Top 100 Contractors in NAICS 23611: Residential Building Construction, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Hensel Phelps Construction Co Top agencies Army (Department of the Army)	$120,209,504	25.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
2	Global Pacific Design Builders, LLC Top agencies Navy (Department of the Navy)	$57,031,785	12.0%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; down 1 since Aug 2024–Jul 2025.
3	OBG Government Services GMBH & Co. KG Top agencies Army (Department of the Army)	$49,619,288	10.4%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; new, not ranked in Aug 2024–Jul 2025.
4	Gilbane Building Company Through Gilbane Japan GK Top agencies Army (Department of the Army)	$35,670,268	7.5%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; new, not ranked in Aug 2024–Jul 2025.
5	Ichiken Co Ltd Top agencies Army (Department of the Army)	$35,283,168	7.4%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; down 2 since Aug 2024–Jul 2025.
6	Hpm, Inc. Top agencies DOI (Department of the Interior)	$14,219,376	3.0%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023, #46 in FY2024 and #7 in FY2025; up 21 since Aug 2024–Jul 2025.
7	Pacific Rim Constructors Inc. Top agencies Navy (Department of the Navy)	$13,890,129	2.9%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #26 in FY2025; up 46 since Aug 2024–Jul 2025.
8	Core TECH International Corporation 2 awardees, including Core Tech-Hdcc-Kajima LLC Top agencies Navy (Department of the Navy)	$11,078,538	2.3%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023, #36 in FY2024 and #35 in FY2025; up 17 since Aug 2024–Jul 2025.
9	Orion Construction, Inc. Top agencies DHS (Department of Homeland Security)	$9,757,169	2.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
10	Desbuild Incorporated Top agencies DOS (Department of State)	$8,550,650	1.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
11	Orcom a Division of Ortega Companies Inc Top agencies DOI (Department of the Interior)	$8,123,178	1.7%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Aug 2024–Jul 2025.
12	King Construction Services Inc. Top agencies DOI (Department of the Interior)	$8,074,632	1.7%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #8 in FY2025; down 6 since Aug 2024–Jul 2025.
13	Core Tech-Hdcc-Kajima LLC Top agencies Navy (Department of the Navy)	$7,535,445	1.6%	Rank history: #1 in FY2021, not on the FY2022–FY2023 lists, #12 in FY2024 and #6 in FY2025; down 9 since Aug 2024–Jul 2025.
14	Fed Serve LLC Top agencies DHS (Department of Homeland Security)	$6,745,976	1.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
15	Lacreek Development Corp Top agencies HHS (Department of Health and Human Services)	$5,771,000	1.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023, #34 in FY2024 and not on the FY2025 list; up 16 since Aug 2024–Jul 2025.
16	Ashchar SRS Ltd Top agencies USAF (Department of the Air Force)	$5,000,000	1.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
17	Black Construction-Tutor Perini JV Top agencies Navy (Department of the Navy)	$4,312,166	0.9%	Rank history: #2 in FY2021, #2 in FY2022, #14 in FY2023, #11 in FY2024 and #16 in FY2025; down 3 since Aug 2024–Jul 2025.
18	National Contracting Services LLC Top agencies DOI (Department of the Interior)	$4,168,547	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
19	Metrolit Service Aktiebolag Top agencies DOS (Department of State)	$4,070,943	0.9%	Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; new, not ranked in Aug 2024–Jul 2025.
20	Benecorp Inc. Top agencies Navy (Department of the Navy)	$3,799,455	0.8%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Aug 2024–Jul 2025.
21	Constellis, LLC Through Centerra Integrated Services GMBH Top agencies Army (Department of the Army)	$3,323,149	0.7%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; new, not ranked in Aug 2024–Jul 2025.
22	Tutor Perini Corporation Through Black Construction-Tutor Perini JV Top agencies Navy (Department of the Navy)	$3,200,000	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
23	Hanwha Hotels & Resorts Top agencies Army (Department of the Army)	$2,484,393	0.5%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #13 in FY2025; down 5 since Aug 2024–Jul 2025.
24	Sealaska Constructors LLC Top agencies DOI (Department of the Interior)	$2,294,249	0.5%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Aug 2024–Jul 2025.
25	Messer Construction Co Top agencies Army (Department of the Army)	$2,093,400	0.4%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023, #21 in FY2024 and #11 in FY2025; down 16 since Aug 2024–Jul 2025.
26	Toyo Trust Tokki Co.,Ltd. Top agencies Navy (Department of the Navy)	$2,040,933	0.4%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; down 3 since Aug 2024–Jul 2025.
27	Integriward LLC Top agencies DHS (Department of Homeland Security)	$1,840,000	0.4%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, not on the FY2024 list and #20 in FY2025; new, not ranked in Aug 2024–Jul 2025.
28	Nan Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,692,184	0.4%	Rank history: #11 in FY2021, #5 in FY2022, #16 in FY2023, #19 in FY2024 and #17 in FY2025; up 2 since Aug 2024–Jul 2025.
29	ICM S.P.a. Top agencies Army (Department of the Army)	$1,682,847	0.4%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #34 in FY2025; up 15 since Aug 2024–Jul 2025.
30	Global Systemized Industry Top agencies Army (Department of the Army)	$1,595,813	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
31	Veritas Facility Services and Construction, Inc. Top agencies USDA (Department of Agriculture)	$1,306,920	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
32	Italiana Costruzioni - Societa' Per Azioni Top agencies Army (Department of the Army)	$1,078,189	0.2%	Rank history: not on the FY2021 list, #3 in FY2022, #5 in FY2023, #16 in FY2024 and not on the FY2025 list; up 5 since Aug 2024–Jul 2025.
33	Sanvinet Cornejo JV Inc. Top agencies DOI (Department of the Interior)	$765,342	0.2%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #27 in FY2025; up 74 since Aug 2024–Jul 2025.
34	Bundesrepublik Deutschland Top agencies Army (Department of the Army)	$765,252	0.2%	Rank history: not on the FY2021 list, #10 in FY2022, not on the FY2023 list, #9 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
35	Talabishka S.r.o. Top agencies DOS (Department of State)	$744,284	0.2%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; up 61 since Aug 2024–Jul 2025.
36	The Durable Slate Co Top agencies DOS (Department of State)	$738,037	0.2%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and not on the FY2025 list; up 22 since Aug 2024–Jul 2025.
37	Peter's Home Renovation Inc. Top agencies USDA (Department of Agriculture)	$669,157	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
38	Plug In Utility Services Corp Top agencies DHS (Department of Homeland Security)	$586,739	0.1%	Rank history: #10 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
39	Himalayan Builders and Engineers Pvt. Ltd Top agencies DOS (Department of State)	$559,631	0.1%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and #42 in FY2025; down 32 since Aug 2024–Jul 2025.
40	Primecorps LLC Top agencies DOI (Department of the Interior)	$549,428	0.1%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; new, not ranked in Aug 2024–Jul 2025.
41	Dominguez Design-Build, Inc. Top agencies DOI (Department of the Interior)	$527,955	0.1%	Rank history: #51 in FY2021, #34 in FY2022, not on the FY2023–FY2024 lists and #36 in FY2025; new, not ranked in Aug 2024–Jul 2025.
42	Robertson Welding & Construction LLC Top agencies USDA (Department of Agriculture)	$518,102	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
43	Blackhawk Contracting, LLC Top agencies DOI (Department of the Interior)	$465,423	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
44	358 Investments, LLC Top agencies USDA (Department of Agriculture)	$419,358	0.1%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and not on the FY2025 list; up 92 since Aug 2024–Jul 2025.
45	Trautman’s Painting, L.L.C. Top agencies DOI (Department of the Interior)	$396,350	0.1%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; new, not ranked in Aug 2024–Jul 2025.
46	Kuhyon S&D Co., Ltd. Top agencies DOS (Department of State)	$387,821	0.1%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Aug 2024–Jul 2025.
47	Michael Melton Contracting LLC Top agencies USDA (Department of Agriculture)	$323,000	0.1%	Rank history: #47 in FY2021, #44 in FY2022, not on the FY2023 list, #45 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
48	Cremer Global Services, Incorporated Top agencies Navy (Department of the Navy)	$307,549	0.1%	Rank history: not on the FY2021 list, #48 in FY2022, #26 in FY2023, #26 in FY2024 and #29 in FY2025; down 14 since Aug 2024–Jul 2025.
49	Simon Kouba Consultants Ltd Top agencies DOS (Department of State)	$275,117	0.1%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #43 in FY2025; down 38 since Aug 2024–Jul 2025.
50	SIA Filter Top agencies DOS (Department of State)	$258,622	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
51	Tidewater, Inc. Top agencies USAF (Department of the Air Force)	$258,429	0.1%	Rank history: #71 in FY2021, #38 in FY2022, #68 in FY2023, #31 in FY2024 and #25 in FY2025; down 23 since Aug 2024–Jul 2025.
52	DFS Construction, LLC Top agencies DOS (Department of State)	$244,136	0.1%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Aug 2024–Jul 2025.
53	Greenstone Construction Inc. Top agencies HHS (Department of Health and Human Services)	$241,361	0.1%	Rank history: not on the FY2021–FY2023 lists, #5 in FY2024 and #30 in FY2025; down 48 since Aug 2024–Jul 2025.
54	Brigante Engineering S.R.L. Top agencies DOS (Department of State)	$223,150	<0.1%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; new, not ranked in Aug 2024–Jul 2025.
55	Framaco-Bozdemir Joint Venture LLC Top agencies DOS (Department of State)	$213,859	<0.1%	Rank history: not on the FY2021 list, #17 in FY2022, #20 in FY2023, #95 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
56	Diamond Housing, LLC Top agencies DOI (Department of the Interior)	$198,426	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
57	Northcon Inc. Top agencies HHS (Department of Health and Human Services)	$186,527	<0.1%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2023, #47 in FY2024 and #51 in FY2025; new, not ranked in Aug 2024–Jul 2025.
58	Coastal ECO Construction,Inc. Top agencies DOI (Department of the Interior)	$183,787	<0.1%	Rank history: not on the FY2021 list, #84 in FY2022, not on the FY2023–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
59	Diamond Back Forestry LLC Top agencies USDA (Department of Agriculture)	$176,868	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	Dki808 LLC Top agencies DHS (Department of Homeland Security)	$172,812	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
61	KRD Enterprise Pte. Ltd. Top agencies DOS (Department of State)	$172,769	<0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	SGI Construction LLC Top agencies DOI (Department of the Interior)	$164,908	<0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; up 9 since Aug 2024–Jul 2025.
63	Innergie Technologies,Inc. Top agencies DOS (Department of State)	$161,468	<0.1%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; new, not ranked in Aug 2024–Jul 2025.
64	AO Facility Contractors LLC Top agencies DHS (Department of Homeland Security)	$150,673	<0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Aug 2024–Jul 2025.
65	Kone Mexico SA De CV Top agencies DOS (Department of State)	$149,266	<0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	Habitek S.R.L. Top agencies DOS (Department of State)	$147,957	<0.1%	Rank history: not on the FY2021–FY2023 lists, #52 in FY2024 and #44 in FY2025; down 1 since Aug 2024–Jul 2025.
67	Cmip LLC Top agencies USDA (Department of Agriculture)	$124,504	<0.1%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; new, not ranked in Aug 2024–Jul 2025.
68	Orixon PTY Ltd Top agencies DOS (Department of State)	$119,092	<0.1%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; new, not ranked in Aug 2024–Jul 2025.
69	Terra Site Constructors LLC Top agencies DOI (Department of the Interior)	$117,537	<0.1%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and #32 in FY2025; down 31 since Aug 2024–Jul 2025.
70	Property Management Resources LLC Top agencies DOJ (Department of Justice)	$112,755	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	Abbatelli - S.R.L. Top agencies DOS (Department of State)	$107,076	<0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Aug 2024–Jul 2025.
72	FMS Provider LLC Top agencies DHS (Department of Homeland Security)	$99,988	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
73	The Blackledge Group, Inc. Top agencies DHS (Department of Homeland Security)	$97,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; new, not ranked in Aug 2024–Jul 2025.
74	Electricians on Call Corp Top agencies DHS (Department of Homeland Security)	$94,500	<0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; new, not ranked in Aug 2024–Jul 2025.
75	Jaxon Construction Inc Top agencies DOI (Department of the Interior)	$88,113	<0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Aug 2024–Jul 2025.
76	Gilbert Solutions LLC Top agencies DHS (Department of Homeland Security)	$80,340	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
77	Reliant Asset Management LLC Through Aries Building Systems, LLC Top agencies DOI (Department of the Interior)	$80,048	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Aug 2024–Jul 2025.
78	Alpha Rinks Co., Ltd. Top agencies DOS (Department of State)	$78,650	<0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; new, not ranked in Aug 2024–Jul 2025.
79	Wolff & Muller Government Services GMBH & Co. KG Through Wolff & Müller Government Services GMBH & Co. KG Top agencies Army (Department of the Army)	$73,463	<0.1%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; down 23 since Aug 2024–Jul 2025.
80	PT. Lajogi Makmur Bersama Top agencies DOS (Department of State)	$66,369	<0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; up 44 since Aug 2024–Jul 2025.
81	Einhäupl Gesellschaft MIT Beschränkter Haftung Top agencies Army (Department of the Army)	$65,746	<0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; new, not ranked in Aug 2024–Jul 2025.
82	Hwsi GMBH Top agencies DOS (Department of State)	$65,224	<0.1%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
83	Eight Quarter Construction LLC Top agencies DOI (Department of the Interior)	$63,707	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
84	Pimmex Contracting Corp Top agencies HHS (Department of Health and Human Services)	$62,957	<0.1%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; down 69 since Aug 2024–Jul 2025.
85	Kipon Odos Limited Liability Company Top agencies DOS (Department of State)	$58,447	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Aug 2024–Jul 2025.
86	JP General Inc. Top agencies USAF (Department of the Air Force)	$57,513	<0.1%	Rank history: #59 in FY2021, #31 in FY2022, #33 in FY2023, #84 in FY2024 and #37 in FY2025; down 45 since Aug 2024–Jul 2025.
87	Prime Construction Services LLC Top agencies USDA (Department of Agriculture)	$53,680	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
88	Edgar Altamirano Arteaga Top agencies DOS (Department of State)	$50,181	<0.1%	Rank history: not on the FY2021 list, #62 in FY2022, #49 in FY2023, #69 in FY2024 and #96 in FY2025; down 28 since Aug 2024–Jul 2025.
89	Sundance Co Through Sundance Investments LLLP Top agencies USDA (Department of Agriculture)	$49,243	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	T & D Barrs Plumbing and Heating Limited Top agencies DOS (Department of State)	$48,161	<0.1%	Rank history: #22 in FY2021, #26 in FY2022, #35 in FY2023, #22 in FY2024 and #24 in FY2025; down 70 since Aug 2024–Jul 2025.
91	S-Tec System Co., Ltd Top agencies DOS (Department of State)	$46,642	<0.1%	Rank history: not on the FY2021–FY2023 lists, #80 in FY2024 and #55 in FY2025; down 21 since Aug 2024–Jul 2025.
92	Focused Asset Management LLC Top agencies DHS (Department of Homeland Security)	$44,700	<0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Aug 2024–Jul 2025.
93	Astrapellos, I., & Co E.E. "Elkon" Top agencies DOS (Department of State)	$43,684	<0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; new, not ranked in Aug 2024–Jul 2025.
94	GEA Wood Italia S.R.L. Top agencies DOS (Department of State)	$42,112	<0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; up 18 since Aug 2024–Jul 2025.
95	HAN Bo Industrial Co. Top agencies DOS (Department of State)	$40,487	<0.1%	Rank history: #99 in FY2021, #90 in FY2022, #82 in FY2023, not on the FY2024 list and #71 in FY2025; down 20 since Aug 2024–Jul 2025.
96	Ergon Constructions Eterorrythmi Etaireia Top agencies DOS (Department of State)	$39,906	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
97	Mamisa Logistics Top agencies Army (Department of the Army)	$39,704	<0.1%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, #98 in FY2024 and not on the FY2025 list; down 9 since Aug 2024–Jul 2025.
98	Sunshade Enterprise Top agencies DOS (Department of State)	$39,667	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
99	MFG Ingenieria SAS Top agencies DOS (Department of State)	$38,659	<0.1%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #84 in FY2025; down 27 since Aug 2024–Jul 2025.
100	Houyuu Kensetsu Ltd Top agencies DOS (Department of State)	$36,937	<0.1%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #78 in FY2025; down 6 since Aug 2024–Jul 2025.

Rankings for the codes under NAICS 23611

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 $475 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "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.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers