Astronics Corporation (ATRO) Ownership
ATRO ownership summary
as of October 18, 2026- Institutions
- 90.3% of shares outstanding
- Insiders
- 1.93% of shares outstanding
- Shares outstanding
- 36.1M
- Float
- 40.3M shares available to trade
- Short interest
- 9.22% 3.3M shares short
- Days to cover
- 5.06 short interest down 2.6% vs prior month
- Institutions 90.35%
- Insiders 1.93%
- Other investors 7.72%
ATRO top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.11% | 3.1M | $188.1M | −333,703 (−9.8%) | June 30, 2026 |
| 2 | State Street Corp | 4.77% | 2.1M | $126.2M | −768,536 (−27.3%) | June 30, 2026 |
| 3 | American Century Companies Inc | 3.34% | 1.4M | $88.4M | −648,382 (−31.1%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 3.30% | 1.4M | $87.3M | −247,327 (−14.8%) | June 30, 2026 |
| 5 | Capital Research & Mgmt Co - Division 3 | 3.08% | 1.3M | $81.5M | −222,110 (−14.4%) | June 30, 2026 |
| 6 | Geode Capital Management, LLC | 2.42% | 1.0M | $64.1M | −23,041 (−2.2%) | June 30, 2026 |
| 7 | Pertento Partners LLP | 2.31% | 994K | $61.1M | +15,237 (+1.6%) | June 30, 2026 |
| 8 | Next Century Growth Investors LLC | 1.73% | 743K | $45.7M | −200,494 (−21.2%) | June 30, 2026 |
| 9 | Ameriprise Financial Inc | 1.65% | 710K | $43.7M | +169,045 (+31.3%) | June 30, 2026 |
| 10 | Dimensional Fund Advisors, Inc. | 1.57% | 677K | $41.7M | −131,581 (−16.3%) | June 30, 2026 |
| 11 | Capital World Investors | 1.34% | 577K | $35.5M | −96,456 (−14.3%) | June 30, 2026 |
| 12 | Emerald Advisers, LLC | 1.20% | 514K | $31.6M | −24,967 (−4.6%) | June 30, 2026 |
| 13 | The Goldman Sachs Group Inc | 1.13% | 484K | $29.8M | −61,712 (−11.3%) | June 30, 2026 |
| 14 | Westwood Holdings Group Inc | 1.00% | 430K | $26.5M | +430,281 (0.0%) | June 30, 2026 |
| 15 | Morgan Stanley - Brokerage Accounts | 0.98% | 423K | $26.0M | −114,492 (−21.3%) | June 30, 2026 |
| 16 | Nuveen, LLC | 0.96% | 413K | $25.4M | −68,134 (−14.1%) | June 30, 2026 |
| 17 | D. E. Shaw & Co LP | 0.95% | 407K | $25.0M | −323,568 (−44.3%) | June 30, 2026 |
| 18 | Vanguard Portfolio Management, LLC | 0.93% | 400K | $24.6M | −39,156 (−8.9%) | June 30, 2026 |
| 19 | Royce & Associates, LP | 0.91% | 393K | $24.2M | −42,647 (−9.8%) | June 30, 2026 |
| 20 | Ophir Asset Management Pty Ltd | 0.90% | 386K | $23.7M | +385,791 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 4 holders added 1.0M shares and 16 cut 3.3M.
ATRO top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | American Funds SMALLCAP World A | 4.30% | 1.8M | $113.8M | −369,977 (−16.7%) | June 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.69% | 1.2M | $71.2M | −1,786 (−0.2%) | August 31, 2026 |
| 3 | Stt Strt® SPDR® S&P® Arspc & Dfnc ETF | 2.39% | 1.0M | $63.3M | +2,146 (+0.2%) | September 30, 2026 |
| 4 | iShares Russell 2000 ETF | 1.93% | 832K | $51.2M | −9,600 (−1.1%) | September 30, 2026 |
| 5 | American Century Small Cap Growth Inv | 1.79% | 768K | $47.3M | −89,318 (−10.4%) | June 30, 2026 |
| 6 | Xtrackers S&P 500 Swap ETF 1C | 0.90% | 386K | $23.8M | −2,848 (−0.7%) | December 31, 2025 |
| 7 | Fidelity Small Cap Index | 0.82% | 351K | $21.6M | +11,692 (+3.4%) | July 31, 2026 |
| 8 | Columbia Acorn Inst | 0.79% | 340K | $20.9M | — | August 31, 2026 |
| 9 | iShares US Aerospace & Defense ETF | 0.79% | 340K | $20.9M | −580 (−0.2%) | September 30, 2026 |
| 10 | iShares Russell 2000 Growth ETF | 0.70% | 301K | $18.5M | −381 (−0.1%) | September 30, 2026 |
| 11 | Alger Small Cap Focus I | 0.66% | 282K | $17.4M | — | July 31, 2026 |
| 12 | Emerald Growth A | 0.65% | 279K | $17.1M | +79,717 (+40.1%) | August 31, 2026 |
| 13 | Needham Aggressive Growth Retail | 0.63% | 272K | $16.8M | −54,500 (−16.7%) | June 30, 2026 |
| 14 | Nuveen Quant Small Cap Equity R6 | 0.60% | 259K | $15.9M | — | August 31, 2026 |
| 15 | CT (Lux) Glb Smlr Coms IE | 0.55% | 239K | $14.7M | +69,069 (+40.7%) | June 30, 2026 |
| 16 | Schwab US Small-Cap ETF™ | 0.44% | 190K | $11.7M | +126 (+0.1%) | September 30, 2026 |
| 17 | Fidelity Extended Market Index | 0.43% | 186K | $11.5M | −1,895 (−1.0%) | August 31, 2026 |
| 18 | Vanguard Russell 2000 ETF | 0.43% | 185K | $11.4M | +4,367 (+2.4%) | August 31, 2026 |
| 19 | Columbia Small Cap Value Discv A | 0.39% | 170K | $10.4M | +1,800 (+1.1%) | December 31, 2025 |
| 20 | First Eagle Small Cap Opportunity I | 0.39% | 170K | $10.4M | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ATRO insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-09-05 | James Mulato | Sell | $38.16 | 1,129 | $43,083 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ATRO shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ATRO
Institutional investors own 90.3% of Astronics's shares and insiders 1.93%. The largest holder is BlackRock Inc with 7.11% of the shares (3.1M), as of June 30, 2026. Among the top 20 institutions, 4 added shares and 16 reduced their stake in the latest filings. Short interest is 9.22% of the float, or 5.06 days of average trading volume. The share count rose 11.6% since 2014.
Related: ATRO analyst forecast, ATRO key metrics. See the ATRO stock overview for the latest quote and news.
ATRO ownership FAQ
Who owns the most Astronics stock?
The largest shareholders of Astronics are BlackRock Inc (7.11%), State Street Corp (4.77%), American Century Companies Inc (3.34%), Vanguard Capital Management, LLC (3.30%), Capital Research & Mgmt Co - Division 3 (3.08%).
What percentage of Astronics is owned by institutions?
Institutions hold 90.3% of Astronics's shares outstanding; insiders hold 1.93%.
Which funds own Astronics?
The largest fund holders of Astronics are American Funds SMALLCAP World A (4.30%), Vanguard MStar Total Stk Mkt Idx Invest (2.69%), Stt Strt® SPDR® S&P® Arspc & Dfnc ETF (2.39%), iShares Russell 2000 ETF (1.93%), American Century Small Cap Growth Inv (1.79%).
What is Astronics's short interest?
3.3M shares of Astronics were sold short, 9.22% of the float; at the average daily volume it would take 5.06 days to cover.
Are insiders buying or selling Astronics?
Of the latest 1 reported insider transactions in Astronics (since September 5, 2025), 0 were purchases and 1 were sales.
How many shares of Astronics are outstanding?
Astronics has 36.1M shares outstanding, of which 40.3M are in the public float.