Ambiq Micro
AMBQ · NYSE
$50.98+$1.36 (+2.74%)TodayMarket closed ·
Prev close $49.62
Who owns AMBQ
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 81.2% of AMBQ’s shares.
- Manulife Investment Management (North America) Limited43.2%
- Kleiner, Perkins, Caufield & Byers8.7%
- BlackRock Institutional Trust Company, N.A.5.0%
- T. Rowe Price Investment Management, Inc.4.2%
- Next 6 largest institutions20.0%
- All other shareholders18.8%
| Holder | Shares | % of shares |
|---|---|---|
| Manulife Investment Management (North America) Limited | 10.30M | 43.20% |
| Kleiner, Perkins, Caufield & Byers | 2.08M | 8.73% |
| BlackRock Institutional Trust Company, N.A. | 1.20M | 5.04% |
| T. Rowe Price Investment Management, Inc. | 1.01M | 4.22% |
| D. E. Shaw & Co., L.P. | 983.92K | 4.13% |
| Atreides Management, LP | 877.12K | 3.68% |
| State Street Investment Management (US) | 861.98K | 3.61% |
| Vanguard Capital Management, LLC | 768.54K | 3.22% |
| Two Sigma Investments, LP | 655.11K | 2.75% |
| Hsieh (Wen Hsuan) | 633.92K | 2.66% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 643.35K | 2.70% |
| iShares Russell 2000 ETF | 482.96K | 2.03% |
| State Street SPDR S&P Semiconductor ETF | 344.19K | 1.44% |
| T. Rowe Price Small Cap Stock Fund | 301.79K | 1.27% |
| Needham Aggressive Growth Fund | 278.99K | 1.17% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $38.36M (75 trades) of AMBQ on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Esaka Fumihide | Option exercise | 5.00K | — |
| Esaka Fumihide | Sale | 1.20K | $62.23K |
| Esaka Fumihide | Sale | 2.80K | $143.21K |
| Esaka Fumihide | Sale | 500 | $25.01K |
| Esaka Fumihide | Sale | 500 | $24.57K |
| Esaka Fumihide | Option exercise | 5.00K | $40.60K |
| Hanson Scott McLean | Option exercise | 7.00K | — |
| Hanson Scott McLean | Sale | 1.80K | $93.35K |
| Hanson Scott McLean | Sale | 3.70K | $189.15K |
| Hanson Scott McLean | Sale | 900 | $45.07K |
Short interest
Settled Sep 30, 2026
- Shares short
- 2.44M
- Days to cover
- 3.55
- % of shares outstanding
- 10.24%
- Average daily volume
- 688.42K
- Change since last report
- +15.7%
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