AMBQ Ambiq Micro, Inc.
Ambiq Micro, Inc. (AMBQ) Institutional Ownership
What the institutions did with AMBQ last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 1.4M | 7.9% |
| T. Rowe Price Investment Management, Inc. | 1.0M | 5.8% |
| D. E. Shaw & Co., Inc. | 983.9K | 5.6% |
| Atreides Management, LP | 877.1K | 5.0% |
| STATE STREET CORP | 862.0K | 4.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 768.5K | 4.4% |
| TWO SIGMA INVESTMENTS, LP | 651.8K | 3.7% |
| ALLIANCEBERNSTEIN L.P. | 609.6K | 3.5% |
| First Eagle Investment Management, LLC | 488.8K | 2.8% |
| GOLDMAN SACHS GROUP INC | 447.0K | 2.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 339.3K | 1.9% |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 323.7K | 1.9% |
| Schonfeld Strategic Advisors LLC | 315.5K | 1.8% |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 309.1K | 1.8% |
| JANE STREET GROUP, LLC | 294.8K | 1.7% |
| MILLENNIUM MANAGEMENT LLC | 289.2K | 1.7% |
| Driehaus Capital Management LLC | 289.0K | 1.7% |
| NEUBERGER BERMAN GROUP LLC | 272.1K | 1.6% |
| EMERALD ADVISERS, LLC | 243.7K | 1.4% |
| HRT FINANCIAL LP | 225.6K | 1.3% |
| FRANKLIN RESOURCES INC | 223.8K | 1.3% |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 223.3K | 1.3% |
| COOPER CREEK PARTNERS MANAGEMENT LLC | 220.0K | 1.3% |
| RENAISSANCE TECHNOLOGIES LLC | 214.8K | 1.2% |
| Walleye Capital LLC | 214.5K | 1.2% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| D. E. Shaw & Co., Inc. | New | 0 | 983.9K | +983.9K |
| TWO SIGMA INVESTMENTS, LP | Increased | 36.8K | 651.8K | +615.0K |
| STATE STREET CORP | Increased | 260.2K | 862.0K | +601.8K |
| BlackRock, Inc. | Increased | 1.0M | 1.4M | +367.5K |
| Schonfeld Strategic Advisors LLC | Reduced | 656.6K | 315.5K | -341.1K |
| FRANKLIN RESOURCES INC | Reduced | 542.2K | 223.8K | -318.5K |
| JANE STREET GROUP, LLC | New | 0 | 294.8K | +294.8K |
| NEUBERGER BERMAN GROUP LLC | New | 0 | 272.1K | +272.1K |
| T. Rowe Price Investment Management, Inc. | Reduced | 1.3M | 1.0M | -261.2K |
| EMERALD ADVISERS, LLC | New | 0 | 243.7K | +243.7K |
| HRT FINANCIAL LP | New | 0 | 225.6K | +225.6K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | New | 0 | 223.3K | +223.3K |
| COOPER CREEK PARTNERS MANAGEMENT LLC | New | 0 | 220.0K | +220.0K |
| First Eagle Investment Management, LLC | Increased | 279.1K | 488.8K | +209.7K |
| Walleye Capital LLC | Increased | 11.4K | 214.5K | +203.1K |
| Polar Asset Management Partners Inc. | Sold Out | 201.3K | 0 | -201.3K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 3.9K | 204.2K | +200.3K |
| WASATCH ADVISORS LP | Reduced | 254.3K | 81.6K | -172.7K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 42.6K | 214.8K | +172.2K |
| WELLINGTON MANAGEMENT GROUP LLP | New | 0 | 168.1K | +168.1K |
| EMERALD MUTUAL FUND ADVISERS TRUST | New | 0 | 159.1K | +159.1K |
| BANK OF AMERICA CORP /DE/ | Increased | 48.0K | 203.3K | +155.2K |
| MORGAN STANLEY | Increased | 31.4K | 182.0K | +150.6K |
| DEUTSCHE BANK AG\ | Increased | 23.0K | 165.4K | +142.4K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 14.9K | 156.9K | +142.0K |
| UBS Group AG | Reduced | 165.8K | 35.8K | -130.1K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | New | 0 | 126.0K | +126.0K |
| JPMORGAN CHASE & CO | Increased | 76.5K | 200.8K | +124.3K |
| NEEDHAM INVESTMENT MANAGEMENT LLC | Increased | 200.0K | 323.7K | +123.7K |
| CITADEL ADVISORS LLC | New | 0 | 122.4K | +122.4K |
| Hood River Capital Management LLC | New | 0 | 121.7K | +121.7K |
| LORD, ABBETT & CO. LLC | New | 0 | 118.4K | +118.4K |
| MILLENNIUM MANAGEMENT LLC | Increased | 177.6K | 289.2K | +111.7K |
| MARSHALL WACE, LLP | New | 0 | 109.5K | +109.5K |
| Monashee Investment Management LLC | Sold Out | 103.8K | 0 | -103.8K |
| Nuveen, LLC | Increased | 35.7K | 139.0K | +103.2K |
| BARCLAYS PLC | Increased | 4.7K | 99.7K | +95.0K |
| Driehaus Capital Management LLC | Reduced | 380.8K | 289.0K | -91.8K |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | Reduced | 155.6K | 66.7K | -88.9K |
| Moody Aldrich Partners LLC | New | 0 | 81.4K | +81.4K |
| ACADIAN ASSET MANAGEMENT LLC | New | 0 | 78.9K | +78.9K |
| Point72 Asset Management, L.P. | New | 0 | 77.2K | +77.2K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 686.1K | 609.6K | -76.5K |
| Voleon Capital Management LP | New | 0 | 76.0K | +76.0K |
| Public Sector Pension Investment Board | New | 0 | 75.2K | +75.2K |
| Trexquant Investment LP | New | 0 | 73.6K | +73.6K |
| Roubaix Capital, LLC | Reduced | 125.8K | 53.3K | -72.6K |
| S SQUARED TECHNOLOGY, LLC | Reduced | 192.8K | 120.8K | -72.0K |
| Alyeska Investment Group, L.P. | Reduced | 78.3K | 10.3K | -68.0K |
| ALGERT GLOBAL LLC | New | 0 | 66.0K | +66.0K |
| Woodline Partners LP | New | 0 | 64.5K | +64.5K |
| LAZARD ASSET MANAGEMENT LLC | Sold Out | 64.2K | 0 | -64.2K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 707.4K | 768.5K | +61.1K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Reduced | 92.6K | 35.4K | -57.2K |
| CenterBook Partners LP | Sold Out | 55.6K | 0 | -55.6K |
| Ghisallo Capital Management LLC | Increased | 20.0K | 75.0K | +55.0K |
| Squarepoint Ops LLC | Increased | 9.0K | 63.2K | +54.2K |
| Informed Momentum Co LLC | New | 0 | 51.0K | +51.0K |
| GILDER GAGNON HOWE & CO LLC | Increased | 109.6K | 159.6K | +50.0K |
| Burkehill Global Management, LP | New | 0 | 50.0K | +50.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.