Top 100 Railroad Retirement Board Contractors, FY2021

Name: Top 100 Railroad Retirement Board Contractors, FY2021
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Agency page on GovTribe

The top 10 won 77% of FY2021 Railroad Retirement Board contract dollars

Contract obligations: $56,772,258 Net of deobligations, by the Railroad Retirement Board and its offices
Contractors: 116 Parent companies with an obligation
Largest contractor: Blue Cross & Blue Shield of South Carolina $19.4 million, 33.7% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Blue Cross & Blue Shield of South Carolina Through Palmetto Gba, LLC Top NAICS codes 923120 Administration of Public Health Programs	$19,436,341	33.7%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and not on the FY2025 list; up 30 since FY2020.
2	International Business Machines Corporation Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$11,334,655	19.7%	Rank history: #2 in FY2022, #2 in FY2023, #2 in FY2024 and #8 in FY2025; up 30 since FY2020.
3	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$3,309,893	5.7%	Rank history: #7 in FY2022, #4 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
4	Lumen Technologies, Inc. 2 awardees, including Lumen Technologies Government Solutions, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$2,902,409	5.0%	Rank history: #3 in FY2022, #9 in FY2023, #15 in FY2024 and not on the FY2025 list; up 17 since FY2020.
5	Insight Public Sector Inc. 2 awardees Top NAICS codes 541519 Other Computer Related Services	$1,716,372	3.0%	Rank history: #5 in FY2022, #5 in FY2023, #6 in FY2024 and #41 in FY2025; up 1 since FY2020.
6	Government Acquisitions LLC Top NAICS codes 541519 Other Computer Related Services	$1,473,437	2.6%	Rank history: not on the FY2022 list, #25 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
7	Truetandem, LLC Top NAICS codes 313311 Broadwoven Fabric Finishing Mills	$1,287,525	2.2%	Rank history: #8 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
8	At&T Inc. 5 awardees, including At&T Enterprises, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$1,203,430	2.1%	Rank history: #6 in FY2022, #10 in FY2023, #8 in FY2024 and #16 in FY2025; up 4 since FY2020.
9	Colossal Contracting LLC Top NAICS codes 541519 Other Computer Related Services	$828,715	1.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
10	RMA Associates LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$769,663	1.3%	Rank history: #4 in FY2022, #6 in FY2023, #7 in FY2024 and not on the FY2025 list; up 27 since FY2020.
11	CMC & Maintenance Inc. Top NAICS codes 561720 Janitorial Services	$759,840	1.3%	Rank history: #17 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
12	Wilson 5 Service Company, Inc. Top NAICS codes 561210 Facilities Support Services	$670,649	1.2%	Rank history: #12 in FY2022, #15 in FY2023, #4 in FY2024 and #11 in FY2025; down 4 since FY2020.
13	Gartner, Inc. Top NAICS codes 519120 Libraries and Archives 519190 All Other Information Services	$659,750	1.1%	Rank history: #26 in FY2022, #21 in FY2023, #35 in FY2024 and not on the FY2025 list; up 2 since FY2020.
14	Akytech Consulting, LLC Top NAICS codes 541511 Custom Computer Programming Services	$627,769	1.1%	Rank history: #9 in FY2022 and not on the FY2023–FY2025 lists; down 9 since FY2020.
15	Verizon Communications Inc. 3 awardees, including Cellco Partnership and Verizon Pennsylvania LLC Top NAICS codes 541519 Other Computer Related Services 517312 Wireless Telecommunications Carriers (except Satellite) 561421 Telephone Answering Services	$573,983	1.0%	Rank history: #14 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; up 75 since FY2020.
16	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$567,823	1.0%	Rank history: #11 in FY2022, #12 in FY2023, #32 in FY2024 and #77 in FY2025; down 5 since FY2020.
17	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$435,473	0.8%	Rank history: #48 in FY2022, #51 in FY2023, #18 in FY2024 and #31 in FY2025; up 6 since FY2020.
18	Edify Technologies Inc. Top NAICS codes 541519 Other Computer Related Services	$431,057	0.7%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
19	Fcn, Inc. Top NAICS codes 541519 Other Computer Related Services	$425,864	0.7%	Rank history: #18 in FY2022, #17 in FY2023, #14 in FY2024 and #14 in FY2025; down 2 since FY2020.
20	Pitney Bowes Inc. Top NAICS codes 333298 All Other Industrial Machinery Manufacturing	$422,291	0.7%	Rank history: #25 in FY2022, #20 in FY2023, #12 in FY2024 and #13 in FY2025; down 6 since FY2020.
21	Reliasource, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$399,173	0.7%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
22	Quality Associates Inc. Through Konica Minolta Business Solutions U.s.a, Inc. Top NAICS codes 333316 Photographic and Photocopying Equipment Manufacturing 333315 Photographic and Photocopying Equipment Manufacturing	$393,807	0.7%	Rank history: #20 in FY2022, #23 in FY2023, #17 in FY2024 and not on the FY2025 list; up 123 since FY2020.
23	Manhattan Telecommunications Corporation LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$318,133	0.6%	Rank history: #90 in FY2022, not on the FY2023 list, #13 in FY2024 and #20 in FY2025; new, not ranked in FY2020.
24	Kearney & Company, P.C. Top NAICS codes 541618 Other Management Consulting Services	$304,561	0.5%	Rank history: #21 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
25	Exelon Corporation 4 awardees, including Constellation Newenergy, Inc., Commonwealth Edison Co and Constellation Newenergy - Gas Division, LLC Top NAICS codes 221112 Fossil Fuel Electric Power Generation 221122 Electric Power Distribution 211111 Crude Petroleum and Natural Gas Extraction	$297,170	0.5%	Rank history: #40 in FY2022, #55 in FY2023, #36 in FY2024 and not on the FY2025 list; up 19 since FY2020.
26	ATP Gov, LLC Top NAICS codes 541519 Other Computer Related Services	$290,915	0.5%	Rank history: #13 in FY2022, #34 in FY2023, #62 in FY2024 and #45 in FY2025; up 8 since FY2020.
27	Guroo LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$276,961	0.5%	Rank history: #16 in FY2022, #18 in FY2023, #30 in FY2024 and #33 in FY2025; unchanged since FY2020.
28	Westwind Computer Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$257,022	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
29	Bullock Logan & Associates Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$242,470	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
30	Air Comfort, LLC Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$214,677	0.4%	Rank history: not on the FY2022–FY2024 lists and #47 in FY2025; up 52 since FY2020.
31	Accelera Solutions Inc. Top NAICS codes 541519 Other Computer Related Services	$209,718	0.4%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
32	Cornerstone Ondemand, Inc. Top NAICS codes 611420 Computer Training	$201,938	0.4%	Rank history: #32 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
33	TOS Global LLC Top NAICS codes 511210 Software Publishers	$199,994	0.3%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
34	Altomonte Advisory Group, LLC Top NAICS codes 561611 Investigation and Personal Background Check Services	$199,680	0.3%	Rank history: #94 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
35	CA Inc. Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$195,215	0.3%	Rank history: #27 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
36	Sentinel Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$166,259	0.3%	Rank history: #36 in FY2022, #27 in FY2023, #33 in FY2024 and #26 in FY2025; up 4 since FY2020.
37	Integration Technologies Group, Inc. Top NAICS codes 541519 Other Computer Related Services	$160,248	0.3%	Rank history: #54 in FY2022, #47 in FY2023, #43 in FY2024 and #35 in FY2025; up 12 since FY2020.
38	Metgreen Solutions Inc. Top NAICS codes 541519 Other Computer Related Services	$143,412	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	TM3 Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$143,000	0.2%	Rank history: #41 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
40	Arrow Electronics, Inc. 2 awardees, including Immixtechnology Inc. and EC America, Inc. Top NAICS codes 541519 Other Computer Related Services 443120 Computer and Software Stores	$132,073	0.2%	Rank history: #81 in FY2022, #74 in FY2023, #77 in FY2024 and not on the FY2025 list; up 70 since FY2020.
41	Agileana Digital Services Inc. Top NAICS codes 541511 Custom Computer Programming Services	$117,867	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
42	Granite Telecommunications, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$110,273	0.2%	Rank history: #49 in FY2022, #39 in FY2023, #39 in FY2024 and #36 in FY2025; up 24 since FY2020.
43	MJL Enterprises, LLC Top NAICS codes 339940 Office Supplies (except Paper) Manufacturing	$108,669	0.2%	Rank history: #34 in FY2022, #29 in FY2023, #41 in FY2024 and #40 in FY2025; down 5 since FY2020.
44	Four LLC Top NAICS codes 541519 Other Computer Related Services	$108,319	0.2%	Rank history: #63 in FY2022, #84 in FY2023, #46 in FY2024 and not on the FY2025 list; up 4 since FY2020.
45	Kone Inc. Top NAICS codes 238290 Other Building Equipment Contractors	$93,351	0.2%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
46	Executive Information Systems, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$82,313	0.1%	Rank history: #57 in FY2022, #48 in FY2023, #45 in FY2024 and #42 in FY2025; up 7 since FY2020.
47	Southeastern Industrial Linings Inc. Top NAICS codes 238160 Roofing Contractors	$77,675	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	Caduceus Inc. Top NAICS codes 561320 Temporary Help Services	$77,303	0.1%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; up 51 since FY2020.
49	CMA Technology Inc. Top NAICS codes 541519 Other Computer Related Services	$65,938	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
50	Datacard Corporation Through Entrust, Inc. Top NAICS codes 541519 Other Computer Related Services	$65,793	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	Unified Business Solutions LLC Top NAICS codes 561990 All Other Support Services	$64,173	0.1%	Rank history: #62 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
52	The Segal Group Inc Top NAICS codes 541618 Other Management Consulting Services	$62,688	0.1%	Rank history: #70 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
53	Equifax Inc. Through Equifax Workforce Solutions LLC Top NAICS codes 561611 Investigation and Personal Background Check Services	$60,000	0.1%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; up 21 since FY2020.
54	Wolters Kluwer N.V. Through Wolters Kluwer Financial Services, Inc. Top NAICS codes 519190 All Other Information Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$59,618	0.1%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
55	Diligent Canada Inc. Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers 519190 All Other Information Services	$59,290	0.1%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; up 21 since FY2020.
56	DH Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$58,432	0.1%	Rank history: #76 in FY2022, not on the FY2023 list, #27 in FY2024 and #27 in FY2025; up 5 since FY2020.
57	Alliance for Children and Families Inc. Through FEI Behavioral Health, Inc. Top NAICS codes 624190 Other Individual and Family Services	$56,541	0.1%	Rank history: #93 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
58	Carolina Advanced Digital, Inc. Top NAICS codes 541519 Other Computer Related Services	$56,393	0.1%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
59	Software Information Resource Corp. Top NAICS codes 541519 Other Computer Related Services	$56,346	0.1%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; down 13 since FY2020.
60	Kpaul Properties LLC Top NAICS codes 541519 Other Computer Related Services	$47,783	0.1%	Rank history: #65 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
61	Therm Flo, Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$44,975	0.1%	Rank history: #71 in FY2022, #61 in FY2023, #59 in FY2024 and #52 in FY2025; up 6 since FY2020.
62	Vanguard Integrity Professionals Inc. Top NAICS codes 511210 Software Publishers	$43,906	0.1%	Rank history: #72 in FY2022, #59 in FY2023, #60 in FY2024 and #51 in FY2025; up 16 since FY2020.
63	Epoch Concepts LLC Top NAICS codes 541519 Other Computer Related Services	$43,489	0.1%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
64	Wisconsin Electric Through The Peoples Gas Lght & Coke Co Top NAICS codes 221210 Natural Gas Distribution	$41,709	0.1%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
65	Levi Ray & Shoup Inc. Top NAICS codes 511210 Software Publishers	$41,595	0.1%	Rank history: #74 in FY2022, #63 in FY2023, #61 in FY2024 and #53 in FY2025; up 6 since FY2020.
66	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$39,802	0.1%	Rank history: not on the FY2022–FY2025 lists; up 53 since FY2020.
67	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services	$39,320	0.1%	Rank history: #98 in FY2022, not on the FY2023 list, #90 in FY2024 and not on the FY2025 list; down 7 since FY2020.
68	ACE Info Solutions LLC Through Guidehouse Digital LLC Top NAICS codes 541519 Other Computer Related Services	$36,403	0.1%	Rank history: not on the FY2022 list, #69 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
69	Sinclair Broadcast Group Inc. Through Politico, LLC Top NAICS codes 511110 Newspaper Publishers	$30,950	0.1%	Rank history: #82 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
70	Mythics, LLC Through Emergent, LLC Top NAICS codes 541519 Other Computer Related Services	$30,540	0.1%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
71	Chicago Soft, Ltd. Top NAICS codes 541519 Other Computer Related Services	$27,921	<0.1%	Rank history: #88 in FY2022, #85 in FY2023, #70 in FY2024 and #63 in FY2025; up 56 since FY2020.
72	4 Star Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$27,700	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
73	Republic Services Inc. Through Allied Waste Transportation Inc. Top NAICS codes 562111 Solid Waste Collection	$24,999	<0.1%	Rank history: not on the FY2022 list, #72 in FY2023, #64 in FY2024 and #59 in FY2025; up 57 since FY2020.
74	Juncture Consulting, LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists)	$24,625	<0.1%	Rank history: #85 in FY2022, #91 in FY2023, #72 in FY2024 and #61 in FY2025; up 21 since FY2020.
75	Esscoe LLC Top NAICS codes 541519 Other Computer Related Services	$24,336	<0.1%	Rank history: #86 in FY2022, #65 in FY2023, #73 in FY2024 and #28 in FY2025; new, not ranked in FY2020.
76	Anacapa Micro Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$23,994	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 40 since FY2020.
77	Techanax LLC Top NAICS codes 541519 Other Computer Related Services	$22,937	<0.1%	Rank history: #89 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
78	Fedex Corp 2 awardees, including Federal Express Corporation Top NAICS codes 492110 Couriers and Express Delivery Services	$22,568	<0.1%	Rank history: #69 in FY2022, #54 in FY2023, #55 in FY2024 and #55 in FY2025; down 16 since FY2020.
79	Accessagility LLC Top NAICS codes 541519 Other Computer Related Services	$21,341	<0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
80	MGA Partners LLC Top NAICS codes 541310 Architectural Services	$20,809	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	Transource Services Corp. Top NAICS codes 334111 Electronic Computer Manufacturing	$20,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 27 since FY2020.
82	GIL General & Electrical Contractors Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$19,860	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Zion Cloud Solutions LLC Top NAICS codes 541512 Computer Systems Design Services	$19,277	<0.1%	Rank history: #23 in FY2022, #8 in FY2023 and not on the FY2024–FY2025 lists; down 58 since FY2020.
84	Glenkirk Top NAICS codes 561990 All Other Support Services	$17,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
85	V3Gate, LLC Top NAICS codes 541519 Other Computer Related Services	$16,284	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	HP Enterprise Services LLC Through Onsolve LLC Top NAICS codes 541519 Other Computer Related Services	$14,116	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 34 since FY2020.
87	LRP Publications, Inc. Top NAICS codes 541519 Other Computer Related Services	$13,440	<0.1%	Rank history: not on the FY2022–FY2023 lists, #84 in FY2024 and #80 in FY2025; up 27 since FY2020.
88	Victor Envelope Company Top NAICS codes 322230 Stationery Product Manufacturing	$13,166	<0.1%	Rank history: #56 in FY2022, #60 in FY2023, #86 in FY2024 and #65 in FY2025; down 11 since FY2020.
89	Optimum Software Solutions Inc. Top NAICS codes 541511 Custom Computer Programming Services	$13,067	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 79 since FY2020.
90	City of Chicago Top NAICS codes 221310 Water Supply and Irrigation Systems	$12,973	<0.1%	Rank history: #83 in FY2022, #92 in FY2023, #71 in FY2024 and not on the FY2025 list; up 4 since FY2020.
91	Thomson Reuters (Tax & Accounting) Inc. Through West Publishing Corporation Top NAICS codes 511140 Directory and Mailing List Publishers	$12,111	<0.1%	Rank history: #60 in FY2022, #98 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
92	Advanced Computer Concepts, Inc. Top NAICS codes 541519 Other Computer Related Services	$12,097	<0.1%	Rank history: #35 in FY2022, not on the FY2023 list, #58 in FY2024 and not on the FY2025 list; down 40 since FY2020.
93	MDI Access Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$12,000	<0.1%	Rank history: not on the FY2022–FY2023 lists, #57 in FY2024 and not on the FY2025 list; up 22 since FY2020.
94	Veterans Command, LLC Top NAICS codes 561410 Document Preparation Services	$12,000	<0.1%	Rank history: not on the FY2022 list, #94 in FY2023, #85 in FY2024 and #60 in FY2025; new, not ranked in FY2020.
95	Constellation Newenergy - Gas Division, LLC Top NAICS codes 211111 Crude Petroleum and Natural Gas Extraction	$11,900	<0.1%	Rank history: not on the FY2022 list, #42 in FY2023, not on the FY2024 list and #29 in FY2025; down 16 since FY2020.
96	Federal Express Corporation Top NAICS codes 492110 Couriers and Express Delivery Services	$11,500	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
97	Hornady Manufacturing Company Top NAICS codes 332992 Small Arms Ammunition Manufacturing	$11,106	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 52 since FY2020.
98	Information Mapping Inc. Top NAICS codes 511210 Software Publishers	$10,826	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Data Base Architects, Inc. Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$10,821	<0.1%	Rank history: not on the FY2022–FY2023 lists, #87 in FY2024 and #81 in FY2025; up 19 since FY2020.
100	William S. Hein & Co., Inc. Top NAICS codes 511110 Newspaper Publishers	$10,815	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

Show 75 more

100 of 116 contractors listed here. See the rest on GovTribe.

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 $57.7 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.

Quick answers

Who were the top 10 Railroad Retirement Board contractors in FY2021?

1. Blue Cross & Blue Shield of South Carolina ($19.4M), 2. International Business Machines Corporation ($11.3M), 3. CGI Technologies and Solutions Inc. ($3.31M), 4. Lumen Technologies, Inc. ($2.9M), 5. Insight Public Sector Inc. ($1.72M), 6. Government Acquisitions LLC ($1.47M), 7. Truetandem, LLC ($1.29M), 8. At&T Inc. ($1.2M), 9. Colossal Contracting LLC ($829K), 10. RMA Associates LLC ($770K).

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