AMPL — AMPLITUDE INC

Ownership history in Circumference Group LLC  ·  6 quarters on record

This page tracks every 13F SEC filing in which Circumference Group LLC reported a position in AMPLITUDE INC (AMPL). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
2.97% (2025 Q4)
Avg. % of fund
2.31%
First filed
2024 Q3
Last filed
2025 Q4
Quarters held
6
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 ADDED 238,000 +20,000 +9.2% 2.97% $2.8M $11.58
2025 Q3 UNCHANGED 218,000 — 0% 2.61% $2.3M $10.72
2025 Q2 ADDED 218,000 +40,000 +22.5% 2.80% $2.7M $12.40
2025 Q1 UNCHANGED 178,000 — 0% 2.22% $1.8M $10.19
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% of Fund (quarterly)    AMPL price (monthly, adj. close)

Other funds also holding AMPL

As of 2025 Q4 — sorted by position size

Toronado Partners, LLC 3Y 7Y 8.58% Meros Investment Management, LP 3Y 3.96% Gagnon Advisors, LLC 3Y 7Y 3.36% MONIMUS CAPITAL MANAGEMENT, LP 2.84% LIGHT STREET CAPITAL MANAGEMENT, LLC 3Y 7Y 2.67% GAGNON SECURITIES LLC 3Y 7Y 1.65% Optimus Prime Fund Management Co., Ltd. 3Y 7Y 1.47% WESTERLY CAPITAL MANAGEMENT, LLC 3Y 7Y 1.27% G2 Investment Partners Management LLC 3Y 7Y 0.78% Kultura Capital Management LP 0.76%
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