State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s NB Bancorp NBBK Stock Holding History

State of Wisconsin Investment Board’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 		$514K Sell
24,386
-2,255
-8% -$47.4K ﹤0.01% 1990
2025
Q4 		$528K Buy
+26,641
New +$507K ﹤0.01% 1930

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 $1.61T 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 $348M AUM 45.13% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

State of Wisconsin Investment Board's NBBK Position: Q1 2026 in Review

State of Wisconsin Investment Board reduced its NB Bancorp (NBBK) stake by 8.5% in Q1 2026, selling an estimated $47.4K and leaving 24,386 shares worth $514K. The position accounts for ﹤0.01% of the portfolio, ranked #1990.

State of Wisconsin Investment Board first reported a position in NBBK in Q4 2025 and has held it in 2 quarters since. The position peaked at $528K in Q4 2025. 177 funds tracked by Wall St. Rank hold NBBK as of Q1 2026.

  • State of Wisconsin Investment Board held 24,386 shares of NB Bancorp worth $514K as of Q1 2026.
  • State of Wisconsin Investment Board sold 2,255 NB Bancorp shares in Q1 2026, an estimated $47.4K.
  • NB Bancorp made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #1990 holding.
  • State of Wisconsin Investment Board first reported a position in NB Bancorp in Q4 2025 and has held it in 2 quarters since.
  • State of Wisconsin Investment Board's NB Bancorp position peaked at $528K in Q4 2025.
  • 177 funds tracked by Wall St. Rank held NB Bancorp as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.