YORK SPACE SYSTEMS INC (YSS)
Institutional ownership reported to the SEC as of Q2 2026, across 3 quarters.
Institutions report 64,991,391 shares against 137,357,605 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $473.0M | 19,212,689 | 0.01% | 2q | +1.1%+$4.9M |
| AE INDUSTRIAL PARTNERS, LP | $288.7M | 11,728,057 | 21.10% | 2q | +3.8%+$10.6M |
| Allianz Asset Management GmbH | $67.1M | 2,726,783 | 0.05% | 2q | HELD |
| Hood River Capital Management LLC | $48.4M | 1,963,942 | 0.35% | 2q | +98.7%+$24.0M |
| Tema ETFs LLC | $46.9M | 1,904,718 | 1.52% | 2q | +164099.8%+$46.9M |
| Tidal Investments LLC | $45.4M | 1,843,269 | 0.08% | new | NEW |
| WESTWOOD HOLDINGS GROUP INC | $42.8M | 1,736,906 | 0.32% | 2q | +324.5%+$32.7M |
| VOYA INVESTMENT MANAGEMENT LLC | $39.8M | 1,618,318 | 0.03% | 2q | +50.2%+$13.3M |
| UBS Group AG | $37.2M | 1,512,752 | 0.00% | 2q | +43.5%+$11.3M |
| STATE STREET CORP | $35.3M | 1,433,938 | 0.00% | 2q | +314.4%+$26.8M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $33.7M | 1,369,727 | 0.04% | 2q | +16296.1%+$33.5M |
| Clearbridge Investments, LLC | $32.5M | 1,318,391 | 0.03% | 2q | -2.0%-$666.3K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $31.5M incl. $27.8M options CALL+PUT | 152,176 | 0.00% | 2q | +1192.3%+$29.1M |
| Temasek Holdings (Private) Ltd | $25.3M | 1,027,774 | 0.07% | 2q | +128.4%+$14.2M |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | $23.7M | 961,190 | 0.47% | 2q | +110.4%+$12.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | $20.8M | 844,079 | 0.00% | 2q | +0.5%+$113.6K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $20.2M | 820,963 | 0.00% | 2q | +4.3%+$826.0K |
| FRONTIER CAPITAL MANAGEMENT CO LLC | $18.0M | 733,025 | 0.17% | new | NEW |
| Burkehill Global Management, LP | $16.5M | 668,705 | 0.59% | 2q | HELD |
| Penserra Capital Management LLC | $15.8M | 641,961 | 0.12% | new | NEW |
| SEI INVESTMENTS CO | $15.6M | 632,624 | 0.01% | 2q | +52.3%+$5.3M |
| ExodusPoint Capital Management, LP | $14.1M | 570,784 | 0.09% | 2q | -3.8%-$550.0K |
| Allspring Global Investments Holdings, LLC | $13.7M | 557,306 | 0.02% | 2q | -23.9%-$4.3M |
| Granahan Investment Management, LLC | $11.5M | 468,190 | 0.41% | 2q | -51.6%-$12.3M |
| GEODE CAPITAL MANAGEMENT, LLC | $11.3M | 459,686 | 0.00% | 2q | +7.4%+$778.4K |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $11.2M | 465,145 | 0.01% | 2q | -4.2%-$489.7K |
| GROUP ONE TRADING LLC | $10.9M incl. $10.7M options CALL+PUT | 7,417 | 0.02% | 2q | +186.7%+$7.1M |
| CITADEL ADVISORS LLC | $9.6M incl. $8.9M options CALL+PUT | 27,283 | 0.00% | 2q | -97.1%-$323.6M |
| MORGAN STANLEY | $9.5M | 386,542 | 0.00% | 2q | +36.3%+$2.5M |
| AMERICAN CENTURY COMPANIES INC | $9.2M | 373,867 | 0.00% | 2q | +2.6%+$229.4K |
| BANK OF AMERICA CORP /DE/ | $9.1M | 370,425 | 0.00% | 2q | +234.2%+$6.4M |
| Stephens Investment Management Group LLC | $8.6M | 348,762 | 0.09% | 2q | -39.0%-$5.5M |
| NISSAY ASSET MANAGEMENT CORP /JAPAN | $8.5M | 345,127 | 0.04% | new | NEW |
| Artisan Partners Limited Partnership | $7.7M | 311,427 | 0.01% | 2q | -55.9%-$9.7M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $7.4M | 300,000 | 0.01% | 2q | -25.0%-$2.5M |
| JANE STREET GROUP, LLC | $7.1M CALL+PUT | options only | 0.00% | 2q | OPTIONS |
| ArrowMark Colorado Holdings LLC | $6.6M | 268,937 | 0.28% | 2q | -58.5%-$9.3M |
| TORONTO DOMINION BANK | $6.5M | 263,000 | 0.01% | new | NEW |
| SEGALL BRYANT & HAMILL, LLC | $5.8M | 235,631 | 0.07% | new | NEW |
| GOLDMAN SACHS GROUP INC | $5.3M incl. $1.5M options PUT | 156,640 | 0.00% | 2q | +192.0%+$3.5M |
| Ghisallo Capital Management LLC | $4.9M | 200,000 | 0.10% | 2q | -51.0%-$5.1M |
| Resolute Capital Asset Partners LLC | $4.5M | 184,206 | 1.94% | 2q | -9.8%-$492.4K |
| WELLINGTON MANAGEMENT GROUP LLP | $4.2M | 171,853 | 0.00% | 2q | -87.0%-$28.4M |
| Vident Advisory, LLC | $4.2M | 170,459 | 0.03% | new | NEW |
| Sculptor Capital LP | $4.1M CALL+PUT | options only | 0.03% | new | OPTIONS |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $4.0M | 160,547 | 0.00% | 2q | +2.7%+$104.8K |
| LORD, ABBETT & CO. LLC | $3.8M | 155,096 | 0.01% | 2q | -81.0%-$16.3M |
| NORTHERN TRUST CORP | $3.8M | 152,439 | 0.00% | 2q | +11.6%+$389.4K |
| Blackstone Inc. | $3.7M | 150,000 | 0.01% | 2q | HELD |
| VANGUARD FIDUCIARY TRUST CO | $3.4M | 137,048 | 0.00% | 2q | +6.9%+$217.2K |
| FEDERATED HERMES, INC. | $3.3M | 133,200 | 0.00% | 2q | -53.8%-$3.8M |
| TCW GROUP INC | $3.2M | 128,250 | 0.02% | new | NEW |
| Orion Porfolio Solutions, LLC | $3.1M | 126,127 | 0.02% | 2q | +54.6%+$1.1M |
| Swedbank AB | $3.0M | 121,893 | 0.00% | 2q | -21.1%-$804.5K |
| Stenham Asset Management Ltd | $2.7M | 110,651 | 1.95% | 2q | HELD |
| Nuveen, LLC | $2.6M | 105,365 | 0.00% | 2q | +409.8%+$2.1M |
| NEW YORK STATE COMMON RETIREMENT FUND | $2.5M | 101,517 | 0.00% | 2q | -43.2%-$1.9M |
| NORGES BANK | $2.5M | 100,000 | 0.00% | new | NEW |
| FIFTH THIRD BANCORP | $2.4M | 97,414 | 0.00% | 2q | +20152.4%+$2.4M |
| FMR LLC | $2.2M | 89,988 | 0.00% | 2q | -5.9%-$137.7K |
| PEAK6 LLC | $2.1M CALL | options only | 0.00% | new | OPTIONS |
| IMC-Chicago, LLC | $1.9M CALL+PUT | options only | 0.00% | 2q | OPTIONS |
| RAYMOND JAMES FINANCIAL INC | $1.7M | 71,051 | 0.00% | 2q | +7.3%+$118.8K |
| WELLS FARGO & COMPANY/MN | $1.6M | 66,001 | 0.00% | 2q | -27.4%-$612.9K |
| EXCHANGE TRADED CONCEPTS, LLC | $1.6M | 64,911 | 0.01% | 2q | +262.6%+$1.2M |
| Diametric Capital, LP | $1.5M | 62,516 | 0.16% | 2q | -15.4%-$279.1K |
| Bank of New York Mellon Corp | $1.4M | 56,873 | 0.00% | 2q | -96.6%-$40.0M |
| Walleye Capital LLC | $1.3M | 54,007 | 0.00% | 2q | HELD |
| SEVEN GRAND MANAGERS, LLC | $1.2M | 50,000 | 0.05% | 2q | -66.7%-$2.5M |
| Daiwa Securities Group Inc. | $1.2M incl. $68.9K options CALL+PUT | 46,595 | 0.00% | 2q | -92.5%-$15.0M |
| Mitsubishi UFJ Asset Management Co., Ltd. | $1.2M | 47,200 | 0.00% | new | NEW |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | $1.1M | 45,730 | 0.00% | 2q | +280.4%+$829.9K |
| SIMPLEX TRADING, LLC | $1.1M incl. $1.1M options CALL+PUT | 545 | 0.00% | 2q | HELD |
| MILLENNIUM MANAGEMENT LLC | $1.0M | 41,307 | 0.00% | new | NEW |
| Canal Insurance CO | $985.0K | 40,000 | 0.22% | new | NEW |
| ROYAL BANK OF CANADA | $925.0K | 37,565 | 0.00% | 2q | -1.9%-$18.0K |
| AMERIPRISE FINANCIAL INC | $909.8K | 36,955 | 0.00% | 2q | -94.1%-$14.4M |
| FIRST TRUST ADVISORS LP | $899.6K | 36,540 | 0.00% | new | NEW |
| MOODY NATIONAL BANK TRUST DIVISION | $882.7K | 35,851 | 0.07% | new | NEW |
| JPMORGAN CHASE & CO | $857.2K | 34,695 | 0.00% | 2q | +17.5%+$127.8K |
| ALLIANCEBERNSTEIN L.P. | $816.7K | 36,840 | 0.00% | new | NEW |
| MARSHALL WACE, LLP | $800.5K | 32,513 | 0.00% | new | NEW |
| Cetera Investment Advisers | $776.1K | 31,522 | 0.00% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $736.9K | 29,932 | 0.00% | 2q | +687.7%+$643.4K |
| LPL Financial LLC | $696.3K | 28,280 | 0.00% | 2q | +121.9%+$382.5K |
| AQR CAPITAL MANAGEMENT LLC | $685.4K | 27,840 | 0.00% | new | NEW |
| ROYCE & ASSOCIATES LP | $677.3K | 27,510 | 0.01% | new | NEW |
| FRED ALGER MANAGEMENT, LLC | $662.3K | 26,902 | 0.00% | 2q | -60.9%-$1.0M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $646.7K | 26,267 | 0.00% | 2q | -94.9%-$12.1M |
| Longaeva Partners L.P. | $623.6K | 25,331 | 0.01% | 2q | -87.9%-$4.5M |
| CITIGROUP INC | $617.2K | 25,071 | 0.00% | 2q | +1627.8%+$581.5K |
| Squarepoint Ops LLC | $577.6K | 23,461 | 0.00% | 2q | +87.2%+$269.0K |
| TUDOR INVESTMENT CORP ET AL | $566.4K | 23,006 | 0.00% | 2q | +61.2%+$214.9K |
| RHUMBLINE ADVISERS | $546.4K | 22,195 | 0.00% | 2q | +43.7%+$166.1K |
| Hilltop Holdings Inc. | $474.5K | 19,273 | 0.04% | new | NEW |
| DEUTSCHE BANK AG\ | $468.2K | 19,019 | 0.00% | 2q | +66.6%+$187.2K |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY | $449.0K | 18,253 | 0.00% | 2q | -18.1%-$99.4K |
| GAMCO INVESTORS, INC. ET AL | $425.2K | 17,271 | 0.00% | 2q | -3.2%-$14.2K |
| Cambridge Investment Research Advisors, Inc. | $414.0K | 16,836 | 0.00% | new | NEW |
| Brevan Howard Capital Management LP | $399.8K | 16,239 | 0.00% | 2q | -85.1%-$2.3M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-27 | 13G | BlackRock, Inc. | 5.4% |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-08-05 | 2026-07-30 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Ten percent owners and entities
Usually an institution that crossed a reporting threshold, or a company taking a strategic stake, rather than an individual with a view.
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-04 | BlackRock Portfolio Management LLC | 10% owner | Sold | 546,558 | $8.5M ×2 |
| 2026-08-04 | BlackRock Portfolio Management LLC | 10% owner | Sold | 534,053 | $8.3M ×2 |
| 2026-08-06 | BlackRock Portfolio Management LLC | 10% owner | Sold | 201,504 | $2.3M |
| 2026-08-07 | BlackRock Portfolio Management LLC | 10% owner | Sold | 200,170 | $2.2M |
| 2026-07-30 | BlackRock Portfolio Management LLC | 10% owner | Sold | 140,823 | $2.1M |
| 2026-08-05 | BlackRock Portfolio Management LLC | 10% owner | Sold | 128,046 | $1.7M ×2 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 31 | $14.9M | 1,719,229 | 15 | 9 | 3 | 0.0% |
| Q2 2026 | 166 | $1.7B | 64,991,391 | 61 | 52 | 42 | 3.9% |
| Q1 2026 | 144 | $1.4B | 62,056,950 | 144 | 0 | 0 | 1.3% |
