Security record · archived quarter
AMBQ
Ambiq Micro, Inc. · Technology · Semiconductors
37Tracked holders
-1Δ holders
2.33MShares held
$66.28MReported value
+2New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth -2.6% ·
share flow +4.7% ·
net new positions 0.0%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 72 | +30 | 20.90M | $897.45M | +31 | −1 |
| Q1 2026 | 44 | +8 | 5.41M | $139.41M | +11 | −4 |
| Q4 2025 | 37 | -1 | 2.33M | $66.28M | +2 | −2 |
| Q3 2025 | 11 | +8 | 986.65K | $29.52M | +8 | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Alliancebernstein L.P. | 395.37K | — | $11.27M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 328.18K | +6.6% | $9.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 328.18K | +6.6% | $9.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 328.18K | +6.6% | $9.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 307.90K | +5.5% | $8.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 307.90K | +5.5% | $8.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 307.90K | +5.5% | $8.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 307.90K | +5.5% | $8.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 307.90K | +5.5% | $8.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | Franklin Resources Inc | 307.89K | — | $8.77M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | First Eagle Investment Management… | 189.72K | — | $5.41M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Goldman Sachs Group ✦ | 132.11K | +8.8% | $3.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | Goldman Sachs Group ✦ | 132.11K | +8.8% | $3.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | Geode Capital Management ✦ (passive) | 104.18K | +6.3% | $2.97M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Geode Capital Management ✦ (passive) | 104.18K | +6.3% | $2.97M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | State Street Global Advisors ✦ (passive) | 84.51K | +16.9% | $2.41M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 17 | Peak6 Llc | 71.67K | — | $2.04M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | Peak6 Llc | 71.67K | — | $2.04M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Millennium Management ✦ | 62.02K | New | $1.77M | 0.0% | New | 1 | SEC ↗ |
| 20 | Morgan Stanley ✦ | 39.28K | +351.0% | $1.12M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 21 | Morgan Stanley ✦ | 39.28K | +351.0% | $1.12M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 22 | Morgan Stanley ✦ | 39.28K | +351.0% | $1.12M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 23 | Morgan Stanley ✦ | 39.28K | +351.0% | $1.12M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | UBS Group AG | 35.79K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | UBS Group AG | 35.79K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | UBS Group AG | 35.79K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Charles Schwab Investment… | 33.83K | — | $964,241 | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Alyeska Investment Group, L.P. | 32.83K | — | $935,712 | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Tudor Investment Corp Et Al | 26.98K | — | $768,816 | 0.0% | n/c | 1 | SEC ↗ |
| 30 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 22.18K | — | $632,102 | 0.0% | n/c | 1 | SEC ↗ |
| 31 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 22.18K | — | $632,102 | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Ameriprise Financial Inc | 20.46K | — | $582,996 | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Northern Trust Corp | 20.28K | — | $578,094 | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Northern Trust Corp | 20.28K | — | $578,094 | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Norges Bank ✦ (passive) | 20.00K | New | $570,000 | 0.0% | New | 1 | SEC ↗ |
| 36 | D. E. Shaw & Co. ✦ | 19.57K | +29.0% | $557,859 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Deutsche Bank Ag\ | 15.39K | — | $438,587 | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Deutsche Bank Ag\ | 15.39K | — | $438,587 | 0.0% | n/c | 1 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 12.69K | +238.1% | $361,695 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 40 | JPMorgan Chase ✦ | 12.69K | +238.1% | $361,695 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | JPMorgan Chase ✦ | 12.69K | +238.1% | $361,695 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 42 | JPMorgan Chase ✦ | 12.69K | +238.1% | $361,695 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 43 | Bank of New York Mellon Corp | 10.82K | — | $308,314 | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Bank of New York Mellon Corp | 10.82K | — | $308,314 | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Barclays Plc | 8.45K | — | $240,854 | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Bank Of America Corp /De/ | 6.56K | — | $186,932 | 0.0% | n/c | 1 | SEC ↗ |
| 47 | Bank Of America Corp /De/ | 6.56K | — | $186,932 | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Bank Of America Corp /De/ | 6.56K | — | $186,932 | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Wells Fargo & Company/Mn | 5.34K | — | $152,304 | 0.0% | n/c | 1 | SEC ↗ |
| 50 | Wells Fargo & Company/Mn | 5.34K | — | $152,304 | 0.0% | n/c | 1 | SEC ↗ |
| 51 | Rhumbline Advisers | 3.41K | — | $97,127 | 0.0% | n/c | 1 | SEC ↗ |
| 52 | New York State Common Retirement… | 1.70K | — | $48,450 | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Osaic Holdings, Inc. | 1.59K | — | $45,455 | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Citigroup Inc | 1.10K | — | $31,379 | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Citigroup Inc | 1.10K | — | $31,379 | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Bnp Paribas Financial Markets | 989 | — | $28,186 | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Royal Bank Of Canada | 810 | — | $24,000 | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Royal Bank Of Canada | 810 | — | $24,000 | 0.0% | n/c | 1 | SEC ↗ |
| 59 | Royal Bank Of Canada | 810 | — | $24,000 | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Royal Bank Of Canada | 810 | — | $24,000 | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Fidelity (FMR) ✦ | 572 | +415.3% | $16,290 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 62 | Fidelity (FMR) ✦ | 572 | +415.3% | $16,290 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 63 | Legal & General Group Plc | 473 | — | $13,481 | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Russell Investments Group, Ltd. | 412 | — | $11,742 | 0.0% | n/c | 1 | SEC ↗ |
| 65 | Russell Investments Group, Ltd. | 412 | — | $11,742 | 0.0% | n/c | 1 | SEC ↗ |
| 66 | California State Teachers… | 287 | — | $8,180 | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Cwm, Llc | 49 | — | $1,000 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Millennium Management | $1.77M | 0.0% |
| Norges Bank | $570,000 | 0.0% |
Exited
| Citadel Advisors | $1.80M | was 0.0% |
| Two Sigma Investments | $223,383 | was 0.0% |
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.
Frequently co-owned
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)
Aug 14
Hanson Scott McLean
Officer, Director · 800 sh · $50,605
Aug 14
Hanson Scott McLean
Officer, Director · 5.40K sh · $347,793
Aug 14
Hanson Scott McLean
Officer, Director · 800 sh · $52,241
Aug 14
Esaka Fumihide
Officer, Director · 1.28K sh · $81,132
Aug 14
Esaka Fumihide
Officer, Director · 10.72K sh · $690,201
Aug 14
Esaka Fumihide
Officer, Director · 1.50K sh · $97,893
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 14
SC 13G/A — T. Rowe Price Investment Management…
Jul 27
SC 13G — BlackRock, Inc.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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