	0.4%	Rank history: not on the FY2022 list, #18 in FY2023, #22 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
24	CTG Federal, LLC Top NAICS codes 511210 Software Publishers	$25,052	0.4%	Rank history: #20 in FY2022, #19 in FY2023, #13 in FY2024 and #23 in FY2025; down 7 since FY2020.
25	Science Applications International Corporation Top NAICS codes 541519 Other Computer Related Services	$22,177	0.3%	Rank history: #4 in FY2022, #1 in FY2023, #3 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
26	Fraxion (PTY) Ltd Through Fraxion Spend Management LLC Top NAICS codes 511210 Software Publishers	$19,300	0.3%	Rank history: #27 in FY2022, #25 in FY2023, #31 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
27	Sinclair Broadcast Group Inc. Through Politico, LLC Top NAICS codes 511210 Software Publishers	$19,078	0.3%	Rank history: #21 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
28	Trimble Inc. Through Trimble Maps Inc. Top NAICS codes 511210 Software Publishers	$16,141	0.2%	Rank history: not on the FY2022 list, #29 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
29	Metaflows Inc. Top NAICS codes 561990 All Other Support Services	$15,487	0.2%	Rank history: not on the FY2022 list, #31 in FY2023, #28 in FY2024 and #31 in FY2025; down 5 since FY2020.
30	Datawatch Systems, Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$14,280	0.2%	Rank history: #25 in FY2022, #24 in FY2023, #30 in FY2024 and #29 in FY2025; down 5 since FY2020.
31	Diltex, Inc. Top NAICS codes 541519 Other Computer Related Services	$13,380	0.2%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
32	Blue TECH Inc. Top NAICS codes 515210 Cable and Other Subscription Programming	$12,241	0.2%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
33	Executive Information Systems, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$11,025	0.2%	Rank history: #29 in FY2022, #28 in FY2023, not on the FY2024 list and #33 in FY2025; down 3 since FY2020.
34	Reliable Government Solutions Incorporated Top NAICS codes 541513 Computer Facilities Management Services	$7,170	0.1%	Rank history: #30 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
35	Healthequity, Inc. Top NAICS codes 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds	$2,290	<0.1%	Rank history: not on the FY2022 list, #32 in FY2023, not on the FY2024 list and #35 in FY2025; new, not ranked in FY2020.
36	Economic Systems Inc. Top NAICS codes 541612 Human Resources Consulting Services	$1,641	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $7.12 million obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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