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..
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Cornerstone Financial Management Llc | Buy | +47 | — | 47 | $544.00 | Q4 2025 | Aug 28, 2026 |
| Algert Global Llc | Sell | -4,740 | -1.5% | 320,189 | $3.71M | Q4 2025 | Aug 11, 2026 |
| Cygnus Capital Advisors, Llc | Buy | +562 | — | 562 | $7.00K | Q4 2025 | May 12, 2026 |
| Hsbc Holdings Plc | Buy | +141,996 | — | 141,996 | $1.65M | Q4 2025 | Mar 06, 2026 |
| Sunbelt Securities, Inc. | Buy | +30 | — | 30 | $347.00 | Q4 2025 | Feb 20, 2026 |
| Mercer Global Advisors Inc | Buy | +140,708 | — | 140,708 | $1.63M | Q4 2025 | Feb 18, 2026 |
| Mackenzie Financial Corp | Buy | +86,730 | — | 86,730 | $1.02M | Q4 2025 | Feb 18, 2026 |
| Raymond James Financial Inc | Buy | +83,916 | — | 83,916 | $971.75K | Q4 2025 | Feb 18, 2026 |
| Newedge Advisors, Llc | Buy | +400 | — | 400 | $4.63K | Q4 2025 | Feb 18, 2026 |
| Alliancebernstein L.P. | Buy | +6,243,312 | — | 6,243,312 | $72.30M | Q4 2025 | Feb 17, 2026 |
| Point72 Asset Management, L.P. | Buy | +3,498,694 | — | 3,498,694 | $40.51M | Q4 2025 | Feb 17, 2026 |
| Millennium Management Llc | Buy | +2,252,730 | — | 2,252,730 | $26.09M | Q4 2025 | Feb 17, 2026 |
| Wellington Management Group Llp | Buy | +1,964,050 | — | 1,964,050 | $22.74M | Q4 2025 | Feb 17, 2026 |
| Optimus Prime Fund Management Co., Ltd. | Buy | +1,580,100 | — | 1,580,100 | $18.30M | Q4 2025 | Feb 17, 2026 |
| Light Street Capital Management, Llc | Buy | +1,500,000 | — | 1,500,000 | $17.37M | Q4 2025 | Feb 17, 2026 |
| Arrowmark Colorado Holdings Llc | Buy | +1,484,297 | — | 1,484,297 | $17.19M | Q4 2025 | Feb 17, 2026 |
| Citadel Advisors Llc | Buy | +1,376,002 | — | 1,376,002 | $15.93M | Q4 2025 | Feb 17, 2026 |
| Two Sigma Investments, Lp | Buy | +1,041,274 | — | 1,041,274 | $12.06M | Q4 2025 | Feb 17, 2026 |
| Meros Investment Management, Lp | Buy | +861,874 | — | 861,874 | $9.98M | Q4 2025 | Feb 17, 2026 |
| Aqr Capital Management Llc | Buy | +843,434 | — | 843,434 | $9.77M | Q4 2025 | Feb 17, 2026 |
| Northern Trust Corp | Buy | +822,626 | — | 822,626 | $9.53M | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +659,613 | — | 659,613 | $7.64M | Q4 2025 | Feb 17, 2026 |
| Two Sigma Advisers, Lp | Buy | +560,500 | — | 560,500 | $6.49M | Q4 2025 | Feb 17, 2026 |
| Portolan Capital Management, Llc | Buy | +560,096 | — | 560,096 | $6.49M | Q4 2025 | Feb 17, 2026 |
| Westerly Capital Management, Llc | Buy | +500,000 | — | 500,000 | $5.79M | Q4 2025 | Feb 17, 2026 |
| Fmr Llc | Buy | +446,180 | — | 446,180 | $5.17M | Q4 2025 | Feb 17, 2026 |
| Trexquant Investment Lp | Buy | +444,674 | — | 444,674 | $5.15M | Q4 2025 | Feb 17, 2026 |
| Voloridge Investment Management, Llc | Buy | +402,828 | — | 402,828 | $4.66M | Q4 2025 | Feb 17, 2026 |
| Monimus Capital Management, Lp | Buy | +371,467 | — | 371,467 | $4.30M | Q4 2025 | Feb 17, 2026 |
| G2 Investment Partners Management Llc | Buy | +284,481 | — | 284,481 | $3.29M | Q4 2025 | Feb 17, 2026 |
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.
Related AMPL Institutional Insights
- AMPL Overview
- AMPL 13F Institutional Holders
- AMPL Superinvestors
- Technology Sector Institutional Ownership
- Technology Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Technology Stocks By Institutional Investors
- Most Sold Technology Stocks By Institutional Investors
- AMPL Insider Trading & SEC Form 4 Activity
- AMPL Articles
- Top Institutional Investor Stock Rankings