Mariner’s ECB Bancorp ECBK Stock Holding History

Mariner’s Portfolio ECBK Stock Details ECBK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$216K	Buy	12,887 +1,328	+11%	+$23K	﹤0.01%	3129
2025 Q4	$201K	Sell	11,559 -879	-7%	-$14.6K	﹤0.01%	3166
2025 Q3	$197K	Buy	12,438 +2,173	+21%	+$35.3K	﹤0.01%	3184
2025 Q2	$158K	Buy	10,265 +104	+1%	+$1.63K	﹤0.01%	3125
2025 Q1	$154K	Buy	10,161 +161	+2%	+$2.33K	﹤0.01%	3085
2024 Q4	$148K	Hold	10,000	–	–	﹤0.01%	3092
2024 Q3	$143K	Hold	10,000	–	–	﹤0.01%	3018
2024 Q2	$125K	Hold	10,000	–	–	﹤0.01%	2909
2024 Q1	$130K	Hold	10,000	–	–	﹤0.01%	2876
2023 Q4	$126K	Hold	10,000	–	–	﹤0.01%	2811
2023 Q3	$110K	Hold	10,000	–	–	﹤0.01%	2660
2023 Q2	$131K	Hold	10,000	–	–	﹤0.01%	2579
2023 Q1	$139K	Hold	10,000	–	–	﹤0.01%	2505
2022 Q4	$160K	Hold	10,000	–	–	﹤0.01%	2406
2022 Q3	$144K	Buy	+10,000	New	+$142K	﹤0.01%	2124

Other funds holding ECBK

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Sachetta Lynnfield, Massachusetts $206M AUM 26.19% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Oppenheimer & Close New York $159M AUM 60.56% 1-Year Est. Return

MCM

Maltese Capital Management New York $508M AUM 21.31% 1-Year Est. Return

Mariner's ECBK Position: Q1 2026 in Review

Mariner increased its ECB Bancorp (ECBK) stake by 11% in Q1 2026, buying an estimated $23K and bringing the position to 12,887 shares worth $216K. The position accounts for ﹤0.01% of the portfolio, ranked #3129.

Mariner first reported a position in ECBK in Q3 2022 and has held it in 15 quarters since. 59 funds tracked by Wall St. Rank hold ECBK as of Q1 2026.

Mariner held 12,887 shares of ECB Bancorp worth $216K as of Q1 2026.
Mariner bought 1,328 ECB Bancorp shares in Q1 2026, an estimated $23K.
ECB Bancorp made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #3129 holding.
Mariner first reported a position in ECB Bancorp in Q3 2022 and has held it in 15 quarters since.
59 funds tracked by Wall St. Rank held ECB Bancorp as of Q1 2026.

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