Mariner
NFBK

Mariner’s Northfield Bancorp NFBK Stock Holding History

Mariner’s Portfolio NFBK Stock Details NFBK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$182K Sell
12,382
-10,220
-45% -$145K ﹤0.01% 3184
2026
Q1 		$306K Buy
22,602
+1,317
+6% +$17K ﹤0.01% 2850
2025
Q4 		$243K Buy
21,285
+1,475
+7% +$16.3K ﹤0.01% 3026
2025
Q3 		$234K Sell
19,810
-8,738
-31% -$100K ﹤0.01% 3032
2025
Q2 		$328K Sell
28,548
-524
-2% -$5.82K ﹤0.01% 2655
2025
Q1 		$317K Buy
29,072
+562
+2% +$6.47K ﹤0.01% 2570
2024
Q4 		$331K Sell
28,510
-520
-2% -$6.47K ﹤0.01% 2538
2024
Q3 		$337K Buy
29,030
+2,580
+10% +$29.6K ﹤0.01% 2470
2024
Q2 		$251K Buy
26,450
+15,164
+134% +$133K ﹤0.01% 2593
2024
Q1 		$110K Buy
11,286
+1,036
+10% +$11.4K ﹤0.01% 2915
2023
Q4 		$129K Sell
10,250
-9,206
-47% -$92.6K ﹤0.01% 2806
2023
Q3 		$184K Buy
19,456
+6,446
+50% +$70.5K ﹤0.01% 2535
2023
Q2 		$143K Buy
+13,010
New +$139K ﹤0.01% 2563

Other funds holding NFBK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return
MI
M3F Inc Salt Lake City, Utah $422M AUM 42.84% 1-Year Est. Return

Mariner's NFBK Position: Q2 2026 in Review

Mariner reduced its Northfield Bancorp (NFBK) stake by 45% in Q2 2026, selling an estimated $145K and leaving 12,382 shares worth $182K. The position accounts for ﹤0.01% of the portfolio, ranked #3184.

Mariner first reported a position in NFBK in Q2 2023 and has held it in 13 quarters since. The position peaked at $337K in Q3 2024. 149 funds tracked by Wall St. Rank hold NFBK as of Q2 2026.

  • Mariner held 12,382 shares of Northfield Bancorp worth $182K as of Q2 2026.
  • Mariner sold 10,220 Northfield Bancorp shares in Q2 2026, an estimated $145K.
  • Northfield Bancorp made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #3184 holding.
  • Mariner first reported a position in Northfield Bancorp in Q2 2023 and has held it in 13 quarters since.
  • Mariner's Northfield Bancorp position peaked at $337K in Q3 2024.
  • 149 funds tracked by Wall St. Rank held Northfield Bancorp as of Q2 2026.

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