York Space Systems Inc. (YSS) Stock
5 of the hedge funds AlphaScala tracks reported YSS in 13F filings for the quarter ended Jun 30, 2026; the largest reported position is Blackstone's at $3.69M. Company insiders reported 0 open-market buys and 14 sales on SEC Form 4 in the 90 days to Oct 21, 2026.
Which hedge funds own YSS?
From 13F filings| Fund | Shares Held | Position Value | Change vs prior Q |
|---|---|---|---|
| Blackstone | 150K | $3.69M | n/a |
| Millennium Management Israel Englander | 41K | $1.02M | NEW |
| Marshall Wace | 33K | $800.5K | NEW |
| Citadel Ken Griffin | 27K | $671.7K | -97% |
| Soros Fund Management George Soros (founder) | 11K | $276.9K | NEW |
13F holdings as of Jun 30, 2026
Explore all tracked funds →Are York Space Systems Inc. insiders buying or selling?
SEC Form 4 filings| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Aug 7, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 200.2K | $2.2M |
| Aug 6, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 201.5K | $2.3M |
| Aug 5, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 116.2K | $1.6M |
| Aug 5, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 11.8K | $180K |
| Aug 5, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 116.2K | $1.6M |
| Aug 5, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 11.9K | $182K |
| Aug 4, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 77.7K | $1.2M |
| Aug 4, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 456.3K | $7.1M |
| Aug 4, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 78.1K | $1.2M |
| Aug 4, 26 | Blackrock Portfolio Management Llc | 10%+ Owner | SELL | 468.5K | $7.3M |
SEC Form 4 filings as of Oct 21, 2026
See cluster-buy signals across all tickers →YSS price chart
Powered by TradingViewWhat does York Space Systems Inc. do?
York Space Systems, Inc. is a leading U.S.-based space and defense prime contractor specializing in the design, manufacture, and delivery of mission-critical satellite platforms and integrated space solutions. Founded in 2012 and headquartered in Denver, Colorado, the company provides end-to-end services encompassing spacecraft production, launch coordination, ground segment operations, and on-orbit mission control for national security, government, and commercial clients. York distinguishes itself through proprietary hardware and software that enable scalable, cost-effective satellites—produced at roughly half the cost of competitors—supporting complex requirements across the space ecosystem lifecycle. As the top provider to the U.S. Department of Defense's Proliferated Warfighter Space Architecture, with substantial revenue from Space Development Agency contracts and a $642 million backlog, York excels in rapid deployment, high-volume production, and innovations like Link-16 connectivity from space. Employing around 670 people under CEO Dirk Wallinger, it recently went public via an upsized IPO, trading as YSS, with plans to acquire a key supplier to bolster supply chain resilience. York's vertically integrated model drives efficiency in the evolving satellite industry, emphasizing agility, security, and global connectivity.