YSS · York Space Systems Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding YSS
All superinvestors →Holder Concentration
Across 165 13F filersWho Holds YSS
Last 3 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 162 filers, like-for-like change +4.5%; actively managed books +8.7%; index-like books 0.0%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 45.7% | 79 | +5.7% |
| Exempt adviser | 0.1% | 3 | -78.5% |
| Adviser | 3.2% | 5 | +1.7% |
| Bank | 6.3% | 15 | +16.1% |
| Broker-dealer | 0.1% | 2 | +132.9% |
| Benefit plan | 0.1% | 4 | +13.5% |
| Non-US | 0.7% | 5 | -15.7% |
| Holding company | 33.5% | 9 | -1.0% |
| Unknown | 10.4% | 40 | +18.7% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 35.8% | 19 | 0.0% |
| Systematic-like | 0.4% | 13 | -90.0% |
| Concentrated | 1.5% | 16 | -25.0% |
| Diversified active | 44.2% | 113 | +21.1% |
| Unknown | 18.0% | 1 | +3.8% |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 67.6% | 91 | +10.2% |
| Medium turnover | 26.1% | 39 | +23.5% |
| High turnover | 3.4% | 24 | -66.9% |
| Unknown | 2.9% | 8 | -1.9% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 23.2% | 16 | -5.0% |
| Medium horizon | 35.7% | 20 | +14.7% |
| Long horizon | 37.1% | 115 | +9.7% |
| Unknown | 4.1% | 11 | -35.7% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 0.6% | 23 | -68.7% |
| $1B to $10B | 26.1% | 33 | -0.3% |
| $10B to $100B | 20.4% | 50 | +71.7% |
| $100B or more | 52.8% | 56 | -4.9% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.8% | 27 | +9.2% |
| Pooled investment vehicles | 20.9% | 15 | -20.2% |
| Registered funds and BDCs | 14.7% | 19 | +81.8% |
| Insurance companies | 2.5% | 3 | +49.8% |
| Governments and sovereign funds | 0.0% | 2 | +44.3% |
| Corporations | 0.0% | 1 | new |
| Other investment advisers | 0.0% | 0 | — |
| Diversified | 6.8% | 12 | +5.9% |
| Unknown | 54.3% | 83 | +3.3% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 5.7% | 22 | -54.4% |
| Private equity funds | 21.4% | 8 | +11.2% |
| Venture capital funds | 0.0% | 1 | new |
| Real estate funds | 0.0% | 3 | -7.1% |
| Other private funds | 1.9% | 8 | +36.4% |
| Mixed private funds | 0.1% | 2 | -42.1% |
| Private funds, type not stated | 0.0% | 1 | -95.8% |
| No private funds | 16.7% | 37 | +77.9% |
| Unknown | 54.2% | 80 | +4.2% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 86.8% | 136 | +2.0% |
| Outside the US | 13.2% | 26 | +25.8% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F.
Conviction and Crowding
162 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net sellers of $3,103,903 (0 buying, 1 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 97.1% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies YSS's active holders also own, quarter ended Jun 30, 2026Shareholder Targets
13F filers that own its peers but not YSS, quarter ended Jun 30, 2026Found through its holder-overlap peers: ARXS, ALHC, RDW, LPTH, IMNM, WBI, XE, CELC, KRMN, LASR, LTH, BBIO, FPS, CGNX, AVAV, APG, NRG, AXON, SPOT, WMB. 2,999 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | BAILLIE GIFFORD & CO Adviser, Diversified active | $5,515,065,350 3 held | SPOT, AXON, AVAV |
| 2 | Jupiter Topco LLC Unknown, Diversified active | $3,950,105,279 18 held | BBIO, APG, SPOT |
| 3 | FRANKLIN RESOURCES INC Adviser, Diversified active | $3,574,048,844 17 held | NRG, SPOT, AXON |
| 4 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $2,092,691,255 9 held | IMNM, NRG, APG |
| 5 | DIMENSIONAL FUND ADVISORS LP Registered adviser, Diversified active | $2,061,711,578 15 held | WMB, LTH, NRG |
| 6 | COATUE MANAGEMENT LLC Registered adviser, Concentrated | $1,746,957,943 2 held | FPS, SPOT |
| 7 | Pictet Asset Management Holding SA Unknown, Diversified active | $1,738,498,212 16 held | APG, CGNX, WMB |
| 8 | JENNISON ASSOCIATES LLC Registered adviser, Diversified active | $1,711,525,039 9 held | SPOT, WMB, NRG |
| 9 | Amundi Holding company, Index-like | $1,661,486,488 15 held | WMB, SPOT, AXON |
| 10 | BAMCO INC /NY/ Registered adviser, Concentrated | $1,651,876,891 7 held | SPOT, FPS, CGNX |
Fund Ownership of YSS by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 3.14% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 0.44% | 599,138 |
| Index ETFs | 2.70% | 3,707,972 |
| Active ETFs | 0.03% | 42,020 |
| Active funds | 4.50% | 6,180,085 |
| Unclassified | 1.72% | 2,366,947 |
| All registered funds | 9.39% | 12,896,162 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $473,016,398 | 29.30% | 19,212,689 | Shares | 2026-08-07 | |
| Mid AE INDUSTRIAL PARTNERS, LP Registered adviser | $288,744,763 | 17.89% | 11,728,057 | Shares | 2026-08-14 | |
| Mega Allianz Asset Management GmbH | $67,133,397 | 4.16% | 2,726,783 | Shares | 2026-09-02 | |
| Large Hood River Capital Management LLC Registered adviser | $48,352,252 | 3.00% | 1,963,942 | Shares | 2026-08-14 | |
| Large Tidal Investments LLC Registered adviser | $45,381,282 | 2.81% | 1,843,269 | Shares | 2026-08-13 | |
| Large WESTWOOD HOLDINGS GROUP INC Adviser | $42,762,625 | 2.65% | 1,736,906 | Shares | 2026-08-14 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $39,842,988 | 2.47% | 1,618,318 | Shares | 2026-08-12 | |
| Mega UBS Group AG Bank | $37,243,953 | 2.31% | 1,512,752 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $35,303,553 | 2.19% | 1,433,938 | Shares | 2026-09-22 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $33,722,677 | 2.09% | 1,369,727 | Shares | 2026-08-14 | |
| Mega Clearbridge Investments, LLC Registered adviser | $32,458,786 | 2.01% | 1,318,391 | Shares | 2026-08-13 | |
| Large Temasek Holdings (Private) Ltd Holding company | $25,303,795 | 1.57% | 1,027,774 | Shares | 2026-08-07 | |
| Mid SYSTEMATIC FINANCIAL MANAGEMENT LP Registered adviser | $23,664,496 | 1.47% | 961,190 | Shares | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $20,781,224 | 1.29% | 844,079 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $20,212,109 | 1.25% | 820,963 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $20,082,534 | 1.24% | 815,700 | Put | 2026-08-14 | |
| Large FRONTIER CAPITAL MANAGEMENT CO LLC Registered adviser | $18,047,075 | 1.12% | 733,025 | Shares | 2026-08-14 | |
| Mid Burkehill Global Management, LP Registered adviser | $16,463,517 | 1.02% | 668,705 | Shares | 2026-08-14 | |
| Large Penserra Capital Management LLC Registered adviser | $15,805,079 | 0.98% | 641,961 | Shares | 2026-08-13 | |
| Mega SEI INVESTMENTS CO | $15,575,202 | 0.96% | 632,624 | Shares | 2026-08-14 | |
| Large ExodusPoint Capital Management, LP Registered adviser | $14,052,702 | 0.87% | 570,784 | Shares | 2026-08-14 | |
| Large Allspring Global Investments Holdings, LLC Holding company | $13,720,873 | 0.85% | 557,306 | Shares | 2026-08-13 | |
| Mid Granahan Investment Management, LLC Registered adviser | $11,526,837 | 0.71% | 468,190 | Shares | 2026-08-14 | |
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP Registered adviser | $11,451,869 | 0.71% | 465,145 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $11,317,469 | 0.70% | 459,686 | Shares | 2026-08-12 | |
| Mega MORGAN STANLEY Holding company | $9,516,659 | 0.59% | 386,542 | Shares | 2026-08-13 | |
| Mid Tema ETFs LLC Registered adviser | $9,410,663 | 0.58% | 1,087,938 | Shares | 2026-10-16 | |
| Mega AMERICAN CENTURY COMPANIES INC | $9,204,605 | 0.57% | 373,867 | Shares | 2026-08-12 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $9,119,862 | 0.56% | 370,425 | Shares | 2026-08-14 | |
| Mid Stephens Investment Management Group LLC Registered adviser | $8,586,520 | 0.53% | 348,762 | Shares | 2026-07-29 | |
| Large NISSAY ASSET MANAGEMENT CORP /JAPAN | $8,497,026 | 0.53% | 345,127 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $7,816,850 | 0.48% | 317,500 | Call | 2026-09-02 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $7,708,522 | 0.48% | 313,100 | Call | 2026-08-14 | |
| Large Artisan Partners Limited Partnership Registered adviser | $7,667,332 | 0.47% | 311,427 | Shares | 2026-08-13 | |
| Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Non-US | $7,386,000 | 0.46% | 300,000 | Shares | 2026-08-13 | |
| Mid ArrowMark Colorado Holdings LLC Registered adviser | $6,621,228 | 0.41% | 268,937 | Shares | 2026-08-13 | |
| Large TORONTO DOMINION BANK Bank | $6,475,060 | 0.40% | 263,000 | Shares | 2026-08-14 | |
| Mid SEGALL BRYANT & HAMILL, LLC Registered adviser | $5,801,235 | 0.36% | 235,631 | Shares | 2026-08-12 | |
| Mega JANE STREET GROUP, LLC | $5,093,878 | 0.32% | 206,900 | Put | 2026-08-14 | |
| Mid Ghisallo Capital Management LLC Registered adviser | $4,924,000 | 0.31% | 200,000 | Shares | 2026-08-14 | |
| Small Resolute Capital Asset Partners LLC Registered adviser | $4,535,151 | 0.28% | 184,206 | Shares | 2026-08-14 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $4,231,020 | 0.26% | 171,853 | Shares | 2026-08-14 | |
| Large Vident Advisory, LLC Registered adviser | $4,196,699 | 0.26% | 170,459 | Shares | 2026-08-12 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $3,952,667 | 0.24% | 160,547 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $3,856,476 | 0.24% | 156,640 | Shares | 2026-08-14 | |
| Large LORD, ABBETT & CO. LLC Registered adviser | $3,818,463 | 0.24% | 155,096 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $3,753,048 | 0.23% | 152,439 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $3,746,573 | 0.23% | 152,176 | Shares | 2026-08-14 | |
| Large Blackstone Inc. Adviser | $3,693,000 | 0.23% | 150,000 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $3,374,121 | 0.21% | 137,048 | Shares | 2026-08-13 | |
| Large FEDERATED HERMES, INC. Adviser | $3,279,384 | 0.20% | 133,200 | Shares | 2026-08-12 | |
| Large TCW GROUP INC Holding company | $3,157,514 | 0.20% | 128,250 | Shares | 2026-08-03 | |
| Large Orion Porfolio Solutions, LLC | $3,105,246 | 0.19% | 126,127 | Shares | 2026-08-14 | |
| Mega Swedbank AB | $3,001,005 | 0.19% | 121,893 | Shares | 2026-07-15 | |
| Small Stenham Asset Management Ltd | $2,724,227 | 0.17% | 110,651 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $2,594,086 | 0.16% | 105,365 | Shares | 2026-08-11 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $2,499,348 | 0.15% | 101,517 | Shares | 2026-07-29 | |
| Mega NORGES BANK Non-US | $2,462,000 | 0.15% | 100,000 | Shares | 2026-08-12 | |
| Large FIFTH THIRD BANCORP Bank | $2,398,332 | 0.15% | 97,414 | Shares | 2026-08-05 | |
| Mid Sculptor Capital LP Registered adviser | $2,265,040 | 0.14% | 92,000 | Put | 2026-08-14 | |
| Mega FMR LLC Holding company | $2,215,504 | 0.14% | 89,988 | Shares | 2026-08-13 | |
| Large PEAK6 LLC Broker-dealer | $2,137,016 | 0.13% | 86,800 | Call | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $2,033,612 | 0.13% | 82,600 | Call | 2026-08-14 | |
| Mid Sculptor Capital LP Registered adviser | $1,873,582 | 0.12% | 76,100 | Call | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $1,749,274 | 0.11% | 71,051 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $1,624,942 | 0.10% | 66,001 | Shares | 2026-08-14 | |
| Large EXCHANGE TRADED CONCEPTS, LLC Registered adviser | $1,598,108 | 0.10% | 64,911 | Shares | 2026-08-11 | |
| Small Diametric Capital, LP | $1,539,143 | 0.10% | 62,516 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $1,482,124 | 0.09% | 60,200 | Put | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $1,400,209 | 0.09% | 56,873 | Shares | 2026-08-06 | |
| Large Walleye Capital LLC Registered adviser | $1,329,652 | 0.08% | 54,007 | Shares | 2026-08-03 | |
| Mid SEVEN GRAND MANAGERS, LLC Registered adviser | $1,231,000 | 0.08% | 50,000 | Shares | 2026-08-14 | |
| Mega Mitsubishi UFJ Asset Management Co., Ltd. | $1,162,064 | 0.07% | 47,200 | Shares | 2026-08-07 | |
| Large Daiwa Securities Group Inc. | $1,147,168 | 0.07% | 46,595 | Shares | 2026-07-31 | |
| Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Benefit plan | $1,125,872 | 0.07% | 45,730 | Shares | 2026-08-17 | |
| Small Ironwood Financial, llc Registered adviser | $1,104,916 | 0.07% | 127,736 | Shares | 2026-10-20 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,100,514 | 0.07% | 44,700 | Put | 2026-09-02 | |
| Small Canal Insurance CO | $1,038,000 | 0.06% | 120,000 | Shares | 2026-10-20 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $1,016,978 | 0.06% | 41,307 | Shares | 2026-08-14 | |
| Mega ROYAL BANK OF CANADA Bank | $924,849 | 0.06% | 37,565 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $909,832 | 0.06% | 36,955 | Shares | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $907,000 | 0.06% | 36,840 | Shares | 2026-08-14 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $899,614 | 0.06% | 36,540 | Shares | 2026-08-11 | |
| Mega JPMORGAN CHASE & CO Bank | $854,189 | 0.05% | 34,695 | Shares | 2026-08-12 | |
| Large MARSHALL WACE, LLP Exempt adviser | $800,470 | 0.05% | 32,513 | Shares | 2026-08-13 | |
| Large Cetera Investment Advisers Registered adviser | $776,071 | 0.05% | 31,522 | Shares | 2026-08-12 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $736,925 | 0.05% | 29,932 | Shares | 2026-08-13 | |
| Mega LPL Financial LLC Broker-dealer | $696,253 | 0.04% | 28,280 | Shares | 2026-08-07 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $685,418 | 0.04% | 27,840 | Shares | 2026-08-14 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $677,296 | 0.04% | 27,510 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $671,707 | 0.04% | 27,283 | Shares | 2026-09-02 | |
| Large FRED ALGER MANAGEMENT, LLC Registered adviser | $662,327 | 0.04% | 26,902 | Shares | 2026-08-14 | |
| Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser | $646,692 | 0.04% | 26,267 | Shares | 2026-08-03 | |
| Mid Longaeva Partners L.P. | $623,649 | 0.04% | 25,331 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC Bank | $617,246 | 0.04% | 25,071 | Shares | 2026-08-03 | |
| Large Squarepoint Ops LLC Registered adviser | $577,609 | 0.04% | 23,461 | Shares | 2026-08-14 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $566,407 | 0.04% | 23,006 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $546,440 | 0.03% | 22,195 | Shares | 2026-08-12 | |
| Mid Hilltop Holdings Inc. Bank | $474,501 | 0.03% | 19,273 | Shares | 2026-08-13 | |
| Mega DEUTSCHE BANK AG\ Non-US | $468,247 | 0.03% | 19,019 | Shares | 2026-08-07 |
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