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Disclosery

ATRO ASTRONICS CORP

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Stock (common), issuer CIK 8063

283 managers (294 13F filers) reported a position in ATRO shares at 2026-03-31, 31,155,305 shares in all. 49 filers opened a position and 35 filers sold out during the quarter.

Managers
283
13F filers
294
New
49
Added
107
Reduced
95
Sold out
35
Shares held by filers
31,155,305

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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.2,825,410$189M<0.01%+27,04213F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP2,349,815$157M0.01%+517,63613F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding2,011,396$134MnewTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC1,737,573$116M0.06%-26,66213F-HRTimelineGroup
Capital International Investorsin group Capital International Investo…1,288,947$86M0.02%-560,93913F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC887,033$59.2M<0.01%+130,64713F-HRTimelineGroup
Pertento Partners LLPin group Pertento Partners LLP815,333$54.4M5.77%new13F-HRTimelineGroup
NEXT CENTURY GROWTH INVESTORS LLC786,317$52.5M3.8%-281,29513F-HRTimeline
EMERALD ADVISERS, LLCgroup of 2 filers holding728,285$48.6M+328,839Timeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP673,760$45M0.01%+34,01813F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.608,449$40.6M0.03%+115,02513F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.567,240$37.9M0.07%+69,98013F-HRTimelineGroup
Capital World Investors560,939$37.4M0.01%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC492,812$31.5M0.01%+56,99713F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC455,054$30.4M<0.01%+140,38413F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC450,667$30.1M0.01%+194,82313F-HR/ATimelineGroup
MORGAN STANLEYin group MORGAN STANLEY447,541$29.9M<0.01%-104,22513F-HRTimelineGroup
Nuveen, LLCin group TIAA401,264$26.8M0.01%-2,51813F-HRTimelineGroup
HENNESSY ADVISORS INC377,800$25.2M0.91%-13,10013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS371,030$24.8M0.02%-73,40613F-HRTimelineGroup
ROYCE & ASSOCIATES LP363,383$24.2M0.24%-157,21413F-HRTimeline
Fisher Asset Management, LLC348,842$23.3M0.01%+288,20113F-HRTimeline
UBS Group AGgroup of 2 filers holding340,088$22.7M+8,714Timeline
Driehaus Capital Management LLC326,471$21.8M0.16%-340,02713F-HRTimeline
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC324,954$21.7M0.1%+177,81013F-HRTimelineGroup
Private Capital Management, LLC322,543$21.5M2.19%-232,89113F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co288,762$19.3M<0.01%-4,09213F-HRTimelineGroup
JUPITER ASSET MANAGEMENT LTDin group JUPITER ASSET MANAGEMENT LTD280,976$18.7M0.1%new13F-HRTimelineGroup
NEEDHAM INVESTMENT MANAGEMENT LLCin group NEEDHAM INVESTMENT MANAGEMENT…272,500$18.2M0.93%013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP268,910$17.9M<0.01%+7,84313F-HRTimelineGroup
CASPIAN CAPITAL LP267,724$17.9M17.38%+40,00013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\261,555$17.5M0.01%-153,79713F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP253,492$16.9M0.01%+10,01413F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP251,213$16.8M0.02%-134,30513F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC247,301$16.5M0.01%-10,92813F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC229,285$15.3M0.02%+73,95813F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC222,920$14.9M0.02%+169,90013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC220,023$14.7M0.01%-140,57113F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP216,727$14.5M0.01%+183,42413F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD212,800$14.2M0.01%-75,60013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC201,091$13.4M0.01%+190,56813F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/199,722$13.3M<0.01%+89,95013F-HRTimelineGroup
M&G PLCin group M&G PLC198,707$13.3M0.07%new13F-HRTimelineGroup
First Eagle Investment Management, LLCin group First Eagle Investment Manage…192,326$12.8M0.02%-38,00013F-HR/ATimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA183,464$12.2M<0.01%-5,38513F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.179,027$11.9M<0.01%-26,64513F-HRTimelineGroup
CONGRUENCE CAPITAL, LLC175,366$11.7M3.92%-187,06413F-HRTimeline
Qube Research & Technologies Ltd166,759$11.1M0.02%+123,55913F-HRTimeline
KENNEDY CAPITAL MANAGEMENT LLC143,717$9.59M0.2%+34,43113F-HRTimeline
Connor, Clark & Lunn Investment Managem…142,499$9.51M0.02%-15,86613F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC144,233$9.49M0.01%-4,07613F-HRTimelineGroup
Trexquant Investment LP138,037$9.21M0.07%+46,80613F-HRTimeline
Advisors Asset Management, Inc.135,131$9.02M0.15%-10,81013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN120,649$8.05M<0.01%+71,99613F-HR/ATimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp115,298$7.69M<0.01%-20,48813F-HRTimelineGroup
PEREGRINE CAPITAL MANAGEMENT LLC113,520$7.58M0.28%new13F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC110,412$7.37M0.05%new13F-HR/ATimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC102,228$6.82M0.03%-109,85313F-HRTimeline
RBF Capital, LLC100,372$6.7M0.33%new13F-HR/ATimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…100,000$6.67M0.04%013F-HRTimelineGroup
Informed Momentum Co LLC99,453$6.64M0.77%-26,70613F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC96,424$6.43M<0.01%-219,37613F-HRTimelineGroup
TORONTO DOMINION BANKin group TORONTO DOMINION BANK94,375$6.3M0.01%-34,17513F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources89,010$5.94M<0.01%+14,24313F-HRTimelineGroup
ALGERT GLOBAL LLC86,968$5.8M0.09%+78,67813F-HR/ATimeline
HRT FINANCIAL LP78,376$5.23M0.01%+38,66313F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC76,475$5.1M<0.01%+2,50913F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC75,445$5.03M0.01%-7,37513F-HRTimelineGroup
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …75,230$4.88M<0.01%-3,52513F-HRTimelineGroup
LPL Financial LLC72,914$4.87M<0.01%+55,76313F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND72,189$4.82M0.01%-19,65613F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO71,039$4.74M<0.01%+43,00713F-HRTimelineGroup
Minerva Advisors LLC70,340$4.69M3.03%-31,90413F-HRTimeline
Hennion & Walsh Asset Management, Inc.66,076$4.41M0.15%+15,27113F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding63,998$4.27M+16,235Timeline
GAMCO Investors (Gabelli)group of 2 filers holding63,778$4.26M+2,415Timeline
Legal & General Group Plcin group Legal & General Group Plc63,343$4.23M<0.01%-4,99813F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…60,455$3.97M<0.01%+17,28713F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL58,966$3.93M0.02%-37,42013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC57,521$3.84M<0.01%+5,80013F-HRTimelineGroup
Teton Advisors, LLC57,000$3.8M2.68%-20,00013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO60,917$3.8M<0.01%+1,53213F-HR/ATimelineGroup
RHUMBLINE ADVISERS55,395$3.7M<0.01%-40913F-HRTimeline
CAXTON ASSOCIATES LLP55,334$3.69M0.09%+1,49913F-HRTimeline
WHITE PINE CAPITAL LLC52,349$3.49M0.95%-18,49413F-HR/ATimeline
Swiss National Bank52,100$3.48M<0.01%013F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD51,608$3.44M0.01%-5,83613F-HRTimeline
PDT Partners, LLC49,208$3.28M0.19%-33,69213F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC44,669$2.98M<0.01%-14,59313F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.42,947$2.87M<0.01%+1,93713F-HRTimelineGroup
POLEN CAPITAL MANAGEMENT LLC42,410$2.83M0.02%-11,28113F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …40,961$2.73M<0.01%+40,58513F-HRTimelineGroup
Lisanti Capital Growth, LLC40,820$2.72M0.69%+22,55013F-HRTimeline
NOMURA ASSET MANAGEMENT CO LTDgroup of 3 filers holding40,491$2.7M+36,775Timeline
ZACKS INVESTMENT MANAGEMENT39,076$2.61M0.02%+6,05713F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …38,993$2.6M<0.01%new13F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC36,796$2.46M0.02%new13F-HRTimelineGroup
Harvest Investment Services, LLC36,143$2.41M0.44%+21,85613F-HRTimeline
PANAGORA ASSET MANAGEMENT INC35,745$2.39M0.01%+8113F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…34,460$2.3M<0.01%+8,56713F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P32,848$2.19M0.05%-11,39013F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A30,000$2M0.01%013F-HRTimelineGroup
Wealthspire Advisors, LLC29,434$1.96M0.02%013F-HRTimeline
IRONWOOD INVESTMENT MANAGEMENT LLC29,407$1.96M0.82%-38613F-HRTimeline
Creative Planningin group Creative Planning29,124$1.94M<0.01%+2,53013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.29,094$1.94M<0.01%+24,15113F-HRTimelineGroup
Skylands Capital, LLC28,800$1.92M0.25%013F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP28,638$1.91M0.17%+4,09713F-HRTimeline
CITIGROUP INCin group CITIGROUP INC27,966$1.87M<0.01%+2,04713F-HRTimelineGroup
CAPITAL FUND MANAGEMENT S.A.27,086$1.81M0.02%-7,95813F-HRTimeline
Y-Intercept (Hong Kong) Ltd26,683$1.78M0.03%+7,84913F-HRTimeline
ALLIANCEBERNSTEIN L.P.32,050$1.74M<0.01%+2,00013F-HRTimeline
Gotham Asset Management, LLC23,277$1.55M<0.01%-2,21113F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/22,659$1.51M<0.01%+4,77013F-HRTimeline
GLOBEFLEX CAPITAL L P21,590$1.44M0.22%013F-HRTimeline
Senator Investment Group LP21,531$1.44M0.07%-437,47413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Calamos Advisors LLCin group Calamos Advisors LLC21,514$1.44M0.01%+1,79413F-HRTimelineGroup
OP Asset Management Ltd20,819$1.39M0.01%-8,20113F-HR/ATimeline
SCOPUS ASSET MANAGEMENT, L.P.20,000$1.33M0.04%new13F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC19,634$1.31M0.02%+13,84213F-HRTimelineGroup
NewEdge Advisors, LLC19,276$1.29M<0.01%+94513F-HR/ATimeline
VIRGINIA RETIREMENT SYSTEMS ET Al18,950$1.26M0.01%-6,70013F-HRTimeline
SG Americas Securities, LLC17,667$1.18M<0.01%-24,35613F-HRTimeline
PIER 88 INVESTMENT PARTNERS LLC17,600$1.17M0.3%+27013F-HR/ATimeline
Ellsworth Advisors, LLC17,291$1.15M0.22%-1,55113F-HRTimeline
CAPTRUST FINANCIAL ADVISORS17,074$1.14M<0.01%-7,36813F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…16,896$1.13M0.01%-56913F-HRTimelineGroup
Legato Capital Management LLC16,805$1.12M0.1%+10,05513F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…16,518$1.1M<0.01%+4,09313F-HRTimeline
HUNTER ASSOCIATES INVESTMENT MANAGEMENT…15,975$1.07M0.14%-56013F-HRTimeline
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC15,257$1.02M0.02%+15,18713F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…14,695$981K<0.01%+42513F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…14,016$979K<0.01%+75713F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd14,355$958K0.02%-4,06613F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …14,141$944K<0.01%-15313F-HRTimelineGroup
Assenagon Asset Management S.A.14,038$937K<0.01%-63,75413F-HRTimeline
ExodusPoint Capital Management, LP13,609$908K0.01%new13F-HRTimeline
J.W. COLE ADVISORS, INC.13,578$906K0.03%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson13,400$894K<0.01%013F-HR/ATimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC12,849$857K<0.01%+3,28513F-HRTimelineGroup
Cetera Investment Advisers12,186$813K<0.01%+1,55213F-HRTimeline
CWM, LLCin group CWM, LLC12,170$812K<0.01%+213F-HRTimelineGroup
Lloyd Advisory Services, LLC.11,756$784K0.22%new13F-HRTimeline
Kingdom Financial Group LLC.11,756$784K0.22%-3,65213F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC11,174$746K0.01%-4,22813F-HRTimeline
GSA CAPITAL PARTNERS LLP11,053$738K0.05%+4,66813F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP10,877$723K<0.01%+39913F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC10,595$707K<0.01%-6,14313F-HRTimelineGroup
Cambridge Investment Research Advisors,…10,534$703K<0.01%-63413F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…10,392$693K0.01%+6,01513F-HRTimelineGroup
PETRA FINANCIAL ADVISORS INC10,311$688K0.43%+51913F-HRTimeline
BRIGHTON JONES LLC10,074$672K0.01%new13F-HR/ATimeline
Vident Advisory, LLCin group Vident Advisory, LLC9,928$662K0.01%new13F-HRTimelineGroup
MANGROVE PARTNERS IM, LLC9,802$654K0.05%+5,07013F-HRTimeline
Quantinno Capital Management LP9,791$653K<0.01%+1,83313F-HRTimeline
MARK SHEPTOFF FINANCIAL PLANNING, LLC8,850$653K0.35%-20013F-HRTimeline
IEQ CAPITAL, LLC9,561$638K<0.01%-7,14113F-HRTimeline
Diametric Capital, LP9,248$617K0.16%-5,39213F-HRTimeline
Man Group plcin group Man Group plc9,017$602K<0.01%-1,05413F-HRTimelineGroup
Luxor Capital Group, LP8,882$593K0.09%-444,42313F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC8,735$583K<0.01%new13F-HRTimeline
EQUITABLE TRUST CO8,599$574K0.03%-4,74113F-HRTimeline
ARCADIA INVESTMENT MANAGEMENT CORP/MI8,451$564K0.1%013F-HRTimeline
THOROUGHBRED FINANCIAL SERVICES, LLC8,422$562K0.03%new13F-HRTimeline
Police & Firemen's Retirement System of…8,383$559K<0.01%013F-HRTimeline
Quantbot Technologies LP8,094$540K0.02%-14,58413F-HRTimeline
Rafferty Asset Management, LLC8,045$537K<0.01%+77613F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC7,914$528K<0.01%+89513F-HRTimeline
HighTower Advisors, LLC7,700$514K<0.01%new13F-HRTimeline
First Bank & Trust7,596$507K0.08%-18113F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…7,441$497K<0.01%013F-HRTimeline
Integrated Quantitative Investments LLC7,337$490K0.09%+51513F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM7,254$484K<0.01%-10013F-HRTimeline
Numerai GP LLC7,133$476K0.05%new13F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC7,118$475K<0.01%new13F-HRTimelineGroup
Ares Systematic Credit Ltd7,433$463K0.37%new13F-HRTimeline
GWN SECURITIES INC.6,555$437K0.08%+20213F-HRTimeline
Verdence Capital Advisors LLC6,552$437K0.03%013F-HRTimeline
Empirical Asset Management, LLC6,530$436K0.12%-6,58013F-HRTimeline
SIERRA SUMMIT ADVISORS LLC6,529$436K0.06%new13F-HRTimeline
SummitTX Capital, L.P.6,481$432K0.01%-46,96513F-HRTimeline
Empower Advisory Group, LLCin group Empower Annuity Insurance Co …6,219$415K<0.01%013F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP6,212$415K<0.01%+1,44013F-HRTimelineGroup
ALLSTATE CORPin group ALLSTATE CORP6,188$413K<0.01%new13F-HRTimelineGroup
Elyxium Wealth, LLC6,165$411K0.13%-8513F-HRTimeline
MIRABELLA FINANCIAL SERVICES LLP6,007$401K0.04%new13F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd5,977$399K<0.01%new13F-HRTimelineGroup
Campbell & CO Investment Adviser LLC5,846$390K0.02%-7,64813F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP5,967$387K<0.01%+5,06513F-HRTimelineGroup
KLP KAPITALFORVALTNING AS5,700$380K<0.01%013F-HRTimeline
West Branch Capital LLC5,700$380K0.1%013F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpin group Mitsubishi UFJ Trust & Bankin…5,615$375K<0.01%new13F-HRTimelineGroup
Private Advisor Group, LLC5,606$374K<0.01%-4,29613F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT5,580$372K<0.01%-20,28013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV5,559$371K<0.01%+36713F-HRTimeline
ARS Investment Partners, LLC5,536$369K0.02%-1,42013F-HRTimeline
RiverPark Advisors, LLCin group RiverPark Advisors, LLC5,497$367K0.13%-1,97813F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC5,381$359K<0.01%-8613F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC5,201$347K<0.01%-3,07713F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…5,106$341K<0.01%013F-HRTimeline