130 tracked 13F filers disclose a position in AMBQ as of the latest SEC 13F filings, a combined $574.0M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | T. Rowe Price Investment Management, Inc. | Withheld | 1.3M | ▲New +1.3M sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $25.7M | 1.0M | ▲+229% Added · +705K sh | Q1 2026 | |
| 3 | Atreides Management, LP | $77.4M | 877K | ▲+1.7% Added · +15K sh | Q2 2026 | |
| 4 | STATE STREET CORP | $76.1M | 862K | ▲+231% Added · +602K sh | Q2 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $18.0M | 707K | →First observed position No prior filed position | Q1 2026 | |
| 6 | ALLIANCEBERNSTEIN L.P. | $19.6M | 686K | ▲+74% Added · +291K sh | Q1 2026 | |
| 7 | FRANKLIN TEMPLETON INC | $13.8M | 542K | ▲+76% Added · +234K sh | Q1 2026 | |
| 8 | GOLDMAN SACHS GROUP INC | $10.5M | 413K | ▲+213% Added · +281K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $30.0M | 339K | ▲+14% Added · +42K sh | Q2 2026 | |
| 10 | Schonfeld Strategic Advisors LLC | $27.9M | 315K | ▼−52% Reduced · −341K sh | Q2 2026 | |
| 11 | SILVERCREST ASSET MANAGEMENT GROUP LLC | $7.2M | 282K | ▲+50% Added · +94K sh | Q1 2026 | |
| 12 | First Eagle Investment Management, LLC | $21.6M | 244K | ▼−12% Reduced · −35K sh | Q2 2026 | |
| 13 | EMERALD ADVISERS, LLC | $21.5M | 244K | ▲New +244K sh | Q2 2026 | |
| 14 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | $19.7M | 223K | ▲New +223K sh | Q2 2026 | |
| 15 | Walleye Capital LLC | $18.9M | 215K | ▲19× Added · +203K sh | Q2 2026 | |
| 16 | Polar Asset Management Partners Inc. | $5.1M | 201K | ▲+672% Added · +175K sh | Q1 2026 | |
| 17 | NEEDHAM INVESTMENT MANAGEMENT LLC | $5.1M | 200K | ▲New +200K sh | Q1 2026 | |
| 18 | S SQUARED TECHNOLOGY, LLC | $4.9M | 193K | ▲New +193K sh | Q1 2026 | |
| 19 | MILLENNIUM MANAGEMENT LLC | $4.5M | 178K | ▲+186% Added · +116K sh | Q1 2026 | |
| 20 | UBS Group AG | $4.2M | 166K | ▲+363% Added · +130K sh | Q1 2026 | |
| 21 | GILDER GAGNON HOWE & CO LLC | $14.1M | 160K | ▲+46% Added · +50K sh | Q2 2026 | |
| 22 | EMERALD MUTUAL FUND ADVISERS TRUST | $14.1M | 159K | ▲New +159K sh | Q2 2026 | |
| 23 | VANGUARD PORTFOLIO MANAGEMENT LLC | $4.0M | 159K | →First observed position No prior filed position | Q1 2026 | |
| 24 | CITADEL ADVISORS LLC | $10.8M | 122K | ▲New +122K sh | Q2 2026 | |
| 25 | Hood River Capital Management LLC | $10.7M | 122K | ▲New +122K sh | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 36 funds opened a new position in AMBQ and 18 added to an existing one, while 9 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 62 funds | $186.9B |
| MICROSOFT CORPMSFT | 62 funds | $130.7B |
| AMAZON.COM INCAMZN | 61 funds | $90.4B |
| ALPHABET INC-CL AGOOGL | 60 funds | $71.3B |
| META PLATFORMS INC-CLASS AMETA | 60 funds | $56.0B |
| MICRON TECHNOLOGY INCMU | 59 funds | $14.9B |
| GENERAL ELECTRICGE | 57 funds | $14.5B |
| JPMORGAN CHASE & COJPM | 56 funds | $29.5B |
| GUARDANT HEALTH INCGH | 56 funds | $3.0B |
| COSTCO WHOLESALE CORPCOST | 55 funds | $16.0B |
| LAM RESEARCH CORPLRCX | 55 funds | $14.2B |
| CHEVRON CORPCVX | 55 funds | $14.0B |
Ranked by how many of AMBQ's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 2, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 10K | $544K |
| Sep 2, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 1K | $82K |
| Sep 1, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 49K | $2.8M |
| Aug 31, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 6K | $327K |
| Aug 31, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 14K | $796K |
| Aug 31, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 16K | $886K |
| Aug 31, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 2K | $123K |
| Aug 31, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 6K | $318K |
| Aug 31, 2026 | Esaka Fumihide | Chief Executive Officer, Director | Sell (S) | 6K | $335K |
| Aug 27, 2026 | Hanson Scott McLean | Chief Technology Officer, Director | Sell (S) | 5K | $296K |
| Aug 27, 2026 | Hanson Scott McLean | Chief Technology Officer, Director | Sell (S) | 23K | $1.3M |
| Aug 26, 2026 | Hanson Scott McLean | Chief Technology Officer, Director | Sell (S) | 28K | $1.6M |
Connected entities for AMBQ
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/AMBQ/capital-change-brief"
Use Arkolith's capital_change_brief for AMBQ. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for AMBQ. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.