SEI Investments
NBBK icon

SEI Investments’s NB Bancorp NBBK Stock Holding History

SEI Investments’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 		$3.01M Sell
142,346
-159,835
-53% -$3.29M ﹤0.01% 1753
2026
Q1 		$6.37M Buy
302,181
+158,397
+110% +$3.33M 0.01% 1391
2025
Q4 		$2.85M Buy
143,784
+120,281
+512% +$2.29M ﹤0.01% 1673
2025
Q3 		$415K Buy
23,503
+4,400
+23% +$80.7K ﹤0.01% 2322
2025
Q2 		$341K Hold
19,103
– – ﹤0.01% 2356
2025
Q1 		$345K Hold
19,103
– – ﹤0.01% 2278
2024
Q4 		$345K Buy
19,103
+4,900
+34% +$94.1K ﹤0.01% 2305
2024
Q3 		$264K Buy
+14,203
New +$251K ﹤0.01% 2395

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

SEI Investments's NBBK Position: Q2 2026 in Review

SEI Investments reduced its NB Bancorp (NBBK) stake by 53% in Q2 2026, selling an estimated $3.29M and leaving 142,346 shares worth $3.01M. The position accounts for ﹤0.01% of the portfolio, ranked #1753.

SEI Investments first reported a position in NBBK in Q3 2024 and has held it in 8 quarters since. The position peaked at $6.37M in Q1 2026. 161 funds tracked by Wall St. Rank hold NBBK as of Q2 2026.

  • SEI Investments held 142,346 shares of NB Bancorp worth $3.01M as of Q2 2026.
  • SEI Investments sold 159,835 NB Bancorp shares in Q2 2026, an estimated $3.29M.
  • NB Bancorp made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #1753 holding.
  • SEI Investments first reported a position in NB Bancorp in Q3 2024 and has held it in 8 quarters since.
  • SEI Investments's NB Bancorp position peaked at $6.37M in Q1 2026.
  • 161 funds tracked by Wall St. Rank held NB Bancorp as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.