Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in AMPL held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | WELLINGTON MANAGEMENT GROUP LLP | 11.2M | $76.1M | +467.9% | 8.369% | 0.01% |
| 2 | BlackRock, Inc. | 10.2M | $69.3M | +3.9% | 7.625% | 0.00% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2M | $42.0M | β | 4.626% | 0.00% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 4.1M | $27.9M | β | 3.070% | 0.00% |
| 5 | FMR LLC | 3.3M | $22.6M | +642.1% | 2.484% | 0.00% |
| 6 | SC US (TTGP), LTD. | 2.8M | $19.1M | 0.0% | 2.100% | 0.21% |
| 7 | MILLENNIUM MANAGEMENT LLC | 2.7M | $18.1M | β | 1.992% | 0.01% |
| 8 | BAILLIE GIFFORD & CO | 2.6M | $18.0M | -3.9% | 1.976% | 0.02% |
| 9 | Nuveen, LLC | 2.6M | $17.4M | -3.4% | 1.917% | 0.00% |
| 10 | STATE STREET CORP | 2.4M | $16.6M | +5.4% | 1.823% | 0.00% |
| 11 | Point72 Asset Management, L.P. | 2.4M | $16.4M | -31.1% | 1.809% | 0.02% |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 2.3M | $15.9M | +4.5% | 1.745% | 0.00% |
| 13 | JACOBS LEVY EQUITY MANAGEMENT, INC | 1.7M | $11.8M | +2881.5% | 1.299% | 0.05% |
| 14 | Optimus Prime Fund Management Co., Ltd. | 1.6M | $10.8M | 0.0% | 1.186% | 1.04% |
| 15 | MONIMUS CAPITAL MANAGEMENT, LP | 1.3M | $8.6M | +240.4% | 0.949% | 2.39% |
| 16 | ArrowMark Colorado Holdings LLC | 1.3M | $8.6M | -15.4% | 0.942% | 0.23% |
| 17 | AQR CAPITAL MANAGEMENT LLC | 1.2M | $8.4M | +46.4% | 0.927% | 0.00% |
| 18 | Meros Investment Management, LP | 1.2M | $7.9M | +35.0% | 0.873% | 3.44% |
| 19 | GAGNON SECURITIES LLC | 1.1M | $7.2M | +51.6% | 0.795% | 1.67% |
| 20 | MORGAN STANLEY | 921K | $6.3M | +34.3% | 0.691% | 0.00% |
| 21 | NORTHERN TRUST CORP | 869K | $5.9M | +5.6% | 0.652% | 0.00% |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 734K | $5.0M | -5.7% | 0.550% | 0.00% |
| 23 | Squarepoint Ops LLC | 712K | $4.9M | -26.4% | 0.534% | 0.01% |
| 24 | TWO SIGMA INVESTMENTS, LP | 692K | $4.7M | -33.6% | 0.519% | 0.00% |
| 25 | VANGUARD FIDUCIARY TRUST CO | 661K | $4.5M | β | 0.496% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in AMPL β a direct measure of their conviction.
Filings activity in AMPL during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new AMPL position in Q1 2026
Institutions that fully closed their AMPL position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 213 | +2.9% | 61.54% | 35.73 pp | $565M | 37% |
| Q4 2025 | 207 | +5.6% | 97.27% | +12.56 pp | $893M | +15% |
| Q3 2025 | 196 | +5.4% | 84.71% | 4.88 pp | $778M | 5.4% |
| Q2 2025 | 186 | 2.6% | 89.59% | +19.07 pp | $823M | +27% |
| Q1 2025 | 191 | +31% | 70.52% | 129.47 pp | $648M | 94% |
| Q4 2024 | 146 | +9.8% | 199.99% | +143.64 pp | $10.05B | +1842% |
| Q3 2024 | 133 | +0.0% | 56.35% | +1.56 pp | $517M | +2.8% |
| Q2 2024 | 133 | β | 54.79% | β | $503M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying AMPL stock.
Based on Q1 2026 13F filings, institutional ownership of Amplitude, Inc. stands at 61.5%, held across 213 reporting institutions.
WELLINGTON MANAGEMENT GROUP LLP is the largest reported institutional holder of AMPL, with approximately 11,154,556 shares worth $0.08B as of Q1 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of AMPL, including MILLENNIUM MANAGEMENT LLC, Point72 Asset Management, L.P., TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for AMPL is 52 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
50 institutions opened new positions in AMPL during Q1 2026, while 44 fully exited. 35 added to existing positions and 126 trimmed.
AMPL institutional ownership fell by 35.73 percentage points quarter-over-quarter, with a net change of +6 holders.
The top 10 institutions account for 57.9% of all reported 13F value in AMPL, and the top 25 account for 80.3%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Amplitude, Inc. (AMPL) Institutional Ownership