Ticker · CUSIP 03213A104
Holders (tracked)
14
Combined shares
16,393,375
Combined value
$188.41M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
SEC event timeline
20 events
- Ken Griffin (Citadel Advisors) added2026-02-17+803,478 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+345,411 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+191,049 shares · 2025Q413F
- Steve Cohen (Point72) added2026-02-17+2,222,589 shares · 2025Q413F
- T. Rowe Price trimmed2026-02-17−89,190 shares · 2025Q413F
- +1,500,000 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−62,548 shares · 2025Q413F
- AQR Capital Management added2026-02-17+202,349 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−93,466 shares · 2025Q413F
- Baillie Gifford & Co added2026-01-23+59,984 shares · 2025Q413F
- −414,830 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+223,585 shares · 2025Q313F
- Wellington Management added2025-11-14+1,797,228 shares · 2025Q313F
- AQR Capital Management added2025-11-14+441,921 shares · 2025Q313F
- Steve Cohen (Point72) added2025-11-14+81,005 shares · 2025Q313F
- D.E. Shaw & Co. exited2025-11-14−11,555 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−32,986 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+155,519 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−72,185 shares · 2025Q313F
- Baillie Gifford & Co added2025-10-31+703,328 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- Glen Kacher (Light Street Capital)+1,500,000$17.4M
Added to6
- Steve Cohen (Point72)+2,222,589$25.7M
- Ken Griffin (Citadel Advisors)+803,478$9.3M
- Two Sigma Investments+345,411$4.0M
- AQR Capital Management+202,349$2.3M
- Izzy Englander (Millennium Mgmt)+191,049$2.2M
- Baillie Gifford & Co+59,984$695K
Trimmed3
- Renaissance Technologies−93,466$1.1M
- Wellington Management−62,548$724K
- T. Rowe Price−89,190$1K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 11 | $85.0M |
| 2022Q2 | 8 | $98.7M |
| 2022Q3 | 9 | $79K |
| 2022Q4 | 11 | $48.9M |
| 2023Q1 | 10 | $49.6M |
| 2023Q2 | 12 | $70.8M |
| 2023Q3 | 11 | $89.3M |
| 2023Q4 | 9 | $79.7M |
| 2024Q1 | 6 | $61.2M |
| 2024Q2 | 9 | $59.0M |
| 2024Q3 | 8 | $6.6M |
| 2024Q4 | 9 | $12.3M |
| 2025Q1 | 10 | $46.4M |
| 2025Q2 | 14 | $96.7M |
| 2025Q3 | 13 | $113.2M |
| 2025Q4 | 14 | $188.4M |
Who owns AMPL
14 super-investors · 2025Q4
Tracked stake
16.39M
shares
Combined value
$188M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added10Trim3
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Steve Cohen Point72 | 3.50M | $41M |
| 2 | Baillie Gifford & Co | 2.74M | $32M |
| 3 | Izzy Englander Millennium Mgmt | 2.25M | $26M |
| 4 | Wellington Management | 1.96M | $23M |
| 5 | Glen Kacher Light Street Capital | 1.50M | $17M |
| 6 | Ken Griffin Citadel Advisors | 1.38M | $16M |
| 7 | Two Sigma Investments | 1.04M | $12M |
| 8 | AQR Capital Management | 843.4K | $10M |
| 9 | Izzy Englander Millennium Mgmt | 640.0K | $7M |
| 10 | Izzy Englander Millennium Mgmt | 200.0K | $2M |
| 11 | Ken Griffin Citadel Advisors | 118.5K | $1M |
| 12 | Renaissance Technologies | 81.6K | $945K |
| 13 | Ken Griffin Citadel Advisors | 12.1K | $140K |
| 14 | T. Rowe Price | 123.1K | $1K |
Recent moves
20 transactions
- −62,548 · 2025Q4
- +803,478 · 2025Q4
- +202,349 · 2025Q4
- +345,411 · 2025Q4
- +191,049 · 2025Q4
- +2,222,589 · 2025Q4
- +1,500,000 · 2025Q4
- TRIMT. Rowe Price−89,190 · 2025Q4
- −93,466 · 2025Q4
- +59,984 · 2025Q4
- −414,830 · 2025Q3
- SOLDD.E. Shaw & Co.−11,555 · 2025Q3
- +441,921 · 2025Q3
- +81,005 · 2025Q3
- TRIMT. Rowe Price−32,986 · 2025Q3
- +155,519 · 2025Q3
- +1,797,228 · 2025Q3
- +223,585 · 2025Q3
- −72,185 · 2025Q3
- +703,328 · 2025Q3
Embed this chart
Paste this iframe anywhere to embed the live AMPL chart.
<iframe src="https://openstocks.me/embed/stock/AMPL" width="100%" height="480" frameborder="0" loading="lazy" title="AMPL chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>