Amplitude, Inc. (AMPL) Institutional Ownership

Ownership Summary

Amplitude, Inc. (NASDAQ:AMPL) showed up in the 13F filings of 205 institutional investors as of December 2025.

• Their combined ownership stood at 60.4% of outstanding shares in December 2025, up from 59.8% in September 2025.
• They increased total shares held in Amplitude by 5.69% from last quarter, and the number of investors in AMPL increased 41.38% annually.
• Of these 205 holders, 121 added to their stakes in Amplitude, 56 trimmed positions, and 28 made no changes.
• Combined, these investors held 80.28Mn shares in AMPL for December 2025, up by 4.32Mn shares quarter on quarter, and up 8.91Mn shares year over year.
• WELLINGTON MANAGEMENT GROUP LLP leads ownership in AMPL with 11.15Mn shares as of December 31, 2025, equal to 8.39% of outstanding shares.
• Top purchasers of AMPL stock for the quarter ending December 2025 included WELLINGTON MANAGEMENT GROUP LLP (9.19Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (6.17Mn), VANGUARD CAPITAL MANAGEMENT LLC (4.09Mn), FMR LLC (2.87Mn), JACOBS LEVY EQUITY MANAGEMENT, INC (1.67Mn).
• Top sellers of AMPL stock for the quarter ending December 2025 included ALLIANCEBERNSTEIN L.P. (5.93Mn), TimesSquare Capital Management, LLC (2.51Mn), Goldman Sachs Group Inc (1.84Mn), CITADEL ADVISORS LLC (1.34Mn), LIGHT STREET CAPITAL MANAGEMENT, LLC (1.21Mn).
• Amplitude's 10 largest shareholders as of December 2025 include WELLINGTON MANAGEMENT GROUP LLP (11.15Mn), BlackRock, Inc. (10.16Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (6.17Mn), VANGUARD CAPITAL MANAGEMENT LLC (4.09Mn), FMR LLC (3.31Mn), SC US (TTGP), LTD. (2.8Mn), BAILLIE GIFFORD & CO (2.63Mn), Nuveen, LLC (2.55Mn), State Street Corp (2.43Mn), Point72 Asset Management, L.P. (2.41Mn) per Business Quant data.