Who owns Astronics (ATROB)
Which tracked institutional funds hold ATROB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ATROB company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
126 tracked funds added or opened ATROB while 54 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ATROB’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes ATROB more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ATROB divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 298 tracked filers holding ATROB, 174 increased or opened the position and 151 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ATROB between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 22
- Ophir Asset Management Pty Ltd$37M
- WESTWOOD HOLDINGS GROUP INC$35M
- AEGON ASSET MANAGEMENT UK Plc$20M
- NORGES BANK$15M
- Nicholas Investment Partners, LP$12M
- SG Capital Management LLC$7M
Full exits 24
- HENNESSY ADVISORS INC$25M
- ACADIAN ASSET MANAGEMENT LLC$15M
- CANADA PENSION PLAN INVESTMENT BOARD$14M
- Walleye Capital LLC$7M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$7M
- Hudson Bay Capital Management LP$7M
Largest adds
- BlackRock, Inc.$60M
- AMERIPRISE FINANCIAL INC$28M
- Pertento Partners LLP$26M
- GEODE CAPITAL MANAGEMENT, LLC$25M
- VANGUARD CAPITAL MANAGEMENT LLC$23M
- Capital International Investors$22M
Largest trims
- BNP PARIBAS FINANCIAL MARKETS$13M
- DEUTSCHE BANK AG\$13M
- Private Capital Management, LLC$12M
- MARSHALL WACE, LLP$12M
- Point72 Asset Management, L.P.$11M
- D. E. Shaw & Co., Inc.$8M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 3,056,789 | $248M | 10.5% | 2026-Q2 |
| STATE STREET CORP trimmed | 2,051,242 | $167M | 7.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 1,436,706 | $117M | 4.9% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,419,352 | $115M | 4.9% | 2026-Q2 |
| Capital International Investors added | 1,324,626 | $108M | 4.6% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,041,399 | $85M | 3.6% | 2026-Q2 |
| ABSOLUTE INVESTMENT ADVISERS, LLC new | 1,000,000 | $4M | 0.2% | 2026-Q2 |
| Pertento Partners LLP added | 993,637 | $81M | 3.4% | 2026-Q2 |
| NEXT CENTURY GROWTH INVESTORS LLC trimmed | 743,086 | $60M | 2.6% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 709,845 | $58M | 2.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 676,931 | $55M | 2.3% | 2026-Q2 |
| Capital World Investors added | 576,671 | $47M | 2.0% | 2026-Q2 |
| EMERALD ADVISERS, LLC added | 513,984 | $42M | 1.8% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 484,353 | $39M | 1.7% | 2026-Q2 |
| WESTWOOD HOLDINGS GROUP INC new | 430,281 | $35M | 1.5% | 2026-Q2 |
| MORGAN STANLEY trimmed | 422,557 | $34M | 1.5% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 421,741 | $34M | 1.5% | 2026-Q2 |
| Nuveen, LLC added | 413,383 | $34M | 1.4% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 406,571 | $33M | 1.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 400,061 | $33M | 1.4% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 393,413 | $32M | 1.4% | 2026-Q2 |
| Ophir Asset Management Pty Ltd new | 385,791 | $31M | 1.3% | 2026-Q2 |
| UBS Group AG added | 347,555 | $28M | 1.2% | 2026-Q2 |
| Fisher Asset Management, LLC trimmed | 333,965 | $27M | 1.1% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 330,981 | $27M | 1.1% | 2026-Q2 |
| EMERALD MUTUAL FUND ADVISERS TRUST added | 327,295 | $27M | 1.1% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 325,117 | $26M | 1.1% | 2026-Q2 |
| FRED ALGER MANAGEMENT, LLC trimmed | 323,900 | $26M | 1.1% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 295,980 | $24M | 1.0% | 2026-Q2 |
| CASPIAN CAPITAL LP added | 285,965 | $23M | 1.0% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 281,518 | $23M | 1.0% | 2026-Q2 |
| JUPITER ASSET MANAGEMENT LTD trimmed | 280,672 | $23M | 1.0% | 2026-Q2 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 272,500 | $22M | 0.9% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 258,416 | $21M | 0.9% | 2026-Q2 |
| Driehaus Capital Management LLC trimmed | 257,865 | $21M | 0.9% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 254,758 | $21M | 0.9% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 253,603 | $21M | 0.9% | 2026-Q2 |
| AEGON ASSET MANAGEMENT UK Plc new | 245,048 | $20M | 0.8% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 231,693 | $19M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 231,255 | $19M | 0.8% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 195,743 | $16M | 0.7% | 2026-Q2 |
| First Eagle Investment Management, LLC added | 192,726 | $16M | 0.7% | 2026-Q2 |
| M&G PLC trimmed | 189,691 | $15M | 0.7% | 2026-Q2 |
| NORGES BANK new | 184,300 | $15M | 0.6% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 172,220 | $14M | 0.6% | 2026-Q2 |
| Invesco Ltd. added | 168,982 | $14M | 0.6% | 2026-Q2 |
| CONGRUENCE CAPITAL, LLC trimmed | 168,856 | $14M | 0.6% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 162,725 | $13M | 0.6% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 148,329 | $12M | 0.5% | 2026-Q2 |
| Nicholas Investment Partners, LP new | 144,186 | $12M | 0.5% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 141,218 | $11M | 0.5% | 2026-Q2 |
| Advisors Asset Management, Inc. added | 139,398 | $11M | 0.5% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 138,811 | $11M | 0.5% | 2026-Q2 |
| PEREGRINE CAPITAL MANAGEMENT LLC added | 129,848 | $11M | 0.4% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 127,482 | $10M | 0.4% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 126,902 | $10M | 0.4% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 123,362 | $10M | 0.4% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 115,903 | $9M | 0.4% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 106,135 | $9M | 0.4% | 2026-Q2 |
| RBF Capital, LLC | 100,372 | $8M | 0.3% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 96,566 | $8M | 0.3% | 2026-Q2 |
| Beacon Harbor Wealth Advisors, Inc. new | 95,359 | $7M | 0.3% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 95,037 | $8M | 0.3% | 2026-Q2 |
| HSBC HOLDINGS PLC trimmed | 93,903 | $7M | 0.3% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 91,478 | $7M | 0.3% | 2026-Q2 |
| SG Capital Management LLC trimmed | 89,151 | $7M | 0.3% | 2026-Q2 |
| Jump Financial, LLC added | 87,921 | $7M | 0.3% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 85,951 | $7M | 0.3% | 2026-Q2 |
| TORONTO DOMINION BANK trimmed | 83,009 | $7M | 0.3% | 2026-Q2 |
| LPL Financial LLC added | 80,102 | $7M | 0.3% | 2026-Q2 |
| Hennion & Walsh Asset Management, Inc. added | 79,689 | $6M | 0.3% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 79,079 | $7M | 0.3% | 2026-Q2 |
| Informed Momentum Co LLC trimmed | 79,042 | $6M | 0.3% | 2026-Q2 |
| NORDEA INVESTMENT MANAGEMENT AB added | 76,774 | $6M | 0.3% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 74,400 | $6M | 0.3% | 2026-Q2 |
| Private Capital Management, LLC trimmed | 73,310 | $6M | 0.3% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 71,342 | $6M | 0.2% | 2026-Q2 |
| BARCLAYS PLC added | 70,544 | $6M | 0.2% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 60,689 | $5M | 0.2% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 59,923 | $5M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 59,200 | $5M | 0.2% | 2026-Q2 |
| CREDIT AGRICOLE S A added | 58,000 | $5M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 57,500 | $5M | 0.2% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 57,139 | $5M | 0.2% | 2026-Q2 |
| Teton Advisors, LLC trimmed | 56,000 | $5M | 0.2% | 2026-Q2 |
| Minerva Advisors LLC trimmed | 55,041 | $4M | 0.2% | 2026-Q2 |
| CAXTON ASSOCIATES LLP trimmed | 54,239 | $4M | 0.2% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 53,654 | $4M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 53,627 | $4M | 0.2% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 53,417 | $4M | 0.2% | 2026-Q2 |
| WHITE PINE CAPITAL LLC added | 50,391 | $4M | 0.2% | 2026-Q2 |
| Trexquant Investment LP trimmed | 47,787 | $4M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 46,733 | $4M | 0.2% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC trimmed | 45,065 | $4M | 0.2% | 2026-Q2 |
| Harvest Investment Services, LLC added | 44,003 | $4M | 0.2% | 2026-Q2 |
| PDT Partners, LLC trimmed | 42,108 | $3M | 0.1% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd added | 41,733 | $3M | 0.1% | 2026-Q2 |
| ZACKS INVESTMENT MANAGEMENT added | 41,030 | $3M | 0.1% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 40,913 | $3M | 0.1% | 2026-Q2 |
| GABELLI FUNDS LLC added | 40,015 | $3M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.