AMPLITUDE INC-CLASS A (AMPL) Institutional Ownership Changes & 13F Activity

AMPLITUDE INC-CLASS A (AMPL). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Alliancebernstein L.P., Point72 Asset Management, L.P., Millennium Management Llc, Wellington Management Group Llp, and Optimus Prime Fund Management Co., Ltd..

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Cornerstone Financial Management LlcBuy+47—47$544.00Q4 2025Aug 28, 2026
Algert Global LlcSell-4,740-1.5%320,189$3.71MQ4 2025Aug 11, 2026
Cygnus Capital Advisors, LlcBuy+562—562$7.00KQ4 2025May 12, 2026
Hsbc Holdings PlcBuy+141,996—141,996$1.65MQ4 2025Mar 06, 2026
Sunbelt Securities, Inc.Buy+30—30$347.00Q4 2025Feb 20, 2026
Mercer Global Advisors IncBuy+140,708—140,708$1.63MQ4 2025Feb 18, 2026
Mackenzie Financial CorpBuy+86,730—86,730$1.02MQ4 2025Feb 18, 2026
Raymond James Financial IncBuy+83,916—83,916$971.75KQ4 2025Feb 18, 2026
Newedge Advisors, LlcBuy+400—400$4.63KQ4 2025Feb 18, 2026
Alliancebernstein L.P.Buy+6,243,312—6,243,312$72.30MQ4 2025Feb 17, 2026
Point72 Asset Management, L.P.Buy+3,498,694—3,498,694$40.51MQ4 2025Feb 17, 2026
Millennium Management LlcBuy+2,252,730—2,252,730$26.09MQ4 2025Feb 17, 2026
Wellington Management Group LlpBuy+1,964,050—1,964,050$22.74MQ4 2025Feb 17, 2026
Optimus Prime Fund Management Co., Ltd.Buy+1,580,100—1,580,100$18.30MQ4 2025Feb 17, 2026
Light Street Capital Management, LlcBuy+1,500,000—1,500,000$17.37MQ4 2025Feb 17, 2026
Arrowmark Colorado Holdings LlcBuy+1,484,297—1,484,297$17.19MQ4 2025Feb 17, 2026
Citadel Advisors LlcBuy+1,376,002—1,376,002$15.93MQ4 2025Feb 17, 2026
Two Sigma Investments, LpBuy+1,041,274—1,041,274$12.06MQ4 2025Feb 17, 2026
Meros Investment Management, LpBuy+861,874—861,874$9.98MQ4 2025Feb 17, 2026
Aqr Capital Management LlcBuy+843,434—843,434$9.77MQ4 2025Feb 17, 2026
Northern Trust CorpBuy+822,626—822,626$9.53MQ4 2025Feb 17, 2026
Bank Of America CorpBuy+659,613—659,613$7.64MQ4 2025Feb 17, 2026
Two Sigma Advisers, LpBuy+560,500—560,500$6.49MQ4 2025Feb 17, 2026
Portolan Capital Management, LlcBuy+560,096—560,096$6.49MQ4 2025Feb 17, 2026
Westerly Capital Management, LlcBuy+500,000—500,000$5.79MQ4 2025Feb 17, 2026
Fmr LlcBuy+446,180—446,180$5.17MQ4 2025Feb 17, 2026
Trexquant Investment LpBuy+444,674—444,674$5.15MQ4 2025Feb 17, 2026
Voloridge Investment Management, LlcBuy+402,828—402,828$4.66MQ4 2025Feb 17, 2026
Monimus Capital Management, LpBuy+371,467—371,467$4.30MQ4 2025Feb 17, 2026
G2 Investment Partners Management LlcBuy+284,481—284,481$3.29MQ4 2025Feb 17, 2026
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Frequently asked questions about AMPL activity

  • Which institutional owners are buying AMPL?

    Institutional owners buying AMPL 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 AMPL activity?

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

  • Is institutional interest in AMPL increasing?

    Institutional interest in AMPL 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.

AMPL Institutional Ownership Changes and 13F Activity Q4 2025 | InsiderSet