York Space Systems is trading 5.6% down today at $13.91 as investors react to a disclosed stake reduction by major shareholder BlackRock.
- Regulatory filings show BlackRock Portfolio Management LLC sold roughly $3.1 million of stock on July 29–30, 2026.
- The selling pressure from the 10% owner is weighing on sentiment as shares trade near 52-week lows, despite a broadly positive market backdrop.