Simplex Trading
NBBK icon

Simplex Trading’s NB Bancorp NBBK Stock Holding History

Simplex Trading’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 		$21.1K Buy
+1,000
New +$20.6K ﹤0.01% 7058
2026
Q1 		– Sell
-21,900
Closed -$434K – 9775
2025
Q4 		$434K Buy
21,900
+13,400
+158% +$255K ﹤0.01% 3434
2025
Q3 		$150K Buy
+8,500
New +$156K ﹤0.01% 5273
2025
Q2 		– Sell
-6,200
Closed -$112K – 9368
2025
Q1 		$112K Buy
6,200
+1,900
+44% +$35.3K ﹤0.01% 4947
2024
Q4 		$77K Buy
4,300
+3,200
+291% +$61.5K ﹤0.01% 5428
2024
Q3 		$20K Buy
+1,100
New +$19.4K ﹤0.01% 6679

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

Simplex Trading's NBBK Position: Q2 2026 in Review

Simplex Trading increased its NB Bancorp (NBBK) stake by 100% in Q2 2026, buying an estimated $18K and bringing the position to 1,751 shares worth $37K. The position accounts for ﹤0.01% of the portfolio, ranked #6585.

Simplex Trading first reported a position in NBBK in Q2 2024 and has held it in 5 quarters since. 161 funds tracked by Wall St. Rank hold NBBK as of Q2 2026.

  • Simplex Trading held 1,751 shares of NB Bancorp worth $37K as of Q2 2026.
  • Simplex Trading bought 874 NB Bancorp shares in Q2 2026, an estimated $18K.
  • NB Bancorp made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #6585 holding.
  • Simplex Trading first reported a position in NB Bancorp in Q2 2024 and has held it in 5 quarters since.
  • 161 funds tracked by Wall St. Rank held NB Bancorp as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.