AMBQ Ambiq Micro, Inc.
Ambiq Micro, Inc. (AMBQ) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| D. E. Shaw & Co., Inc. Quant | New | +983.9K | — | $86.9M | 0.1% | 64 |
| CITADEL ADVISORS LLC Quant | New | +122.4K | — | $10.8M | 0.0% | 62 |
| Point72 Asset Management, L.P. | New | +77.2K | — | $6.8M | 0.0% | 61 |
| Polar Asset Management Partners Long/Short | Sold Out | -201.3K | -100.0% | $17.8M | 0.0% | 58 |
| MARSHALL WACE, LLP Long/Short | New | +109.5K | — | $9.7M | 0.0% | 58 |
| Voloridge Investment Management Quant | New | +223.3K | — | $19.7M | 0.1% | 58 |
| TWO SIGMA INVESTMENTS, LP Quant | Increased | +615.0K | +1671.4% | $54.3M | 0.0% | 57 |
| Ilex Capital Partners Long/Short | New | +13.5K | — | $1.2M | 0.0% | 57 |
| RENAISSANCE TECHNOLOGIES LLC Quant | Increased | +172.2K | +404.1% | $15.2M | 0.0% | 56 |
| Woodline Partners LP Long/Short | New | +64.5K | — | $5.7M | 0.0% | 56 |
Most significant buyers
By move score, not size.
- D. E. Shaw & Co., Inc.
- CITADEL ADVISORS LLC
- Point72 Asset Management, L.P.
- MARSHALL WACE, LLP
- Voloridge Investment Management
Most significant sellers
By move score, not size.
- Polar Asset Management Partners
- CenterBook Partners
- Alyeska Investment Group, L.P.
- Aquatic Capital Management
- Schonfeld Strategic Advisors
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| D. E. Shaw & Co., Inc. | 1 | 983.9K | 0 | +983.9K | — | 0.1% | New | 64 |
| CITADEL ADVISORS LLC | 1 | 122.4K | 0 | +122.4K | — | 0.0% | New | 62 |
| Point72 Asset Management, L.P. | 1 | 77.2K | 0 | +77.2K | — | 0.0% | New | 61 |
| Polar Asset Management Partners | 3 | 0 | 201.3K | -201.3K | -100.0% | 0.0% | Sold Out | 58 |
| MARSHALL WACE, LLP | 2 | 109.5K | 0 | +109.5K | — | 0.0% | New | 58 |
| Voloridge Investment Management | 2 | 223.3K | 0 | +223.3K | — | 0.1% | New | 58 |
| TWO SIGMA INVESTMENTS, LP | 2 | 651.8K | 36.8K | +615.0K | +1671.4% | 0.0% | Increased | 57 |
| Ilex Capital Partners | 2 | 13.5K | 0 | +13.5K | — | 0.0% | New | 57 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 214.8K | 42.6K | +172.2K | +404.1% | 0.0% | Increased | 56 |
| Woodline Partners LP | 2 | 64.5K | 0 | +64.5K | — | 0.0% | New | 56 |
| Tudor Investment Corporation | 2 | 49.5K | 0 | +49.5K | — | 0.0% | New | 56 |
| LMR Partners | 3 | 50.0K | 0 | +50.0K | — | 0.1% | New | 55 |
| Magnetar Capital | 2 | 4.9K | 0 | +4.9K | — | 0.0% | New | 54 |
| Voleon Capital Management | 3 | 76.0K | 0 | +76.0K | — | 0.1% | New | 53 |
| Trexquant Investment | 3 | 73.6K | 0 | +73.6K | — | 0.0% | New | 53 |
| Lighthouse Investment Partners | 3 | 12.8K | 0 | +12.8K | — | 0.0% | New | 53 |
| Jain Global | 3 | 8.0K | 0 | +8.0K | — | 0.0% | New | 52 |
| Ghisallo Capital Management | 2 | 75.0K | 20.0K | +55.0K | +275.0% | 0.2% | Increased | 52 |
| CenterBook Partners | 4 | 0 | 55.6K | -55.6K | -100.0% | 0.0% | Sold Out | 51 |
| AQR Capital Management | 3 | 6.8K | 0 | +6.8K | — | 0.0% | New | 51 |
| Squarepoint Ops LLC | 2 | 63.2K | 9.0K | +54.2K | +603.5% | 0.0% | Increased | 51 |
| Walleye Capital | 3 | 214.5K | 11.4K | +203.1K | +1777.0% | 0.2% | Increased | 50 |
| Brevan Howard Capital Management | 3 | 2.5K | 0 | +2.5K | — | 0.0% | New | 49 |
| Alyeska Investment Group, L.P. | 2 | 10.3K | 78.3K | -68.0K | -86.8% | 0.0% | Reduced | 49 |
| Boothbay Fund Management | 4 | 7.1K | 0 | +7.1K | — | 0.0% | New | 49 |
| Centiva Capital | 4 | 3.5K | 0 | +3.5K | — | 0.0% | New | 48 |
| Aquatic Capital Management | 4 | 0 | 779 | -779 | -100.0% | 0.0% | Sold Out | 48 |
| Engineers Gate | 4 | 5.9K | 0 | +5.9K | — | 0.0% | New | 48 |
| MILLENNIUM MANAGEMENT LLC | 2 | 289.2K | 177.6K | +111.7K | +62.9% | 0.0% | Increased | 44 |
| Schonfeld Strategic Advisors | 3 | 315.5K | 656.6K | -341.1K | -52.0% | 0.2% | Reduced | 38 |
| Atreides Management | 1 | 877.1K | 862.2K | +14.9K | +1.7% | 0.7% | Increased | 36 |
| Quadrature Capital | 3 | 16.4K | 11.1K | +5.4K | +48.7% | 0.0% | Increased | 34 |
| Readystate Asset Management | 3 | 37.9K | 41.9K | -4.0K | -9.5% | 0.2% | Reduced | 22 |
| Quantbot Technologies | 4 | 12.8K | 15.2K | -2.3K | -15.3% | 0.0% | Reduced | 18 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.