NBBK NB Bancorp, Inc.
NB Bancorp, Inc. (NBBK) 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 |
|---|---|---|---|---|---|---|
| MARSHALL WACE, LLP Long/Short | New | +123.1K | — | $2.6M | 0.0% | 58 |
| CITADEL ADVISORS LLC Quant | Increased | +173.4K | +149.0% | $3.7M | 0.0% | 54 |
| D. E. Shaw & Co., Inc. Quant | Increased | +79.5K | +113.0% | $1.7M | 0.0% | 54 |
| Trexquant Investment Quant | New | +46.3K | — | $978.6K | 0.0% | 51 |
| Y-Intercept Quant | New | +54.5K | — | $1.2M | 0.0% | 50 |
| Brevan Howard Capital Management Macro | Sold Out | -10.7K | -100.0% | $226.2K | 0.0% | 49 |
| Quantbot Technologies Quant | Sold Out | -10.5K | -100.0% | $222.6K | 0.0% | 45 |
| RENAISSANCE TECHNOLOGIES LLC Quant | Reduced | -132.5K | -50.2% | $2.8M | 0.0% | 42 |
| MILLENNIUM MANAGEMENT LLC | Reduced | -76.8K | -48.5% | $1.6M | 0.0% | 40 |
| TWO SIGMA INVESTMENTS, LP Quant | Reduced | -94.8K | -25.5% | $2.0M | 0.0% | 34 |
Most significant buyers
By move score, not size.
- MARSHALL WACE, LLP
- CITADEL ADVISORS LLC
- D. E. Shaw & Co., Inc.
- Trexquant Investment
- Y-Intercept
Most significant sellers
By move score, not size.
- Brevan Howard Capital Management
- Quantbot Technologies
- RENAISSANCE TECHNOLOGIES LLC
- MILLENNIUM MANAGEMENT LLC
- TWO SIGMA INVESTMENTS, LP
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| MARSHALL WACE, LLP | 2 | 123.1K | 0 | +123.1K | — | 0.0% | New | 58 |
| CITADEL ADVISORS LLC | 1 | 289.8K | 116.4K | +173.4K | +149.0% | 0.0% | Increased | 54 |
| D. E. Shaw & Co., Inc. | 1 | 149.9K | 70.4K | +79.5K | +113.0% | 0.0% | Increased | 54 |
| Trexquant Investment | 3 | 46.3K | 0 | +46.3K | — | 0.0% | New | 51 |
| Y-Intercept | 4 | 54.5K | 0 | +54.5K | — | 0.0% | New | 50 |
| Brevan Howard Capital Management | 3 | 0 | 10.7K | -10.7K | -100.0% | 0.0% | Sold Out | 49 |
| Quantbot Technologies | 4 | 0 | 10.5K | -10.5K | -100.0% | 0.0% | Sold Out | 45 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 131.4K | 263.9K | -132.5K | -50.2% | 0.0% | Reduced | 42 |
| MILLENNIUM MANAGEMENT LLC | 2 | 81.4K | 158.2K | -76.8K | -48.5% | 0.0% | Reduced | 40 |
| TWO SIGMA INVESTMENTS, LP | 2 | 277.0K | 371.8K | -94.8K | -25.5% | 0.0% | Reduced | 34 |
| Qube Research & Technologies Ltd | 2 | 127.2K | 175.1K | -47.8K | -27.3% | 0.0% | Reduced | 33 |
| ExodusPoint Capital Management | 3 | 15.5K | 14.4K | +1.1K | +7.3% | 0.0% | Increased | 23 |
| AQR Capital Management | 3 | 116.3K | 128.8K | -12.5K | -9.7% | 0.0% | Reduced | 22 |
| Aquatic Capital Management | 4 | 1.5K | 1.6K | -56 | -3.5% | 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.