Jim Simons
NBBK icon

Jim Simons’s NB Bancorp NBBK Stock Holding History

Jim Simons’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
Q1 		$5.56M Buy
263,906
+12,632
+5% +$266K 0.01% 1323
2025
Q4 		$4.98M Buy
251,274
+140,374
+127% +$2.67M 0.01% 1306
2025
Q3 		$1.96M Sell
110,900
-33,248
-23% -$610K ﹤0.01% 2089
2025
Q2 		$2.57M Sell
144,148
-58,052
-29% -$980K ﹤0.01% 1955
2025
Q1 		$3.65M Buy
202,200
+36,700
+22% +$682K 0.01% 1615
2024
Q4 		$2.99M Buy
165,500
+89,300
+117% +$1.72M ﹤0.01% 1783
2024
Q3 		$1.41M Buy
76,200
+5,500
+8% +$97.2K ﹤0.01% 2241
2024
Q2 		$1.07M Buy
70,700
+55,200
+356% +$804K ﹤0.01% 2284
2024
Q1 		$212K Buy
+15,500
New +$217K ﹤0.01% 3210

Other funds holding NBBK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PP
Pertento Partners London, United Kingdom $1.37B AUM 36.36% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
AC
AltraVue Capital Bellevue, Washington $1.16B AUM 46.45% 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
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
TCM
Tieton Capital Management Yakima, Washington $348M AUM 45.13% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Jim Simons's NBBK Position: Q1 2026 in Review

Jim Simons increased its NB Bancorp (NBBK) stake by 5% in Q1 2026, buying an estimated $266K and bringing the position to 263,906 shares worth $5.56M. The position accounts for 0.01% of the portfolio, ranked #1323.

Jim Simons first reported a position in NBBK in Q1 2024 and has held it in 9 quarters since. 177 funds tracked by Wall St. Rank hold NBBK as of Q1 2026.

  • Jim Simons held 263,906 shares of NB Bancorp worth $5.56M as of Q1 2026.
  • Jim Simons bought 12,632 NB Bancorp shares in Q1 2026, an estimated $266K.
  • NB Bancorp made up 0.01% of Jim Simons's portfolio in Q1 2026, its #1323 holding.
  • Jim Simons first reported a position in NB Bancorp in Q1 2024 and has held it in 9 quarters since.
  • 177 funds tracked by Wall St. Rank held NB Bancorp as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.