Mariner
NFBK icon

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
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 $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 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
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
MI
M3F Inc Salt Lake City, Utah $404M AUM 17.61% 1-Year Est. Return

Mariner's NFBK Position: Q1 2026 in Review

Mariner increased its Northfield Bancorp (NFBK) stake by 6.2% in Q1 2026, buying an estimated $17K and bringing the position to 22,602 shares worth $306K. The position accounts for ﹤0.01% of the portfolio, ranked #2850.

Mariner first reported a position in NFBK in Q2 2023 and has held it in 12 quarters since. The position peaked at $337K in Q3 2024. 164 funds tracked by Wall St. Rank hold NFBK as of Q1 2026.

  • Mariner held 22,602 shares of Northfield Bancorp worth $306K as of Q1 2026.
  • Mariner bought 1,317 Northfield Bancorp shares in Q1 2026, an estimated $17K.
  • Northfield Bancorp made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #2850 holding.
  • Mariner first reported a position in Northfield Bancorp in Q2 2023 and has held it in 12 quarters since.
  • Mariner's Northfield Bancorp position peaked at $337K in Q3 2024.
  • 164 funds tracked by Wall St. Rank held Northfield Bancorp as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.