Marshall Wace’s NB Bancorp NBBK Stock Holding History

Marshall Wace’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	$2.6M	Buy	+123,112	New	+$2.53M	﹤0.01%	1705
2026 Q1	–	Sell	-251,512	Closed	-$4.98M	–	3527
2025 Q4	$4.98M	Sell	251,512 -25,588	-9%	-$487K	﹤0.01%	1160
2025 Q3	$4.89M	Sell	277,100 -38,360	-12%	-$704K	0.01%	1185
2025 Q2	$5.63M	Buy	315,460 +196,837	+166%	+$3.32M	0.01%	1085
2025 Q1	$2.14M	Buy	+118,623	New	+$2.21M	﹤0.01%	1442
2024 Q2	–	Sell	-94,377	Closed	-$1.29M	–	2812
2024 Q1	$1.29M	Buy	+94,377	New	+$1.32M	﹤0.01%	1546

Other funds holding NBBK

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

AltraVue Capital Bellevue, Washington $1.39B AUM 53.77% 1-Year Est. Return

Pertento Partners London, United Kingdom $1.86B AUM 53.86% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

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 Los Angeles, California $34.3B AUM 22.63% 1-Year Est. Return

Marshall Wace's NBBK Position: Q2 2026 in Review

Marshall Wace opened a new position in NB Bancorp (NBBK) in Q2 2026: 123,112 shares worth $2.6M. The stake represents ﹤0.01% of the portfolio and ranks #1705 among its holdings. This is a return to the name: Marshall Wace previously reported a position in NBBK as recently as Q4 2025.

Marshall Wace first reported a position in NBBK in Q1 2024 and has held it in 6 quarters since. The position peaked at $5.63M in Q2 2025. 161 funds tracked by Wall St. Rank hold NBBK as of Q2 2026.

Marshall Wace held 123,112 shares of NB Bancorp worth $2.6M as of Q2 2026.
NB Bancorp was a new Marshall Wace position in Q2 2026.
NB Bancorp made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1705 holding.
Marshall Wace first reported a position in NB Bancorp in Q1 2024 and has held it in 6 quarters since.
Marshall Wace's NB Bancorp position peaked at $5.63M in Q2 2025.
161 funds tracked by Wall St. Rank held NB Bancorp as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.