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
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 $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

Simplex Trading's NBBK Position: Q1 2026 in Review

Simplex Trading opened a new position in NB Bancorp (NBBK) in Q1 2026: 877 shares worth $18.5K. The stake represents ﹤0.01% of the portfolio and ranks #6841 among its holdings. This is a return to the name: Simplex Trading previously reported a position in NBBK as recently as Q2 2025.

Simplex Trading first reported a position in NBBK in Q2 2024 and has held it in 4 quarters since. 176 funds tracked by Wall St. Rank hold NBBK as of Q1 2026.

  • Simplex Trading held 877 shares of NB Bancorp worth $18.5K as of Q1 2026.
  • NB Bancorp was a new Simplex Trading position in Q1 2026.
  • NB Bancorp made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #6841 holding.
  • Simplex Trading first reported a position in NB Bancorp in Q2 2024 and has held it in 4 quarters since.
  • 176 funds tracked by Wall St. Rank held NB Bancorp as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.