Top 100 Contractors in PSC 2835: Gas Turbines and Jet Engines, Non-Aircraft; and Components, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Honeywell International Inc. 7 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$211,424,148	45.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	General Electric Company 5 awardees, including Unison Industries LLC and GE Aviation Systems LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$59,772,916	12.8%	Rank history: #2 in FY2021, #3 in FY2022, #2 in FY2024 and #3 in FY2025; up 1 since FY2022.
3	RTX Corporation 5 awardees, including Hamilton Sundstrand Corporation, Goodrich Corporation and Collins Engine Nozzles, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$45,119,455	9.7%	Rank history: #8 in FY2021, #6 in FY2022, #6 in FY2024 and #4 in FY2025; up 3 since FY2022.
4	Aarcorp 2 awardees, including AAR Supply Chain, Inc. and AAR Allen Services, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$31,830,299	6.8%	Rank history: #3 in FY2021, #2 in FY2022, #3 in FY2024 and not on the FY2025 list; down 2 since FY2022.
5	Rolls-Royce Military Aero Engines Ltd 2 awardees, including Rolls-Royce Marine North America Inc. and Rolls-Royce Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$28,628,466	6.1%	Rank history: #4 in FY2021, #4 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
6	Next Mro, LLC Top agencies Army (Department of the Army)	$21,918,600	4.7%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2024 and not on the FY2025 list; new.
7	Sherwood Avionics and Accessories, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$15,273,426	3.3%	Rank history: #19 in FY2021, #8 in FY2022, not on the FY2024 list and #9 in FY2025; up 1 since FY2022.
8	Transdigm Group Incorporated 3 awardees, including Aerocontrolex Group, Inc. and Arkwin Industries, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$10,718,628	2.3%	Rank history: #5 in FY2021, #9 in FY2022, #84 in FY2024 and not on the FY2025 list; up 1 since FY2022.
9	Sunpower Corporation Through Hutchinson Aerospace & Industry, Inc. Top agencies DLA (Defense Logistics Agency)	$2,106,456	0.5%	Rank history: #18 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
10	Connectec Company, Inc. Top agencies Army (Department of the Army)	$1,653,120	0.4%	Rank history: not on the FY2021 list, #5 in FY2022, #8 in FY2024 and not on the FY2025 list; down 5 since FY2022.
11	Government of Canada Through Canadian Commercial Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,581,054	0.3%	Rank history: #34 in FY2021, #19 in FY2022, #32 in FY2024 and not on the FY2025 list; up 8 since FY2022.
12	Shapes Group Ltd Co. Top agencies DLA (Defense Logistics Agency)	$1,227,329	0.3%	Rank history: #14 in FY2021, #23 in FY2022, #17 in FY2024 and not on the FY2025 list; up 11 since FY2022.
13	Fiber Dynamics, Inc. Top agencies USAF (Department of the Air Force)	$1,134,665	0.2%	Rank history: #12 in FY2021, #7 in FY2022, #4 in FY2024 and #7 in FY2025; down 6 since FY2022.
14	FBC Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$826,101	0.2%	Rank history: #30 in FY2021, #41 in FY2022, #15 in FY2024 and #24 in FY2025; up 27 since FY2022.
15	Lockheed Martin Corporation 3 awardees, including Sikorsky Aircraft Corporation Top agencies DLA (Defense Logistics Agency)	$795,464	0.2%	Rank history: #29 in FY2021, #37 in FY2022, #39 in FY2024 and #16 in FY2025; up 22 since FY2022.
16	Rolls Wood Group (Repair & Overhauls) Ltd Through RWG Repair & Overhauls USA Inc. Top agencies Navy (Department of the Navy)	$763,778	0.2%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2024 and not on the FY2025 list; new.
17	Woodward Governor Company 2 awardees, including Woodward, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$631,312	0.1%	Rank history: #58 in FY2021, #32 in FY2022, #92 in FY2024 and not on the FY2025 list; up 15 since FY2022.
18	Norcatec LLC Top agencies DLA (Defense Logistics Agency)	$627,650	0.1%	Rank history: #21 in FY2021, #14 in FY2022, #86 in FY2024 and #29 in FY2025; down 4 since FY2022.
19	Rhinestahl Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$569,282	0.1%	Rank history: #24 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; up 16 since FY2022.
20	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$512,705	0.1%	Rank history: #6 in FY2021, #100 in FY2022, #59 in FY2024 and not on the FY2025 list; up 80 since FY2022.
21	Thomas Instrument, Incorporated Top agencies DLA (Defense Logistics Agency)	$511,189	0.1%	Rank history: #16 in FY2021, #15 in FY2022, #29 in FY2024 and #39 in FY2025; down 6 since FY2022.
22	Donaldson Company, Inc. Top agencies DLA (Defense Logistics Agency)	$445,480	0.1%	Rank history: #44 in FY2021, #12 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
23	Graham Corp Through Barber-Nichols, LLC Top agencies Navy (Department of the Navy)	$371,685	0.1%	Rank history: #13 in FY2021, #27 in FY2022, #25 in FY2024 and not on the FY2025 list; up 4 since FY2022.
24	Jamaica Bearings Co., Inc. 2 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$352,447	0.1%	Rank history: #38 in FY2021, #18 in FY2022, #36 in FY2024 and not on the FY2025 list; down 6 since FY2022.
25	Advanced Turbine Services, L.L.C. Top agencies Navy (Department of the Navy)	$292,525	0.1%	Rank history: #32 in FY2021, #16 in FY2022, #48 in FY2024 and #30 in FY2025; down 9 since FY2022.
26	Standardaero Aviation Holdings, Inc. 2 awardees, including Jet Aviation Specialists LLC and Standardaero Component Services, Inc. Top agencies Navy (Department of the Navy)	$265,912	0.1%	Rank history: #42 in FY2021, #72 in FY2022 and not on the FY2024–FY2025 lists; up 46 since FY2022.
27	Libby Power Systems, LLC Top agencies DLA (Defense Logistics Agency)	$251,460	0.1%	Rank history: #22 in FY2021, #30 in FY2022, #55 in FY2024 and #34 in FY2025; up 3 since FY2022.
28	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$242,736	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
29	Northwest Pump & Equipment Co. Top agencies Commerce (Department of Commerce)	$240,236	0.1%	Rank history: #36 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
30	Triman Industries Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$240,030	0.1%	Rank history: #54 in FY2021, #22 in FY2022, #24 in FY2024 and not on the FY2025 list; down 8 since FY2022.
31	Meggitt PLC Through Meggitt (Orange County), Inc. Top agencies Navy (Department of the Navy)	$218,011	<0.1%	Rank history: #40 in FY2021, not on the FY2022 list, #66 in FY2024 and not on the FY2025 list; returned.
32	Turbine Technics Inc. Top agencies DLA (Defense Logistics Agency)	$214,475	<0.1%	Rank history: #17 in FY2021, #33 in FY2022, #28 in FY2024 and #25 in FY2025; up 1 since FY2022.
33	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$188,693	<0.1%	Rank history: not on the FY2021 list, #11 in FY2022, #22 in FY2024 and #26 in FY2025; down 22 since FY2022.
34	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$169,380	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	Aero Components, LLC Top agencies DLA (Defense Logistics Agency)	$165,600	<0.1%	Rank history: #65 in FY2021, #49 in FY2022, not on the FY2024 list and #59 in FY2025; up 14 since FY2022.
36	Aviation Procurement Systems, LLC Top agencies DLA (Defense Logistics Agency)	$165,487	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	Brown Helicopter, Inc. Top agencies DLA (Defense Logistics Agency)	$164,295	<0.1%	Rank history: #27 in FY2021, #25 in FY2022, #23 in FY2024 and #35 in FY2025; down 12 since FY2022.
38	Wood Environment & Infrastructure Solutions Inc. Through Ethosenergy Accessories and Components, LLC Top agencies Navy (Department of the Navy)	$152,790	<0.1%	Rank history: #89 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
39	SGL Carbon SE Through SGL Composites Inc. Top agencies DLA (Defense Logistics Agency)	$151,682	<0.1%	Rank history: #46 in FY2021, #40 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
40	DBR Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$145,766	<0.1%	Rank history: #99 in FY2021, not on the FY2022 list, not on the FY2024 list and #80 in FY2025; returned.
41	Johnson Controls Security Solutions LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$141,854	<0.1%	Rank history: not on the FY2021 list, #91 in FY2022 and not on the FY2024–FY2025 lists; up 50 since FY2022.
42	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top agencies DLA (Defense Logistics Agency)	$140,612	<0.1%	Rank history: #10 in FY2021, #42 in FY2022, #45 in FY2024 and not on the FY2025 list; unchanged since FY2022.
43	General Tool Company Top agencies DLA (Defense Logistics Agency)	$132,542	<0.1%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2024 and #95 in FY2025; new.
44	Service & Sales Inc. Top agencies DLA (Defense Logistics Agency)	$131,258	<0.1%	Rank history: #49 in FY2021, #45 in FY2022, #67 in FY2024 and #41 in FY2025; up 1 since FY2022.
45	S3 International LLC Through S3 Aerodefense LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$124,395	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Rollwall Industries LLC Top agencies DLA (Defense Logistics Agency)	$119,862	<0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2024 and not on the FY2025 list; new.
47	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$107,157	<0.1%	Rank history: not on the FY2021 list, #74 in FY2022, #87 in FY2024 and #91 in FY2025; up 27 since FY2022.
48	Avair, LLC Top agencies DLA (Defense Logistics Agency)	$104,695	<0.1%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2024 and #18 in FY2025; new.
49	The Boeing Company 2 awardees, including Boeing Distribution Services X, Inc. Top agencies DLA (Defense Logistics Agency)	$101,657	<0.1%	Rank history: #43 in FY2021, #29 in FY2022, #12 in FY2024 and #12 in FY2025; down 20 since FY2022.
50	Valcorp Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$96,664	<0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and not on the FY2025 list; new.
51	Argo Turboserve Corporation Top agencies Navy (Department of the Navy)	$86,117	<0.1%	Rank history: not on the FY2021 list, #34 in FY2022 and not on the FY2024–FY2025 lists; down 17 since FY2022.
52	Aerometals, Inc. Top agencies DLA (Defense Logistics Agency)	$71,909	<0.1%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2024 and #32 in FY2025; new.
53	Panther Machining and Hardware LLC Top agencies DLA (Defense Logistics Agency)	$64,132	<0.1%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2024 and #87 in FY2025; new.
54	Sauer Compressors USA Inc. Top agencies Navy (Department of the Navy)	$63,835	<0.1%	Rank history: #57 in FY2021, #47 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
55	T & T Fabrication LLC Top agencies DLA (Defense Logistics Agency)	$63,760	<0.1%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2024 and #53 in FY2025; new.
56	Kent Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$59,631	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
57	U.s. Hardware Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$57,050	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Pride Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$56,872	<0.1%	Rank history: #59 in FY2021, #84 in FY2022, #91 in FY2024 and not on the FY2025 list; up 26 since FY2022.
59	Atap Inc. Top agencies DLA (Defense Logistics Agency)	$56,391	<0.1%	Rank history: #45 in FY2021, #43 in FY2022, #71 in FY2024 and not on the FY2025 list; down 16 since FY2022.
60	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$55,558	<0.1%	Rank history: #39 in FY2021, #24 in FY2022, not on the FY2024 list and #33 in FY2025; down 36 since FY2022.
61	Maximum Turbine Support Inc. Top agencies DLA (Defense Logistics Agency)	$52,920	<0.1%	Rank history: #63 in FY2021, not on the FY2022 list, #93 in FY2024 and not on the FY2025 list; returned.
62	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$51,912	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	Equipment Parts Sales Top agencies DLA (Defense Logistics Agency)	$50,215	<0.1%	Rank history: #93 in FY2021, #90 in FY2022, #99 in FY2024 and not on the FY2025 list; up 27 since FY2022.
64	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$45,865	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #52 in FY2025; new.
65	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$43,904	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #67 in FY2025; new.
66	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$42,643	<0.1%	Rank history: #74 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
67	Central Florida Yamaha Inc. Top agencies USDA (Department of Agriculture)	$41,012	<0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2024 and #58 in FY2025; new.
68	Valley Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$40,800	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
69	Vertical Parts Inc. Top agencies DLA (Defense Logistics Agency)	$35,100	<0.1%	Rank history: not on the FY2021 list, #71 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
70	Intermetra Corporation Through Pinnacle Research and Aviation, LLC Top agencies DLA (Defense Logistics Agency)	$33,611	<0.1%	Rank history: #100 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
71	Blue Ash Tool & Die Co Inc. Top agencies DLA (Defense Logistics Agency)	$31,578	<0.1%	Rank history: #69 in FY2021, #85 in FY2022, #94 in FY2024 and not on the FY2025 list; up 14 since FY2022.
72	Power Engineering and Manufacturing, Ltd. Top agencies Army (Department of the Army)	$30,486	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Austal Limited Through Austal Usa, LLC Top agencies Navy (Department of the Navy)	$29,150	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
74	Secure Components, LLC Top agencies DLA (Defense Logistics Agency)	$27,979	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
75	Alamo Aircraft Supply Inc. Through Alamo Aircraft, Ltd. Top agencies DLA (Defense Logistics Agency)	$25,200	<0.1%	Rank history: not on the FY2021 list, #59 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
76	Colbert Manufacturing Co Inc Top agencies DLA (Defense Logistics Agency)	$24,580	<0.1%	Rank history: #92 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; down 20 since FY2022.
77	Aviarms Support Corp Top agencies DLA (Defense Logistics Agency)	$23,147	<0.1%	Rank history: #85 in FY2021, #65 in FY2022, #62 in FY2024 and #60 in FY2025; down 12 since FY2022.
78	Z and K Services Inc. Top agencies DLA (Defense Logistics Agency)	$21,102	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
79	Era Industrial Sales Corp Top agencies DLA (Defense Logistics Agency)	$21,042	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	Cynthia Garcia Through Aero Space Composites LLC Top agencies DLA (Defense Logistics Agency)	$19,190	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
81	Kellie LLC Top agencies DLA (Defense Logistics Agency)	$18,850	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
82	Ordnance Technology Service, Inc. Top agencies DLA (Defense Logistics Agency)	$16,578	<0.1%	Rank history: #51 in FY2021, not on the FY2022 list, #35 in FY2024 and #69 in FY2025; returned.
83	Fairbanks Morse LLC Top agencies Navy (Department of the Navy)	$11,132	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Fincantieri Marine Systems North America Inc. Top agencies DLA (Defense Logistics Agency)	$9,680	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	Equitable Engineering Company Inc. Top agencies DLA (Defense Logistics Agency)	$8,400	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 17 since FY2022.
86	Freehold Manufacturing Assembly Company, Inc. Top agencies DLA (Defense Logistics Agency)	$8,298	<0.1%	Rank history: not on the FY2021 list, #75 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
87	Aeroderivative Gas Turbine Support Inc. Top agencies DLA (Defense Logistics Agency)	$8,268	<0.1%	Rank history: #23 in FY2021, not on the FY2022 list, #79 in FY2024 and not on the FY2025 list; returned.
88	Rapp & Sons Inc Through Steel Tool & Engineering Co Top agencies DLA (Defense Logistics Agency)	$7,900	<0.1%	Rank history: not on the FY2021 list, #61 in FY2022 and not on the FY2024–FY2025 lists; down 27 since FY2022.
89	Martin Military Inc. Top agencies DLA (Defense Logistics Agency)	$7,873	<0.1%	Rank history: #68 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
90	Penn Detroit Diesel Allison LLC Through Penn Power Group LLC Top agencies DLA (Defense Logistics Agency)	$5,473	<0.1%	Rank history: #73 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 22 since FY2022.
91	Flexco, Inc. Top agencies DLA (Defense Logistics Agency)	$5,012	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Air New Zealand Engineering Services Top agencies Navy (Department of the Navy)	$5,000	<0.1%	Rank history: #37 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
93	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$4,377	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 14 since FY2022.
94	C U Enterprises Ltd. Top agencies DLA (Defense Logistics Agency)	$3,750	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	ILN Technologies, Inc. Top agencies DLA (Defense Logistics Agency)	$3,740	<0.1%	Rank history: not on the FY2021 list, #63 in FY2022 and not on the FY2024–FY2025 lists; down 32 since FY2022.
96	Centerfield Inc. Top agencies DLA (Defense Logistics Agency)	$3,650	<0.1%	Rank history: not on the FY2021 list, #62 in FY2022, not on the FY2024 list and #76 in FY2025; down 34 since FY2022.
97	Johnson & Towers Inc. Top agencies DLA (Defense Logistics Agency)	$3,506	<0.1%	Rank history: #81 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
98	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$3,390	<0.1%	Rank history: #91 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
99	Aero Precision Industries LLC Through Allclear Aerospace & Defense, Inc. Top agencies DLA (Defense Logistics Agency)	$2,538	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
100	Quality Aviation, Inc. Top agencies DLA (Defense Logistics Agency)	$2,500	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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 $467 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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