Jane Street
NBBK icon

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
Q1 		– Sell
-10,500
Closed -$208K – 12499
2025
Q4 		$208K Buy
+10,500
New +$200K ﹤0.01% 9639
2025
Q1 		– Sell
-35,400
Closed -$639K – 10202
2024
Q4 		$639K Hold
35,400
– – ﹤0.01% 6252
2024
Q3 		$657K Buy
+35,400
New +$626K ﹤0.01% 6710

Other funds holding NBBK

BlackRock
BlackRock New York $5.72T AUM 30.48% 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 $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 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 $299M AUM 54.55% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Jane Street's NBBK Position: Q1 2026 in Review

Jane Street reduced its NB Bancorp (NBBK) stake by 26% in Q1 2026, selling an estimated $441K and leaving 60,669 shares worth $1.28M. The position accounts for ﹤0.01% of the portfolio, ranked #5978.

Jane Street first reported a position in NBBK in Q1 2024 and has held it in 8 quarters since. The position peaked at $1.62M in Q4 2025. 176 funds tracked by Wall St. Rank hold NBBK as of Q1 2026.

  • Jane Street held 60,669 shares of NB Bancorp worth $1.28M as of Q1 2026.
  • Jane Street sold 20,972 NB Bancorp shares in Q1 2026, an estimated $441K.
  • NB Bancorp made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #5978 holding.
  • Jane Street first reported a position in NB Bancorp in Q1 2024 and has held it in 8 quarters since.
  • Jane Street's NB Bancorp position peaked at $1.62M in Q4 2025.
  • 176 funds tracked by Wall St. Rank held NB Bancorp as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.