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Disclosery

ATRO ASTRONICS CORP

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Stock (common), issuer CIK 8063

271 managers (277 13F filers) reported a position in ATRO shares at 2025-12-31, 30,858,089 shares in all. 67 filers opened a position and 21 filers sold out during the quarter.

Managers
271
13F filers
277
New
67
Added
98
Reduced
74
Sold out
21
Shares held by filers
30,858,089

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.2,798,368$152M<0.01%+532,27713F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC1,975,693$107M<0.01%+39,52713F-HRTimelineGroup
Capital International Investorsin group Capital International Investo…1,849,886$100M0.02%+442,88613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,832,179$99.4M<0.01%+379,81113F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC1,764,235$95.7M0.05%+1,225,22913F-HRTimelineGroup
NEXT CENTURY GROWTH INVESTORS LLC1,067,612$57.9M4.02%-146,67513F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC756,386$41M<0.01%+7,96813F-HRTimelineGroup
Driehaus Capital Management LLC666,498$36.2M0.25%+405,69313F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP639,742$34.7M0.01%-37,42113F-HRTimelineGroup
ACK Asset Management LLC597,469$32.4M4.07%-632,53113F-HRTimeline
Private Capital Management, LLC555,434$30.1M2.86%-5,82313F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY551,766$29.9M<0.01%+53,60813F-HR/ATimelineGroup
ROYCE & ASSOCIATES LP520,597$28.2M0.29%-84,18013F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.497,260$27M0.04%new13F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.493,424$26.8M0.02%-388,63713F-HRTimelineGroup
Senator Investment Group LP459,005$24.9M1%-162,68913F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Luxor Capital Group, LP453,305$24.6M3.66%-702,09313F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS444,436$24.1M0.02%-11,00813F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC435,815$23.7M0.01%+423,53213F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\415,352$22.5M0.01%-2,11013F-HRTimelineGroup
Nuveen, LLCin group TIAA403,782$21.9M0.01%-62,50313F-HRTimelineGroup
EMERALD ADVISERS, LLCgroup of 2 filers holding399,446$21.7MnewTimeline
HENNESSY ADVISORS INC390,900$21.2M0.75%-25,40013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP385,518$20.9M0.02%-88,40413F-HRTimelineGroup
CONGRUENCE CAPITAL, LLC362,430$19.7M7.23%13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC360,594$19.6M0.01%+14,09213F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding331,374$18M+217,061Timeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC315,800$17.1M0.01%+165,31213F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC314,670$17.1M<0.01%+104,84213F-HR/ATimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co292,854$15.9M<0.01%+5,33013F-HRTimelineGroup
SG Capital Management LLC291,349$15.8M1.73%+36,64213F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD288,400$15.6M0.01%+18,80013F-HRTimeline
NEEDHAM INVESTMENT MANAGEMENT LLCin group NEEDHAM INVESTMENT MANAGEMENT…272,500$14.8M0.93%013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP261,067$14.2M<0.01%-8,47013F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC258,229$14M0.01%+2,99813F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC255,844$13.9M<0.01%-154,40213F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP243,478$13.2M0.01%+226,40813F-HRTimelineGroup
First Eagle Investment Management, LLCin group First Eagle Investment Manage…230,326$12.5M0.02%-6,00013F-HRTimelineGroup
CASPIAN CAPITAL LP227,724$12.4M8.17%13F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC212,081$11.5M0.04%+31,12713F-HRTimeline
Invesco Ltd.in group Invesco Ltd.205,672$11.2M<0.01%+79,46913F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA188,849$10.2M<0.01%+121,21713F-HRTimelineGroup
Atom Investors LP188,492$10.2M0.81%new13F-HRTimeline
Connor, Clark & Lunn Investment Managem…158,365$8.59M0.02%-51,54713F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC155,327$8.42M0.01%+53,77413F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC148,309$8.12M<0.01%+142,10713F-HR/ATimelineGroup
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC147,144$7.98M0.03%new13F-HRTimelineGroup
Advisors Asset Management, Inc.145,941$7.92M0.13%+5,92813F-HR/ATimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp135,786$7.37M<0.01%+45613F-HRTimelineGroup
TORONTO DOMINION BANKin group TORONTO DOMINION BANK128,550$6.97M0.01%new13F-HRTimelineGroup
Informed Momentum Co LLC126,159$6.84M0.76%-2,51513F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/109,772$5.95M<0.01%+74,86013F-HRTimelineGroup
KENNEDY CAPITAL MANAGEMENT LLC109,286$5.93M0.13%+61,19313F-HRTimeline
Minerva Advisors LLC102,244$5.55M3.7%-92,79713F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…100,000$5.42M0.03%new13F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL96,386$5.23M0.03%+90,26713F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND91,845$4.98M0.01%-3,56813F-HRTimeline
Trexquant Investment LP91,231$4.95M0.04%-45,28713F-HRTimeline
Candelo Capital Management LP83,642$4.54M4.14%new13F-HRTimeline
PDT Partners, LLC82,900$4.5M0.29%-27,48613F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC82,820$4.49M0.01%-53,75513F-HRTimelineGroup
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …78,755$4.28M<0.01%-13,43013F-HRTimelineGroup
Assenagon Asset Management S.A.77,792$4.22M0.01%-6,86413F-HRTimeline
Teton Advisors, LLC77,000$4.18M2.9%-33,00013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources74,767$4.06M<0.01%+2,34213F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding73,966$4.01M+25,506Timeline
WHITE PINE CAPITAL LLC70,843$3.84M1.06%-1,15813F-HRTimeline
325 CAPITAL LLCin group 325 CAPITAL LLC70,000$3.8M1.33%-1,290,67513F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc68,341$3.71M<0.01%-3,52513F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC63,882$3.46M0.01%-93,14113F-HRTimelineGroup
GAMCO Investors (Gabelli)group of 2 filers holding61,363$3.33M-461Timeline
Fisher Asset Management, LLC60,641$3.29M<0.01%-4,63813F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO59,385$3.22M<0.01%+39613F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC59,262$3.21M<0.01%-14,23413F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD57,444$3.12M0.01%+3,92313F-HRTimeline
RHUMBLINE ADVISERS55,804$3.03M<0.01%-6,18113F-HRTimeline
CAXTON ASSOCIATES LLP53,835$2.92M0.06%+58813F-HRTimeline
POLEN CAPITAL MANAGEMENT LLC53,691$2.91M0.01%-30213F-HRTimeline
SummitTX Capital, L.P.53,446$2.9M0.09%new13F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC53,020$2.88M<0.01%-111,58013F-HRTimeline
Swiss National Bank52,100$2.83M<0.01%+1,30013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC51,721$2.81M<0.01%+8,63713F-HRTimelineGroup
Hennion & Walsh Asset Management, Inc.50,805$2.76M0.1%+6,63913F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN48,653$2.64M<0.01%+29,46013F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding47,763$2.59M+26,142Timeline
MARTINGALE ASSET MANAGEMENT L P44,238$2.4M0.06%+3,11113F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…43,168$2.34M<0.01%+40,24013F-HRTimelineGroup
Qube Research & Technologies Ltd43,200$2.34M<0.01%+13,56513F-HRTimeline
SG Americas Securities, LLC42,023$2.28M<0.01%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding41,203$2.23M-29,699Timeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.41,010$2.22M<0.01%+87613F-HRTimelineGroup
HRT FINANCIAL LP39,713$2.15M0.01%-72,12513F-HRTimeline
Engineers Gate Manager LP38,002$2.06M0.02%-37,62613F-HRTimeline
Verition Fund Management LLC36,800$2M0.01%-13,28013F-HRTimeline
PANAGORA ASSET MANAGEMENT INC35,664$1.93M0.01%+12,93213F-HRTimeline
CAPITAL FUND MANAGEMENT S.A.35,044$1.9M0.02%new13F-HRTimeline
ZACKS INVESTMENT MANAGEMENT33,019$1.79M0.01%+1,55213F-HRTimeline
ALLIANCEBERNSTEIN L.P.30,050$1.63M<0.01%013F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A30,000$1.63M<0.01%new13F-HRTimelineGroup
IRONWOOD INVESTMENT MANAGEMENT LLC29,793$1.62M0.68%-7313F-HRTimeline
Wealthspire Advisors, LLC29,434$1.6M0.01%+6,34013F-HRTimeline
OP Asset Management Ltd29,020$1.57M0.02%new13F-HR/ATimeline
Skylands Capital, LLC28,800$1.56M0.21%-10,60013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO28,032$1.52M<0.01%+4,41313F-HRTimelineGroup
Creative Planningin group Creative Planning26,594$1.44M<0.01%+2,26313F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC25,919$1.41M<0.01%+7,35513F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…25,893$1.4M<0.01%-113F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT25,860$1.4M0.02%new13F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al25,650$1.39M0.01%+8,25013F-HRTimeline
Gotham Asset Management, LLC25,488$1.38M0.01%-5,98013F-HRTimeline
Ellsworth Advisors, LLC18,842$1.36M0.27%+12413F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP24,541$1.33M0.06%new13F-HRTimeline
CAPTRUST FINANCIAL ADVISORS24,442$1.33M<0.01%+1,72213F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC25,653$1.26M<0.01%+7413F-HRTimeline
Quantbot Technologies LP22,678$1.23M0.04%+17,21713F-HRTimeline
Schonfeld Strategic Advisors LLC22,500$1.22M0.01%-440,60913F-HRTimeline
GLOBEFLEX CAPITAL L P21,590$1.17M0.18%-14,03813F-HRTimeline
Calamos Advisors LLCin group Calamos Advisors LLC19,720$1.07M<0.01%new13F-HRTimelineGroup
SANDLER CAPITAL MANAGEMENT19,094$1.04M0.47%new13F-HRTimeline
Y-Intercept (Hong Kong) Ltd18,834$1.02M0.02%-14,22713F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd18,421$999K0.03%+1,09613F-HRTimelineGroup
NewEdge Advisors, LLC18,331$994K<0.01%-87613F-HRTimeline
Lisanti Capital Growth, LLC18,270$991K0.23%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/17,889$971K<0.01%+1,42213F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…17,465$947K<0.01%013F-HRTimelineGroup
PIER 88 INVESTMENT PARTNERS LLC17,330$940K0.21%+2,90013F-HRTimeline
LPL Financial LLC17,151$930K<0.01%+7,97713F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC16,738$908K<0.01%new13F-HRTimelineGroup
IEQ CAPITAL, LLC16,702$906K<0.01%-4713F-HRTimeline
HUNTER ASSOCIATES INVESTMENT MANAGEMENT…16,535$896K0.12%+10013F-HRTimeline
Kingdom Financial Group LLC.15,408$836K0.26%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC15,402$835K0.01%+4,85413F-HRTimeline
Diametric Capital, LP14,640$794K0.21%-3,48213F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…13,259$789K<0.01%+6,23013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …14,294$775K<0.01%-83913F-HRTimelineGroup
Harvest Investment Services, LLC14,287$775K0.15%new13F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…14,270$774K<0.01%+27113F-HRTimelineGroup
Campbell & CO Investment Adviser LLC13,494$732K0.04%+7,88713F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson13,400$727K<0.01%013F-HRTimelineGroup
EQUITABLE TRUST CO13,340$724K0.03%013F-HRTimeline
Empirical Asset Management, LLC13,110$711K0.2%-1,51513F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…12,425$674K<0.01%+7,19713F-HRTimeline
CWM, LLCin group CWM, LLC12,168$660K<0.01%+89713F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC12,045$653K0.02%new13F-HRTimeline
Cambridge Investment Research Advisors,…11,168$606K<0.01%+6,62713F-HRTimeline
Cetera Investment Advisers10,634$577K<0.01%+3,97213F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC10,523$571K<0.01%new13F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP10,478$568K<0.01%new13F-HR/ATimelineGroup
Man Group plcin group Man Group plc10,071$546K<0.01%new13F-HRTimelineGroup
Private Advisor Group, LLC9,902$537K<0.01%new13F-HRTimeline
PETRA FINANCIAL ADVISORS INC9,792$531K0.31%new13F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC9,564$519K<0.01%+3,60013F-HRTimelineGroup
MARK SHEPTOFF FINANCIAL PLANNING, LLC9,050$491K0.23%+10013F-HRTimeline
State of Wyoming8,482$460K0.05%+4,28613F-HRTimeline
ARCADIA INVESTMENT MANAGEMENT CORP/MI8,451$458K0.07%013F-HRTimeline
PharVision Advisers, LLC8,409$456K0.23%new13F-HRTimeline
Police & Firemen's Retirement System of…8,383$455K<0.01%013F-HRTimeline
ALGERT GLOBAL LLC8,290$450K0.01%new13F-HR/ATimeline
Mariner, LLCin group Mariner, LLC8,278$449K<0.01%+2,76813F-HRTimelineGroup
Quantinno Capital Management LP7,958$432K<0.01%+2,32713F-HRTimeline
First Bank & Trust7,777$422K0.07%-7613F-HRTimeline
RiverPark Advisors, LLCin group RiverPark Advisors, LLC7,475$405K0.12%-51213F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…7,441$404K<0.01%013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM7,354$399K<0.01%-37613F-HRTimeline
Rafferty Asset Management, LLC7,269$394K<0.01%new13F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC7,019$381K<0.01%+1,09013F-HRTimeline
AXQ CAPITAL, LP6,990$379K0.09%-1,07413F-HRTimeline
ARS Investment Partners, LLC6,956$377K0.02%+2,47413F-HRTimeline
Integrated Quantitative Investments LLC6,822$370K0.08%new13F-HRTimeline
Legato Capital Management LLC6,750$366K0.03%new13F-HRTimeline
Verdence Capital Advisors LLC6,552$355K0.02%013F-HRTimeline
Versor Investments LP6,506$353K0.05%new13F-HRTimeline
GSA CAPITAL PARTNERS LLP6,385$346K0.03%new13F-HRTimeline
GWN SECURITIES INC.6,353$345K0.07%+1,63013F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC6,311$342K0.01%new13F-HRTimelineGroup
Elyxium Wealth, LLC6,250$339K0.1%013F-HRTimeline
Empower Advisory Group, LLCin group Empower Annuity Insurance Co …6,219$337K<0.01%013F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC5,792$314K<0.01%-88513F-HRTimelineGroup
KLP KAPITALFORVALTNING AS5,700$309K<0.01%+50013F-HRTimeline
West Branch Capital LLC5,700$309K0.08%013F-HRTimeline
ProShare Advisors LLC5,614$305K<0.01%+43813F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC5,467$297K<0.01%013F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV5,192$282K<0.01%new13F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…5,106$277K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.4,943$268K<0.01%+2,11713F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP4,772$259K<0.01%new13F-HRTimelineGroup
MANGROVE PARTNERS IM, LLC4,732$257K0.02%new13F-HRTimeline
FULTON BREAKEFIELD BROENNIMAN LLC4,604$250K0.02%new13F-HRTimeline
AlphaQuest LLC4,575$248K0.01%-3,12313F-HRTimeline
Scientech Research LLC4,498$244K0.15%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…4,377$237K<0.01%-7,67613F-HRTimelineGroup
FMR LLCin group FMR LLC4,345$236K<0.01%+1,97713F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…4,251$231K<0.01%new13F-HRTimelineGroup
DDD Partners, LLC4,189$227K0.01%-2,90813F-HRTimeline
DIVERSIFIED TRUST CO4,115$223K<0.01%new13F-HRTimeline
EARNEST PARTNERS LLC4,083$221K<0.01%-125,53813F-HRTimeline
SkyView Investment Advisors, LLC4,000$217K0.03%new13F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co3,945$214K<0.01%013F-HRTimelineGroup
FORTRESS PRIVATE LEDGER, LLC3,869$210K0.07%new13F-HRTimeline
KFA Private Wealth Group, LLC3,797$206K0.05%new13F-HRTimeline