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YSS · York Space Systems Inc.

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$9.13 -0.19 (-2.04%) At close · Aug 26
Market Cap
$1.34B
Shares
137.36M

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.

Holders: 164
Total Value: $1,651,711,447
Total Shares: 67,088,225

Institutional Ownership Trend

2 quarters

Holder Concentration

Across 164 13F filers · Δ vs Mar 31, 2026
Top Holder
28.6%
Mar 2026 → Jun 2026 · range 28.6% – 30.3%
−1.6 pts
Top 5
56.0%
Mar 2026 → Jun 2026 · range 56.0% – 57.4%
−1.5 pts
Top 10
68.1%
Mar 2026 → Jun 2026 · range 66.2% – 68.1%
+1.9 pts
HHI
1,219
Mar 2026 → Jun 2026 · range 1,219 – 1,311
Broadly held−93

Quarterly Activity

vs Mar 31, 2026
New
60
Increased
53
Decreased
42
Sold Out
38
Unchanged
9
Holder count: +22
Institutional value: +18.6%
Shares held: +6.8%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 173
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 2086587 CUSIP 987084100 13F (30d) 143 filings 143 filers Visit website Investor relations