AMBQ
Ambiq Micro, Inc. · Technology · Semiconductors
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +30.0% ·
net new positions +20.0%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 307.84K | New | $9.21M | 0.0% | New | 1 | SEC ↗ ×3 |
| 2 | BlackRock ✦ (passive) | 291.88K | New | $8.73M | 0.0% | New | 1 | SEC ↗ ×5 |
| 3 | Goldman Sachs Group ✦ | 121.40K | n/a | $3.63M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 4 | Geode Capital Management ✦ (passive) | 98.03K | New | $2.93M | 0.0% | New | 1 | SEC ↗ ×2 |
| 5 | State Street Global Advisors ✦ (passive) | 72.30K | New | $2.16M | 0.0% | New | 1 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 60.00K | New | $1.80M | 0.0% | New | 1 | SEC ↗ |
| 7 | D. E. Shaw & Co. ✦ | 15.17K | New | $453,856 | 0.0% | New | 1 | SEC ↗ |
| 8 | Morgan Stanley ✦ | 8.71K | n/a | $260,634 | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 9 | Two Sigma Investments ✦ | 7.47K | New | $223,383 | 0.0% | New | 1 | SEC ↗ |
| 10 | JPMorgan Chase ✦ | 3.75K | n/a | $112,320 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 11 | Fidelity (FMR) ✦ | 111 | New | $3,321 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| The Vanguard Group | $9.21M | 0.0% |
| BlackRock | $8.73M | 0.0% |
| Geode Capital Management | $2.93M | 0.0% |
| State Street Global Advisors | $2.16M | 0.0% |
| Citadel Advisors | $1.80M | 0.0% |
| D. E. Shaw & Co. | $453,856 | 0.0% |
| Two Sigma Investments | $223,383 | 0.0% |
| Fidelity (FMR) | $3,321 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 96 holders, 10.92M shares, $247.14M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer, Director · 1.20K sh · $62,226
Officer, Director · 500 sh · $25,011
Officer, Director · 500 sh · $24,567
Officer, Director · 900 sh · $45,074
Officer, Director · 1.80K sh · $93,351
Officer, Director · 2.80K sh · $143,214
Officer, Director · 3.70K sh · $189,148
Officer, Director · 600 sh · $29,436
Officer · 4.00K sh · $213,745
Officer · 2.00K sh · $104,936
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology