NB BANCORP INC (NBBK): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in NBBK · Financials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
11
13F filers
Aggregate Value
$28.5M
Across holders
Last Price
$22.51
2026-08-24
Sector
Financials
GICS
Quarterly fund activity4 increased6 reduced1 exited
Full exits: Brevan Howard Capital Management LP
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 290K | $6.1M | 21.5% | 0.0% | Added | +$5.6M | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 277K | $5.9M | 20.5% | 0.0% | Reduced | $-2.0M | Q2 2026 |
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 150K | $3.2M | 11.1% | 0.0% | Added | +$194K | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 131K | $2.8M | 9.7% | 0.0% | Reduced | $-2.8M | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 127K | $2.7M | 9.4% | 0.0% | Reduced | $-1.0M | Q2 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 123K | $2.6M | 9.1% | 0.0% | Added | — | Q2 2026 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 116K | $2.5M | 8.6% | 0.0% | Reduced | +$2.4M | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 81K | $1.7M | 6.0% | 0.0% | Reduced | $-1.6M | Q2 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 | Hedge Fund | 36K | $760K | 2.7% | 0.0% | Reduced | $-91K | Q2 2026 |
| ExodusPoint Capital Management, LP CIK 0001736225 | Hedge Fund | 15K | $327K | 1.1% | 0.0% | Added | — | Q2 2026 |
Added
Hedge Fund
$6.1M· 21.5% of total· 0.0% port· 290K sh· +$5.6M QoQ· Q2 2026
Reduced
Hedge Fund
$5.9M· 20.5% of total· 0.0% port· 277K sh· $-2.0M QoQ· Q2 2026
Added
Hedge Fund
$3.2M· 11.1% of total· 0.0% port· 150K sh· +$194K QoQ· Q2 2026
Reduced
Hedge Fund
$2.8M· 9.7% of total· 0.0% port· 131K sh· $-2.8M QoQ· Q2 2026
Reduced
Hedge Fund
$2.7M· 9.4% of total· 0.0% port· 127K sh· $-1.0M QoQ· Q2 2026
Added
Hedge Fund
$2.6M· 9.1% of total· 0.0% port· 123K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$2.5M· 8.6% of total· 0.0% port· 116K sh· +$2.4M QoQ· Q2 2026
Reduced
Hedge Fund
$1.7M· 6.0% of total· 0.0% port· 81K sh· $-1.6M QoQ· Q2 2026
Reduced
Hedge Fund
$760K· 2.7% of total· 0.0% port· 36K sh· $-91K QoQ· Q2 2026
Added
Hedge Fund
$327K· 1.1% of total· 0.0% port· 15K sh· — QoQ· Q2 2026
Unchanged
Hedge Fund
$32K· 0.1% of total· 0.0% port· 2K sh· +$0 QoQ· Q2 2026
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