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ATRO · Astronics Corp

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$77.99 +0.48 (+0.62%)
Market Cap
$3.33B
Shares
43.01M

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: 309
Total Value: $2,677,989,271
Total Shares: 32,988,313

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 309 13F filers · Δ vs Mar 31, 2026
Top Holder
9.3%
Sep 2023 → Jun 2026 · range 7.3% – 11.3%
+0.7 pts
Top 5
28.2%
Sep 2023 → Jun 2026 · range 28.1% – 46.7%
−0.9 pts
Top 10
43.2%
Sep 2023 → Jun 2026 · range 42.1% – 66.6%
+1.1 pts
HHI
274
Sep 2023 → Jun 2026 · range 271 – 559
Broadly held+4

Quarterly Activity

vs Mar 31, 2026
New
60
Increased
43
Decreased
204
Sold Out
46
Unchanged
2
Holder count: +14
Institutional value: +22.0%
Shares held: +0.2%

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 333
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 8063 CUSIP 046433108 13F (30d) 278 filings 273 filers Visit website Investor relations