ANTERIX INC (ATEX) Institutional Ownership Changes & 13F Activity

ANTERIX INC (ATEX). 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 T. Rowe Price Investment Management, Inc., Price T Rowe Associates Inc, Jane Street Group, Llc, Millennium Management Llc, and Invesco Ltd..

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheBuy+3,1233,123$321.48KQ2 2026Sep 09, 2026
Citadel Advisors LlcSell-152,149-94.4%9,014$927.90KQ2 2026Sep 02, 2026
California State Teachers Retirement SystemSell-451-74.1%158$16.27KQ2 2026Aug 24, 2026
Mercer Global Advisors IncBuy+2,7162,716$279.58KQ2 2026Aug 19, 2026
Proficio Capital Partners LlcSell-17,000-85.0%3,000$308.82KQ2 2026Aug 17, 2026
T. Rowe Price Investment Management, Inc.Buy+2,348,0192,348,019$241.71MQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+742,496+9333.7%750,451$77.25MQ2 2026Aug 14, 2026
Jane Street Group, LlcSell-403,351-95.8%17,506$1.80MQ2 2026Aug 14, 2026
Millennium Management LlcSell-277,582-90.1%30,340$3.12MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+200,975200,975$20.69MQ2 2026Aug 14, 2026
Garnet Equity Capital Holdings, Inc.Sell-187,377-54.5%156,119$16.07MQ2 2026Aug 14, 2026
Potrero Capital Research LlcSell-183,036-79.7%46,525$4.79MQ2 2026Aug 14, 2026
Hrt Financial LpSell-144,252-82.5%30,673$3.16MQ2 2026Aug 14, 2026
Qvt Financial LpSell-120,000-23.8%383,941$39.52MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Buy+87,294+1532.5%92,990$9.57MQ2 2026Aug 14, 2026
Atom Investors LpSell-80,055-95.1%4,124$424.52KQ2 2026Aug 14, 2026
Granahan Investment Management, LlcBuy+72,12172,121$7.42MQ2 2026Aug 14, 2026
Susquehanna International Group, LlpSell-34,214-86.0%5,584$574.82KQ2 2026Aug 14, 2026
Bank Of America CorpSell-33,095-19.7%134,686$13.86MQ2 2026Aug 14, 2026
Gilder Gagnon Howe & Co LlcBuy+32,83332,833$3.38MQ2 2026Aug 14, 2026
Wellington Management Group LlpBuy+31,00631,006$3.19MQ2 2026Aug 14, 2026
Beartown Capital Management, LlcSell-25,000-25.0%75,000$7.72MQ2 2026Aug 14, 2026
Goldman Sachs Group IncSell-22,452-13.9%139,334$14.34MQ2 2026Aug 14, 2026
Plustick Management LlcBuy+20,404+4.1%520,000$53.53MQ2 2026Aug 14, 2026
683 Capital Management, LlcBuy+20,000+43.5%66,000$6.79MQ2 2026Aug 14, 2026
Panoramic Capital, LlcBuy+19,377+14.4%154,377$15.89MQ2 2026Aug 14, 2026
Potomac Capital Management, Inc.Sell-18,731-10.8%155,071$15.96MQ2 2026Aug 14, 2026
Caption Management, LlcBuy+17,53217,532$1.80MQ2 2026Aug 14, 2026
Marble Bar Asset Management LlpBuy+14,739+27.5%68,248$7.03MQ2 2026Aug 14, 2026
Caxton Associates LlpBuy+13,43213,432$1.38MQ2 2026Aug 14, 2026
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Frequently asked questions about ATEX activity

  • Which institutional owners are buying ATEX?

    Institutional owners buying ATEX 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 ATEX activity?

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

  • Is institutional interest in ATEX increasing?

    Institutional interest in ATEX 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.