Top 100 Pension Benefit Guaranty Corporation Contractors, FY2021

Name: Top 100 Pension Benefit Guaranty Corporation 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 47% of FY2021 Pension Benefit Guaranty Corporation contract dollars

Contract obligations: $378,819,014 Net of deobligations, by the Pension Benefit Guaranty Corporation and its offices
Contractors: 203 Parent companies with an obligation
Largest contractor: Deloitte LLP $37.3 million, 9.0% 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	Deloitte LLP 3 awardees, including Deloitte & Touche LLP, Deloitte Consulting LLP and Deloitte Financial Advisory Services LLP Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$37,349,395	9.0%	Rank history: #4 in FY2022, #4 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
2	Serco North America (Holdings) Inc Through Serco Inc. Top NAICS codes 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds	$36,962,835	8.9%	Rank history: #1 in FY2022, #2 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
3	Science Applications International Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$27,560,984	6.6%	Rank history: #2 in FY2022, #1 in FY2023, #3 in FY2024 and #2 in FY2025; up 44 since FY2020.
4	Advanced Technology Systems Inc. 2 awardees, including Salient Crgt, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$18,364,174	4.4%	Rank history: #68 in FY2022, #3 in FY2023, #9 in FY2024 and not on the FY2025 list; unchanged since FY2020.
5	Nana Regional Corporation Inc Through Talu LLC Top NAICS codes 337215 Showcase, Partition, Shelving, and Locker Manufacturing	$15,452,431	3.7%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 54 since FY2020.
6	Wellington Management Group LLP Through Wellington Management Company LLP Top NAICS codes 523920 Portfolio Management 523110 Investment Banking and Securities Dealing	$14,186,140	3.4%	Rank history: #9 in FY2022, #8 in FY2023, #5 in FY2024 and not on the FY2025 list; up 8 since FY2020.
7	State Street Corporation Top NAICS codes 541214 Payroll Services 523991 Trust, Fiduciary, and Custody Activities	$13,197,064	3.2%	Rank history: #5 in FY2022, #7 in FY2023, #4 in FY2024 and #6 in FY2025; down 2 since FY2020.
8	Prudential Financial Inc. Through Pgim, Inc. Top NAICS codes 523920 Portfolio Management	$11,908,613	2.9%	Rank history: #11 in FY2022, #10 in FY2023, #7 in FY2024 and #14 in FY2025; down 2 since FY2020.
9	Pacific Investment Management Company LLC Top NAICS codes 523920 Portfolio Management	$11,639,653	2.8%	Rank history: #8 in FY2022, #9 in FY2023, #13 in FY2024 and not on the FY2025 list; down 2 since FY2020.
10	Grant Thornton International Ltd 2 awardees, including Grant Thornton LLP and Grant Thornton Public Sector LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$9,518,996	2.3%	Rank history: #15 in FY2022, #11 in FY2023, #67 in FY2024 and not on the FY2025 list; unchanged since FY2020.
11	Nisa Investment Advisors LLC Top NAICS codes 523110 Investment Banking and Securities Dealing	$9,399,968	2.3%	Rank history: #12 in FY2022, #6 in FY2023, #6 in FY2024 and #12 in FY2025; down 3 since FY2020.
12	Marathon Asset Management LLP Top NAICS codes 523920 Portfolio Management	$8,032,448	1.9%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
13	Arrowstreet Capital LP Top NAICS codes 523920 Portfolio Management	$7,205,963	1.7%	Rank history: #17 in FY2022, #15 in FY2023, #16 in FY2024 and #13 in FY2025; up 8 since FY2020.
14	Investec Asset Management North America Inc. 2 awardees, including Ninety One North America, Inc. and Invesco Trust Company Top NAICS codes 523920 Portfolio Management	$6,664,147	1.6%	Rank history: #21 in FY2022, #25 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
15	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$5,894,202	1.4%	Rank history: #18 in FY2022, #13 in FY2023, #31 in FY2024 and not on the FY2025 list; up 18 since FY2020.
16	TCW Asset Management Company LLC Top NAICS codes 523920 Portfolio Management	$5,879,190	1.4%	Rank history: #26 in FY2022, #22 in FY2023, #21 in FY2024 and not on the FY2025 list; up 147 since FY2020.
17	Chickasaw Health Consulting, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541611 Administrative Management and General Management Consulting Services	$5,281,113	1.3%	Rank history: #38 in FY2022, not on the FY2023 list, #62 in FY2024 and not on the FY2025 list; up 13 since FY2020.
18	Bolton Partners, Inc. 2 awardees, including Bolton Partners D.c., Inc. Top NAICS codes 541612 Human Resources Consulting Services 541611 Administrative Management and General Management Consulting Services	$5,264,480	1.3%	Rank history: #16 in FY2022, #14 in FY2023, #15 in FY2024 and #10 in FY2025; down 6 since FY2020.
19	Franklin Resources Inc. Through Western Asset Management Co, LLC Top NAICS codes 523920 Portfolio Management	$4,958,000	1.2%	Rank history: #20 in FY2022, #16 in FY2023, #17 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
20	Accenture Federal Services LLC Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$4,942,726	1.2%	Rank history: not on the FY2022–FY2025 lists; up 85 since FY2020.
21	AQR Capital Management LLC Top NAICS codes 523920 Portfolio Management	$4,827,396	1.2%	Rank history: #24 in FY2022, not on the FY2023–FY2024 lists and #51 in FY2025; up 7 since FY2020.
22	Dell Federal Systems L.P. Top NAICS codes 541519 Other Computer Related Services	$4,679,097	1.1%	Rank history: #28 in FY2022, #18 in FY2023, #35 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
23	Neuberger Berman Investment Advisers LLC Top NAICS codes 523920 Portfolio Management	$4,123,565	1.0%	Rank history: #34 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; up 150 since FY2020.
24	Schroder Investment Management North America Inc. Top NAICS codes 523920 Portfolio Management	$3,849,172	0.9%	Rank history: #27 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
25	LOS Angeles Capital Management LLC Top NAICS codes 523920 Portfolio Management	$3,821,124	0.9%	Rank history: #40 in FY2022, #27 in FY2023, not on the FY2024 list and #48 in FY2025; up 4 since FY2020.
26	Blackrock Inc. 2 awardees, including Blackrock Financial Management Inc. and Blackrock Institutional Trust Company National Association Top NAICS codes 541519 Other Computer Related Services 523930 Investment Advice 523920 Portfolio Management	$3,623,142	0.9%	Rank history: #33 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; up 31 since FY2020.
27	CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$3,459,298	0.8%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
28	Lumen Technologies, Inc. 3 awardees, including Lumen Technologies Government Solutions, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$3,255,714	0.8%	Rank history: #100 in FY2022, #73 in FY2023, #32 in FY2024 and #28 in FY2025; down 11 since FY2020.
29	Baillie Gifford & Co Through Baillie Gifford Overseas Limited Top NAICS codes 523920 Portfolio Management	$3,173,095	0.8%	Rank history: #47 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
30	Principal Real Estate Investors LLC Top NAICS codes 523920 Portfolio Management	$3,106,197	0.7%	Rank history: #29 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
31	Perella Weinberg Partners LP Top NAICS codes 523930 Investment Advice	$3,000,000	0.7%	Rank history: #45 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
32	BAE Systems PLC Through BAE Systems Technology Solutions & Services Inc. Top NAICS codes 541219 Other Accounting Services	$2,994,610	0.7%	Rank history: #35 in FY2022, #26 in FY2023, #22 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
33	Wells Fargo & Company Through Allspring Global Investments, LLC Top NAICS codes 523920 Portfolio Management	$2,990,962	0.7%	Rank history: #23 in FY2022, #19 in FY2023, #19 in FY2024 and not on the FY2025 list; up 6 since FY2020.
34	Milliman, Inc. Top NAICS codes 541612 Human Resources Consulting Services	$2,873,597	0.7%	Rank history: #84 in FY2022, #24 in FY2023, #10 in FY2024 and #7 in FY2025; down 14 since FY2020.
35	Conduent Federal Solutions LLC Through Buck Global LLC Top NAICS codes 541612 Human Resources Consulting Services 541611 Administrative Management and General Management Consulting Services	$2,826,535	0.7%	Rank history: #22 in FY2022, #23 in FY2023, #87 in FY2024 and not on the FY2025 list; up 14 since FY2020.
36	Towers Watson Delaware Inc. Through Willis Towers Watson US LLC Top NAICS codes 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds	$2,800,000	0.7%	Rank history: #66 in FY2022, not on the FY2023 list, #97 in FY2024 and not on the FY2025 list; down 14 since FY2020.
37	Ernst & Young LLP Top NAICS codes 541211 Offices of Certified Public Accountants	$2,791,306	0.7%	Rank history: #50 in FY2022, not on the FY2023 list, #27 in FY2024 and not on the FY2025 list; up 11 since FY2020.
38	Arrowpoint Technologies Inc. Through Lynchval Systems Worldwide, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,782,163	0.7%	Rank history: #42 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
39	Nuveen Asset Management, LLC Top NAICS codes 523920 Portfolio Management	$2,609,454	0.6%	Rank history: #30 in FY2022, #42 in FY2023, not on the FY2024 list and #32 in FY2025; up 11 since FY2020.
40	Talatek, LLC Top NAICS codes 541519 Other Computer Related Services	$2,533,227	0.6%	Rank history: not on the FY2022–FY2025 lists; down 16 since FY2020.
41	Fcn, Inc. Top NAICS codes 541519 Other Computer Related Services	$2,299,644	0.6%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; up 27 since FY2020.
42	Colchester Global Investors Limited Top NAICS codes 523110 Investment Banking and Securities Dealing	$2,270,449	0.5%	Rank history: #37 in FY2022, #35 in FY2023, #23 in FY2024 and not on the FY2025 list; up 2 since FY2020.
43	Virtus Investment Partners, Inc. Through Duff & Phelps Investment Management Co Top NAICS codes 523920 Portfolio Management	$2,183,106	0.5%	Rank history: #32 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
44	Mythics, LLC 2 awardees, including Emergent, LLC Top NAICS codes 541519 Other Computer Related Services	$2,120,553	0.5%	Rank history: not on the FY2022 list, #38 in FY2023 and not on the FY2024–FY2025 lists; up 155 since FY2020.
45	Pioneer Corporate Services, Inc. Top NAICS codes 541512 Computer Systems Design Services	$2,084,297	0.5%	Rank history: #44 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
46	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$1,979,435	0.5%	Rank history: #39 in FY2022, #37 in FY2023, #24 in FY2024 and #39 in FY2025; up 8 since FY2020.
47	The Goldman Sachs Group Inc Through Goldman Sachs Asset Management, L.P Top NAICS codes 523920 Portfolio Management	$1,729,006	0.4%	Rank history: #19 in FY2022, #20 in FY2023, #34 in FY2024 and not on the FY2025 list; up 24 since FY2020.
48	Kpmg L.L.P. 2 awardees Top NAICS codes 541211 Offices of Certified Public Accountants	$1,710,234	0.4%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
49	Jefferson Consulting Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,443,210	0.3%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
50	Chainbridge Solutions Incorporated Top NAICS codes 541512 Computer Systems Design Services 561210 Facilities Support Services	$1,360,494	0.3%	Rank history: #53 in FY2022, #48 in FY2023, #47 in FY2024 and #60 in FY2025; up 41 since FY2020.
51	The Bank of New York Mellon Corporation Through Eagle Investment Systems LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$1,351,050	0.3%	Rank history: #54 in FY2022, #43 in FY2023, #41 in FY2024 and not on the FY2025 list; up 12 since FY2020.
52	Brmi Holdings Corporation Through Brmi Corporation Top NAICS codes 541511 Custom Computer Programming Services	$1,336,343	0.3%	Rank history: #52 in FY2022, #55 in FY2023, #65 in FY2024 and not on the FY2025 list; up 6 since FY2020.
53	Lunarline, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,329,373	0.3%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
54	Softconcept, Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,256,637	0.3%	Rank history: #76 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
55	Castro & Company, LLC Top NAICS codes 541219 Other Accounting Services	$1,144,610	0.3%	Rank history: #59 in FY2022, #58 in FY2023, #55 in FY2024 and #37 in FY2025; up 9 since FY2020.
56	Four LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$1,051,042	0.3%	Rank history: #73 in FY2022, #62 in FY2023, #53 in FY2024 and #65 in FY2025; up 28 since FY2020.
57	Bloomberg LP 3 awardees, including Bloomberg Industry Group, Inc. and Bloomberg Finance LP Top NAICS codes 511130 Book Publishers 519130 Internet Publishing and Broadcasting and Web Search Portals 541990 All Other Professional, Scientific, and Technical Services	$1,025,651	0.2%	Rank history: #85 in FY2022, #63 in FY2023, #48 in FY2024 and #44 in FY2025; up 22 since FY2020.
58	Spectrum International, Incorporated Top NAICS codes 523991 Trust, Fiduciary, and Custody Activities	$1,014,451	0.2%	Rank history: #61 in FY2022, #50 in FY2023, #37 in FY2024 and #49 in FY2025; up 14 since FY2020.
59	Wellington Management Company LLP Top NAICS codes 523920 Portfolio Management	$1,000,000	0.2%	Rank history: not on the FY2022–FY2024 lists and #9 in FY2025; down 48 since FY2020.
60	Marsh & Mclennan Companies Inc. 2 awardees, including Mercer Investments LLC Top NAICS codes 523930 Investment Advice	$915,631	0.2%	Rank history: #51 in FY2022, #49 in FY2023, not on the FY2024 list and #43 in FY2025; up 107 since FY2020.
61	MFS Institutional Advisors Inc Top NAICS codes 523110 Investment Banking and Securities Dealing	$862,035	0.2%	Rank history: #56 in FY2022, #53 in FY2023, #45 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
62	VG Systems LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$847,556	0.2%	Rank history: #65 in FY2022, #56 in FY2023, #30 in FY2024 and #33 in FY2025; up 4 since FY2020.
63	Thomson Reuters (Tax & Accounting) Inc. 3 awardees, including West Publishing Corporation and Thomson Reuters (Markets) LLC Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$806,564	0.2%	Rank history: #55 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; up 64 since FY2020.
64	Eagle Health, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$771,360	0.2%	Rank history: #69 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
65	Mcgraw Hill Financial Inc. 3 awardees, including Standard & Poor's Financial Services LLC, Capital IQ, Inc. and S&P Global Market Intelligence LLC Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals 511120 Periodical Publishers	$763,515	0.2%	Rank history: #70 in FY2022, #57 in FY2023, #88 in FY2024 and #54 in FY2025; up 23 since FY2020.
66	Seventh Sense, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$752,431	0.2%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
67	International Business Machines Corporation Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services	$752,317	0.2%	Rank history: not on the FY2022 list, #82 in FY2023, #72 in FY2024 and not on the FY2025 list; up 9 since FY2020.
68	Creative Business Solutions, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$738,741	0.2%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
69	Arrow Electronics, Inc. 2 awardees, including Immixtechnology Inc. Top NAICS codes 541519 Other Computer Related Services	$700,524	0.2%	Rank history: not on the FY2022 list, #67 in FY2023, #63 in FY2024 and #64 in FY2025; new, not ranked in FY2020.
70	Pac Solutions LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$697,174	0.2%	Rank history: #71 in FY2022, not on the FY2023 list, #60 in FY2024 and #99 in FY2025; up 5 since FY2020.
71	The Aleut Corporation Through Aleut Construction LLC Top NAICS codes 561210 Facilities Support Services	$658,707	0.2%	Rank history: not on the FY2022–FY2025 lists; up 16 since FY2020.
72	Locke Lord LLP Top NAICS codes 922130 Legal Counsel and Prosecution	$608,320	0.1%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
73	Cameo Consulting Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$607,679	0.1%	Rank history: #57 in FY2022, #65 in FY2023, #86 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
74	The Northridge Group, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$542,969	0.1%	Rank history: #81 in FY2022, #76 in FY2023, #68 in FY2024 and #80 in FY2025; up 20 since FY2020.
75	Saliense Consulting LLC Top NAICS codes 541511 Custom Computer Programming Services	$539,944	0.1%	Rank history: #78 in FY2022, not on the FY2023–FY2024 lists and #75 in FY2025; new, not ranked in FY2020.
76	Disys Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$501,014	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Stifel Nicolaus & Company Incorporated Top NAICS codes 523930 Investment Advice	$500,000	0.1%	Rank history: not on the FY2022–FY2025 lists; down 46 since FY2020.
78	General Motors Company 2 awardees, including Performance Equity Management, LLC and General Motors Investment Management Corp Top NAICS codes 523110 Investment Banking and Securities Dealing	$486,419	0.1%	Rank history: #77 in FY2022, #52 in FY2023, #51 in FY2024 and #45 in FY2025; up 55 since FY2020.
79	At&T Inc. 4 awardees, including Att Mobility LLC and At&T Enterprises, LLC Top NAICS codes 541519 Other Computer Related Services 517110 Wired Telecommunications Carriers	$408,328	0.1%	Rank history: #75 in FY2022, #71 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
80	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$404,800	0.1%	Rank history: #79 in FY2022, #77 in FY2023, #71 in FY2024 and #70 in FY2025; new, not ranked in FY2020.
81	Gartner, Inc. Top NAICS codes 541519 Other Computer Related Services	$379,842	0.1%	Rank history: #86 in FY2022, #79 in FY2023, #78 in FY2024 and not on the FY2025 list; up 34 since FY2020.
82	T. White Parker Associates, Incorporated Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$357,144	0.1%	Rank history: #64 in FY2022, #46 in FY2023, #40 in FY2024 and #62 in FY2025; up 27 since FY2020.
83	Man-Machine Systems Assessment (Msa), Incorporated Top NAICS codes 541330 Engineering Services	$349,933	0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 25 since FY2020.
84	AON Consulting Inc. Top NAICS codes 541612 Human Resources Consulting Services	$349,656	0.1%	Rank history: not on the FY2022–FY2025 lists; up 70 since FY2020.
85	Intact Technology Inc. Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services	$340,056	0.1%	Rank history: not on the FY2022–FY2025 lists; up 27 since FY2020.
86	The Clearing, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$336,585	0.1%	Rank history: #83 in FY2022, #78 in FY2023, #80 in FY2024 and not on the FY2025 list; up 24 since FY2020.
87	Aderas Inc. Top NAICS codes 541519 Other Computer Related Services	$319,045	0.1%	Rank history: #93 in FY2022, #84 in FY2023, #91 in FY2024 and #79 in FY2025; down 52 since FY2020.
88	Imperial Parking (U.S.) LLC Top NAICS codes 812930 Parking Lots and Garages	$302,905	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Reed Elsevier Inc. 2 awardees, including Relx Inc. and Portfolio Media Inc. Top NAICS codes 511120 Periodical Publishers 519130 Internet Publishing and Broadcasting and Web Search Portals	$280,607	0.1%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; up 56 since FY2020.
90	RGS Associates, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$275,741	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Siemens Aktiengesellschaft Through Siemens Industry Inc. Top NAICS codes 561210 Facilities Support Services	$252,615	0.1%	Rank history: #97 in FY2022 and not on the FY2023–FY2025 lists; up 53 since FY2020.
92	New Century Advisors LLC Top NAICS codes 523920 Portfolio Management	$247,107	0.1%	Rank history: #62 in FY2022, #51 in FY2023, #59 in FY2024 and #57 in FY2025; up 4 since FY2020.
93	Moody'S Corporation Through Moody's Analytics, Inc. Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$244,489	0.1%	Rank history: not on the FY2022 list, #89 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
94	Economic Systems Inc. Top NAICS codes 541612 Human Resources Consulting Services 511210 Software Publishers	$222,410	0.1%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
95	Williams, Adley & Company DC LLP Top NAICS codes 541211 Offices of Certified Public Accountants	$221,539	0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
96	Vtech Solution Inc. Top NAICS codes 541519 Other Computer Related Services	$219,346	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
97	Liberty Leadership Group, LLC Top NAICS codes 541612 Human Resources Consulting Services	$217,587	0.1%	Rank history: not on the FY2022 list, #95 in FY2023, #96 in FY2024 and not on the FY2025 list; up 25 since FY2020.
98	Manhattan Telecommunications Corporation LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$217,068	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Longfellow Investment Management Co., LLC Top NAICS codes 523920 Portfolio Management	$214,105	0.1%	Rank history: #63 in FY2022, #68 in FY2023, #64 in FY2024 and #59 in FY2025; down 2 since FY2020.
100	Ascendum Solutions LLC Through Fm:systems Group, LLC Top NAICS codes 611420 Computer Training	$211,490	0.1%	Rank history: not on the FY2022–FY2025 lists; up 48 since FY2020.

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100 of 203 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 $416 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 Pension Benefit Guaranty Corporation contractors in FY2021?

1. Deloitte LLP ($37.3M), 2. Serco North America (Holdings) Inc ($37M), 3. Science Applications International Corporation ($27.6M), 4. Advanced Technology Systems Inc. ($18.4M), 5. Nana Regional Corporation Inc ($15.5M), 6. Wellington Management Group LLP ($14.2M), 7. State Street Corporation ($13.2M), 8. Prudential Financial Inc. ($11.9M), 9. Pacific Investment Management Company LLC ($11.6M), 10. Grant Thornton International Ltd ($9.52M).

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