PCM
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Polymer Capital Management’s NB Bancorp NBBK Stock Holding History

Polymer Capital Management’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 		– Sell
-17,866
Closed -$376K – 872
2026
Q1 		$376K Buy
+17,866
New +$376K 0.04% 518
2025
Q4 		– Sell
-19,819
Closed -$350K – 928
2025
Q3 		$350K Buy
+19,819
New +$364K 0.04% 555

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

Polymer Capital Management's NBBK Position: Q2 2026 in Review

Polymer Capital Management sold out of NB Bancorp (NBBK) in Q2 2026, closing a stake of 17,866 shares — an estimated $376K sold.

Polymer Capital Management first reported a position in NBBK in Q3 2025 and held it in 2 quarters. The position peaked at $376K in Q1 2026. 161 funds tracked by Wall St. Rank hold NBBK as of Q2 2026.

  • Polymer Capital Management reported no remaining NB Bancorp position as of Q2 2026 after selling out during the quarter.
  • Polymer Capital Management sold 17,866 NB Bancorp shares in Q2 2026, an estimated $376K.
  • Polymer Capital Management first reported a position in NB Bancorp in Q3 2025 and held it in 2 quarters.
  • Polymer Capital Management's NB Bancorp position peaked at $376K in Q1 2026.
  • 161 funds tracked by Wall St. Rank held NB Bancorp as of Q2 2026.

Based on Polymer Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.