Citadel Advisors
NBBK icon

Citadel Advisors’s NB Bancorp NBBK Stock Holding History

Citadel Advisors’s Portfolio NBBK Stock Details NBBK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$6.12M Buy
289,814
+173,443
+149% +$3.57M ﹤0.01% 4384
2026
Q1 		$2.45M Buy
116,371
+9,914
+9% +$208K ﹤0.01% 5665
2025
Q4 		$2.11M Buy
106,457
+47,130
+79% +$897K ﹤0.01% 5807
2025
Q3 		$1.05M Buy
59,327
+40,432
+214% +$742K ﹤0.01% 7441
2025
Q2 		$337K Buy
+18,895
New +$319K ﹤0.01% 9537
2025
Q1 		– Sell
-6,210
Closed -$115K – 15222
2024
Q4 		$112K Buy
+6,210
New +$119K ﹤0.01% 11297

Other funds holding NBBK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AC
AltraVue Capital Bellevue, Washington $1.39B AUM 53.77% 1-Year Est. Return
PP
Pertento Partners London, United Kingdom $1.86B AUM 53.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
TCM
Tieton Capital Management Yakima, Washington $348M AUM 45.13% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $34.3B AUM 22.63% 1-Year Est. Return

Citadel Advisors's NBBK Position: Q2 2026 in Review

Citadel Advisors increased its NB Bancorp (NBBK) stake by 149% in Q2 2026, buying an estimated $3.57M and bringing the position to 289,814 shares worth $6.12M. The position accounts for ﹤0.01% of the portfolio, ranked #4384.

Citadel Advisors first reported a position in NBBK in Q4 2024 and has held it in 6 quarters since. 161 funds tracked by Wall St. Rank hold NBBK as of Q2 2026.

  • Citadel Advisors held 289,814 shares of NB Bancorp worth $6.12M as of Q2 2026.
  • Citadel Advisors bought 173,443 NB Bancorp shares in Q2 2026, an estimated $3.57M.
  • NB Bancorp made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #4384 holding.
  • Citadel Advisors first reported a position in NB Bancorp in Q4 2024 and has held it in 6 quarters since.
  • 161 funds tracked by Wall St. Rank held NB Bancorp as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.