ADTRAN HOLDINGS INC (ADTN) Institutional Ownership Changes & 13F Activity

ADTRAN HOLDINGS INC (ADTN). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Two Sigma Investments, Lp, Qube Research & Technologies Ltd, Divisar Capital Management Llc, Millennium Management Llc, and Needham Investment Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Neuberger Berman Group LlcSell-13,908-100.0%0$0.00Q2 2026Oct 27, 2026
State Street CorpBuy+732,057+31.1%3,082,794$42.85MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheBuy+280+1.4%20,468$284.50KQ2 2026Sep 09, 2026
Parkside Financial Bank & TrustBuy+1,104+51.7%3,238$45.01KQ2 2026Sep 04, 2026
Citadel Advisors LlcSell-364,115-92.5%29,619$411.70KQ2 2026Sep 02, 2026
Corient Private Wealth LlcBuy+19,969—19,969$277.57KQ2 2026Aug 27, 2026
First Eagle U.S. ValueSell-120,200-8.8%1,248,507$17.35MQ2 2026Aug 24, 2026
California State Teachers Retirement SystemBuy+11,013+15.3%83,036$1.15MQ2 2026Aug 24, 2026
Assenagon Asset Management S.A.Buy+459,802+100.4%917,754$12.76MQ2 2026Aug 21, 2026
Mercer Global Advisors IncBuy+1,230+4.8%26,791$372.39KQ2 2026Aug 19, 2026
Empowered Funds, LlcBuy+184,606—184,606$2.57MQ2 2026Aug 17, 2026
Two Sigma Investments, LpBuy+1,772,829+157.8%2,896,353$40.26MQ2 2026Aug 14, 2026
Qube Research & Technologies LtdBuy+1,128,968+418.2%1,398,913$19.44MQ2 2026Aug 14, 2026
Divisar Capital Management LlcSell-917,913-51.9%851,526$11.84MQ2 2026Aug 14, 2026
Millennium Management LlcBuy+826,409+43.6%2,722,820$37.85MQ2 2026Aug 14, 2026
Needham Investment Management LlcSell-778,500-63.4%450,000$6.25MQ2 2026Aug 14, 2026
Sei Investments CoSell-701,857-63.5%403,253$5.61MQ2 2026Aug 14, 2026
Kerrisdale Advisers, LlcSell-481,491-87.2%70,519$980.21KQ2 2026Aug 14, 2026
Bank Of America CorpBuy+478,195+130.2%845,421$11.75MQ2 2026Aug 14, 2026
Barclays PlcSell-448,578-48.3%479,197$6.66MQ2 2026Aug 14, 2026
Jacobs Levy Equity Management, IncSell-403,615-87.4%58,066$807.12KQ2 2026Aug 14, 2026
Westerly Capital Management, LlcSell-300,000-37.5%500,000$6.95MQ2 2026Aug 14, 2026
Balyasny Asset Management L.P.Buy+275,489—275,489$3.83MQ2 2026Aug 14, 2026
Squarepoint Ops LlcSell-270,574-30.5%617,388$8.58MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+266,134—266,134$3.70MQ2 2026Aug 14, 2026
Gratia Capital, LlcBuy+250,492—250,492$3.48MQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+246,673+65.2%625,245$8.69MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+236,765—236,765$3.29MQ2 2026Aug 14, 2026
Exoduspoint Capital Management, LpSell-234,675-90.3%25,241$350.85KQ2 2026Aug 14, 2026
Trexquant Investment LpSell-212,176-31.0%472,733$6.57MQ2 2026Aug 14, 2026
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Frequently asked questions about ADTN activity

  • Which institutional owners are buying ADTN?

    Institutional owners buying ADTN include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ADTN activity?

    "Buy" means an investor increased their reported position in ADTN compared to the prior reporting period. This reflects growing exposure to ADTRAN HOLDINGS INC (ADTN) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ADTN increasing?

    Institutional interest in ADTN can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.