YSS · York Space Systems Inc. · Shareholders & Ownership

$5.84 +0.11 (+1.92%)

Russell 2000 member Rebalance outlook locked

Market Cap

$806.98M

137.36M

Volume · Oct 20 1.64M Avg daily vol (3M) 3.06M

Every disclosed holder of YSS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns YSS

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	162	64,365,925	46.86%	Yes
Insiders (Forms 3, 4, 5)	14	61,435,911	44.73%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	11,555,769	8.41%	Rest
Registered funds (N-PORT, not summed)	161	12,427,623	9.05%	No

Shares outstanding: 137,357,605, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of YSS

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	AEROEQUITY GP, LLC Insider CIK 1880792 · Jul 8, 2026 10% Owner, issuer-wide	32,915,588	23.96%	+2,289,366	Jul 8, 2026	10% Owner, issuer-wide
1.1	Aeroequity GP, LLC 13G CIK 1880792 · Unknown · Jun 30, 2026 Rule 13d-1(d), exempt investor, not summed	32,915,588	23.96%	+2,719,500	Jun 30, 2026	Rule 13d-1(d), exempt investor, not summed
2	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	19,212,689	13.99%	+200,250	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	501,436	0.37%	+87,492	Jun 30, 2026	iShares Trust, not summed
2.2	iShares U.S. Aerospace & Defense ETF Fund S000009423 · Registered fund · Jun 30, 2026 iShares Trust, not summed	193,506	0.14%	—	Jun 30, 2026	iShares Trust, not summed
2.3	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	179,510	0.13%	+89,728	Jun 30, 2026	iShares Trust, not summed
2.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	35,732	0.03%	+6,802	Jun 30, 2026	Quantitative Master Series LLC, not summed
2.5	iShares U.S. Small-Cap Equity Factor ETF Fund S000048624 · Registered fund · Jul 31, 2026 iShares Trust, not summed	35,190	0.03%	+12,817	Jul 31, 2026	iShares Trust, not summed
3	BlackRock Portfolio Management LLC Insider CIK 2052113 · Aug 7, 2026 10% Owner, issuer-wide	16,517,115	12.02%	-401,674	Aug 7, 2026	10% Owner, issuer-wide
3.1	BlackRock Portfolio Management LLC 13G CIK 2052113 · Holding company · Mar 31, 2026 Rule 13d-1(d), exempt investor, not summed	17,846,934	12.99%	—	Mar 31, 2026	Rule 13d-1(d), exempt investor, not summed
4	AE INDUSTRIAL PARTNERS, LP 13F CIK 1880785 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	11,728,057	8.54%	+430,134	Jun 30, 2026	carried, not yet filed for the newest quarter
5	Dirk Wallinger 13G CIK 2100113 · Unknown · Mar 31, 2026 Rule 13d-1(d), exempt investor, not summed	11,168,593	8.13%	—	Mar 31, 2026	Rule 13d-1(d), exempt investor, not summed
5.1	Wallinger Dirk Insider CIK 2100113 · Jan 30, 2026 Director, Chief Executive Officer, issuer-wide	9,783,222	7.12%	—	Jan 30, 2026	Director, Chief Executive Officer, issuer-wide
6	Allianz Asset Management GmbH 13F CIK 1535323 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2,726,783	1.99%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
7	Tema Space Innovators ETF Fund S000102192 · Registered fund · May 31, 2026 Tema ETF Trust, not summed	2,221,108	1.62%	—	May 31, 2026	Tema ETF Trust, not summed
8	Hood River Capital Management LLC 13F CIK 1578177 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,963,942	1.43%	+975,432	Jun 30, 2026	carried, not yet filed for the newest quarter
8.1	Hood River Small-Cap Growth Fund Fund S000012813 · Registered fund · Jun 30, 2026 Manager Directed Portfolios, not summed	1,023,015	0.74%	+506,494	Jun 30, 2026	Manager Directed Portfolios, not summed
8.2	Hood River New Opportunities Fund Fund S000086255 · Registered fund · Jun 30, 2026 Manager Directed Portfolios, not summed	131,544	0.10%	+71,030	Jun 30, 2026	Manager Directed Portfolios, not summed
9	Tidal Investments LLC 13F CIK 1600064 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,843,269	1.34%	+1,843,269	Jun 30, 2026	carried, not yet filed for the newest quarter
10	WESTWOOD HOLDINGS GROUP INC 13F CIK 1165002 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,736,906	1.26%	+1,327,720	Jun 30, 2026	carried, not yet filed for the newest quarter
11	VOYA INVESTMENT MANAGEMENT LLC 13F CIK 1068837 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,618,318	1.18%	+540,708	Jun 30, 2026	carried, not yet filed for the newest quarter
12	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,512,752	1.10%	+458,908	Jun 30, 2026	carried, not yet filed for the newest quarter
13	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,433,938	1.04%	+1,087,889	Jun 30, 2026	carried, not yet filed for the newest quarter
13.1	State Street(R) SPDR(R) S&P(R) Aerospace & Defense ETF Fund S000012318 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	1,039,642	0.76%	—	Jun 30, 2026	SPDR SERIES TRUST, not summed
13.2	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	6,800	0.01%	+700	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
13.3	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	483	0.00%	+60	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
13.4	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	119	0.00%	—	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
14	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 13F CIK 1705339 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,369,727	1.00%	+1,361,373	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	Global X Russell 2000 ETF Fund S000085029 · Registered fund · Jul 31, 2026 GLOBAL X FUNDS, not summed	9,094	0.01%	+1,388	Jul 31, 2026	GLOBAL X FUNDS, not summed
15	Clearbridge Investments, LLC 13F CIK 1348883 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,318,391	0.96%	-27,063	Jun 30, 2026	carried, not yet filed for the newest quarter
16	Tema ETFs LLC 13F CIK 2056807 · Registered investment adviser · Sep 30, 2026	1,087,938	0.79%	-816,780	Sep 30, 2026
17	Temasek Holdings (Private) Ltd 13F CIK 1021944 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,027,774	0.75%	+577,774	Jun 30, 2026	carried, not yet filed for the newest quarter
18	Messerle Kevin Insider CIK 2100089 · Jan 30, 2026 Chief Financial Officer, issuer-wide	998,319	0.73%	+80,882	Jan 30, 2026	Chief Financial Officer, issuer-wide
19	SYSTEMATIC FINANCIAL MANAGEMENT LP 13F CIK 1085936 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	961,190	0.70%	+504,266	Jun 30, 2026	carried, not yet filed for the newest quarter
20	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	844,079	0.61%	+4,615	Jun 30, 2026	carried, not yet filed for the newest quarter
21	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	820,963	0.60%	+33,549	Jun 30, 2026	carried, not yet filed for the newest quarter
22	Palko Monica J. Insider CIK 2100091 · Jan 30, 2026 See Remarks, issuer-wide	735,005	0.54%	+54,412	Jan 30, 2026	See Remarks, issuer-wide
23	FRONTIER CAPITAL MANAGEMENT CO LLC 13F CIK 351173 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	733,025	0.53%	+733,025	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Burkehill Global Management, LP 13F CIK 1904549 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	668,705	0.49%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
25	Penserra Capital Management LLC 13F CIK 1593324 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	641,961	0.47%	+641,961	Jun 30, 2026	carried, not yet filed for the newest quarter
26	SEI INVESTMENTS CO 13F CIK 350894 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	632,624	0.46%	+217,168	Jun 30, 2026	carried, not yet filed for the newest quarter
26.1	New Covenant Growth Fund Fund S000024941 · Registered fund · Jun 30, 2026 NEW COVENANT FUNDS, not summed	4,627	0.00%	—	Jun 30, 2026	NEW COVENANT FUNDS, not summed
26.2	SIIT EXTENDED MARKET INDEX FUND Fund S000035814 · Registered fund · May 31, 2026 SEI INSTITUTIONAL INVESTMENTS TRUST, not summed	4,000	0.00%	—	May 31, 2026	SEI INSTITUTIONAL INVESTMENTS TRUST, not summed
27	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	602,564	0.44%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
28	ExodusPoint Capital Management, LP 13F CIK 1736225 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	570,784	0.42%	-22,338	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Allspring Global Investments Holdings, LLC 13F CIK 1890906 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	557,306	0.41%	-174,945	Jun 30, 2026	carried, not yet filed for the newest quarter
29.1	Allspring SMID Cap Growth Fund Fund S000007345 · Registered fund · Jun 30, 2026 ALLSPRING FUNDS TRUST, not summed	175,404	0.13%	-75,230	Jun 30, 2026	ALLSPRING FUNDS TRUST, not summed
29.2	Allspring VT Discovery SMID Cap Growth Fund Fund S000007218 · Registered fund · Jun 30, 2026 Allspring VARIABLE TRUST, not summed	34,648	0.03%	-5,058	Jun 30, 2026	Allspring VARIABLE TRUST, not summed
29.3	Allspring VT Small Cap Growth Fund Fund S000007228 · Registered fund · Jun 30, 2026 Allspring VARIABLE TRUST, not summed	29,518	0.02%	0	Jun 30, 2026	Allspring VARIABLE TRUST, not summed
30	Procure Space ETF Fund S000061584 · Registered fund · Jul 31, 2026 Procure ETF Trust II, not summed	516,243	0.38%	—	Jul 31, 2026	Procure ETF Trust II, not summed
31	ClearBridge Select Fund Fund S000039065 · Registered fund · Jul 31, 2026 Legg Mason Partners Investment Trust, not summed	506,869	0.37%	0	Jul 31, 2026	Legg Mason Partners Investment Trust, not summed
32	Granahan Investment Management, LLC 13F CIK 1026710 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	468,190	0.34%	-499,420	Jun 30, 2026	carried, not yet filed for the newest quarter
33	SCHRODER INVESTMENT MANAGEMENT GROUP 13F CIK 1086619 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	465,145	0.34%	-20,311	Jun 30, 2026	carried, not yet filed for the newest quarter
34	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	459,686	0.33%	+31,606	Jun 30, 2026	carried, not yet filed for the newest quarter
35	VANGUARD SMALL-CAP INDEX FUND Fund S000002845 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	438,195	0.32%	-822	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
36	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	386,542	0.28%	+102,879	Jun 30, 2026	carried, not yet filed for the newest quarter
36.1	Inception Portfolio Fund S000002825 · Registered fund · Jun 30, 2026 MORGAN STANLEY INSTITUTIONAL FUND INC, not summed	60,029	0.04%	-647	Jun 30, 2026	MORGAN STANLEY INSTITUTIONAL FUND INC, not summed
37	AMERICAN CENTURY COMPANIES INC 13F CIK 748054 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	373,867	0.27%	+9,317	Jun 30, 2026	carried, not yet filed for the newest quarter
37.1	Select Fund Fund S000006194 · Registered fund · Jul 31, 2026 American Century Mutual Funds, Inc., not summed	345,200	0.25%	0	Jul 31, 2026	American Century Mutual Funds, Inc., not summed
38	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	370,425	0.27%	+259,577	Jun 30, 2026	carried, not yet filed for the newest quarter
39	Rudra Devjyoti Insider CIK 2100452 · Jan 30, 2026 Chief Supply Chain Officer, issuer-wide	358,357	0.26%	+23,529	Jan 30, 2026	Chief Supply Chain Officer, issuer-wide
40	Stephens Investment Management Group LLC 13F CIK 1314440 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	348,762	0.25%	-223,085	Jun 30, 2026	carried, not yet filed for the newest quarter
41	NISSAY ASSET MANAGEMENT CORP /JAPAN 13F CIK 869589 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	345,127	0.25%	+345,127	Jun 30, 2026	carried, not yet filed for the newest quarter
42	ClearBridge Small Cap Growth Fund Fund S000016663 · Registered fund · Jul 31, 2026 Legg Mason Partners Investment Trust, not summed	311,759	0.23%	0	Jul 31, 2026	Legg Mason Partners Investment Trust, not summed
43	Artisan Partners Limited Partnership 13F CIK 1466153 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	311,427	0.23%	-394,319	Jun 30, 2026	carried, not yet filed for the newest quarter
43.1	Artisan Small Cap Fund Fund S000006498 · Registered fund · Jun 30, 2026 Artisan Partners Funds Inc., not summed	140,562	0.10%	-52,914	Jun 30, 2026	Artisan Partners Funds Inc., not summed
44	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 13F CIK 1535845 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	300,000	0.22%	-100,000	Jun 30, 2026	carried, not yet filed for the newest quarter
45	VANGUARD EXPLORER FUND Fund S000002578 · Registered fund · Jul 31, 2026 VANGUARD EXPLORER FUND, not summed	287,514	0.21%	-223,212	Jul 31, 2026	VANGUARD EXPLORER FUND, not summed
46	ArrowMark Colorado Holdings LLC 13F CIK 1483859 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	268,937	0.20%	-379,567	Jun 30, 2026	carried, not yet filed for the newest quarter
46.1	Meridian Growth Fund Fund S000001462 · Registered fund · Jun 30, 2026 Meridian Fund Inc, not summed	114,053	0.08%	-2,479	Jun 30, 2026	Meridian Fund Inc, not summed
46.2	Meridian Small Cap Growth Fund Fund S000042770 · Registered fund · Jun 30, 2026 Meridian Fund Inc, not summed	62,739	0.05%	+17,808	Jun 30, 2026	Meridian Fund Inc, not summed
47	TORONTO DOMINION BANK 13F CIK 947263 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	263,000	0.19%	+263,000	Jun 30, 2026	carried, not yet filed for the newest quarter
48	VANGUARD SMALL-CAP GROWTH INDEX FUND Fund S000002846 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	251,578	0.18%	+7,793	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
49	WESTWOOD QUALITY SMALLCAP FUND Fund S000072842 · Registered fund · Jul 31, 2026 Ultimus Managers Trust, not summed	243,664	0.18%	-38,525	Jul 31, 2026	Ultimus Managers Trust, not summed
50	SEGALL BRYANT & HAMILL, LLC 13F CIK 1006378 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	235,631	0.17%	+235,631	Jun 30, 2026	carried, not yet filed for the newest quarter
50.1	SBH SMALL CAP GROWTH FUND Fund S000043443 · Registered fund · Jun 30, 2026 Segall Bryant & Hamill Trust, not summed	62,182	0.05%	—	Jun 30, 2026	Segall Bryant & Hamill Trust, not summed

6 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 275 holders

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Key facts CIK 2086587 CUSIP 987084100 13F (30d) 19 filings 19 filers Visit website Investor relations