Jane Street
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Jane Street’s NB Bancorp NBBK Stock Holding History

Jane Street’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 		– Sell
-60,669
Closed -$1.28M – 12591
2026
Q1 		$1.28M Sell
60,669
-20,972
-26% -$441K ﹤0.01% 5978
2025
Q4 		$1.62M Buy
81,641
+27,450
+51% +$522K ﹤0.01% 5210
2025
Q3 		$956K Buy
54,191
+27,507
+103% +$505K ﹤0.01% 6398
2025
Q2 		$477K Sell
26,684
-27,929
-51% -$472K ﹤0.01% 7010
2025
Q1 		$987K Buy
+54,613
New +$1.02M ﹤0.01% 5601
2024
Q4 		– Sell
-63,592
Closed -$1.22M – 10163
2024
Q3 		$1.18M Buy
63,592
+49,943
+366% +$883K ﹤0.01% 5554
2024
Q2 		$206K Buy
13,649
+3,474
+34% +$50.6K ﹤0.01% 8338
2024
Q1 		$139K Buy
+10,175
New +$142K ﹤0.01% 8385

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 53.78% 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

Jane Street's NBBK Position: Q2 2026 in Review

Jane Street sold out of NB Bancorp (NBBK) in Q2 2026, closing a stake of 60,669 shares — an estimated $1.28M sold.

Jane Street first reported a position in NBBK in Q1 2024 and held it in 8 quarters. The position peaked at $1.62M in Q4 2025. 159 funds tracked by Wall St. Rank hold NBBK as of Q2 2026.

  • Jane Street reported no remaining NB Bancorp position as of Q2 2026 after selling out during the quarter.
  • Jane Street sold 60,669 NB Bancorp shares in Q2 2026, an estimated $1.28M.
  • Jane Street first reported a position in NB Bancorp in Q1 2024 and held it in 8 quarters.
  • Jane Street's NB Bancorp position peaked at $1.62M in Q4 2025.
  • 159 funds tracked by Wall St. Rank held NB Bancorp as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.