Mariner
EOSE icon

Mariner’s Eos Energy Enterprises EOSE Stock Holding History

Mariner’s Portfolio EOSE Stock Details EOSE Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$457K Buy
92,206
+17,579
+24% +$189K ﹤0.01% 2558
2025
Q4 		$856K Buy
74,627
+8,340
+13% +$120K ﹤0.01% 2053
2025
Q3 		$755K Buy
66,287
+18,444
+39% +$126K ﹤0.01% 2110
2025
Q2 		$245K Buy
47,843
+11,447
+31% +$56.1K ﹤0.01% 2898
2025
Q1 		$138K Sell
36,396
-8,879
-20% -$43.3K ﹤0.01% 3120
2024
Q4 		$220K Hold
45,275
– – ﹤0.01% 2926
2024
Q3 		$134K Buy
45,275
+5,301
+13% +$11.2K ﹤0.01% 3033
2024
Q2 		$50.8K Hold
39,974
– – ﹤0.01% 3056
2024
Q1 		$41.2K Buy
39,974
+26,586
+199% +$27K ﹤0.01% 3048
2023
Q4 		$14.6K Sell
13,388
-3,819
-22% -$5.57K ﹤0.01% 3017
2023
Q3 		$37K Buy
17,207
+3,504
+26% +$10.5K ﹤0.01% 2800
2023
Q2 		$59.5K Buy
+13,703
New +$36K ﹤0.01% 2697
2023
Q1 		– Sell
-10,098
Closed -$15K – 2816
2022
Q4 		$15K Buy
+10,098
New +$13.1K ﹤0.01% 2702

Other funds holding EOSE

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 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
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
ECP
Electron Capital Partners New York $2.55B AUM 87.77% 1-Year Est. Return

Mariner's EOSE Position: Q1 2026 in Review

Mariner increased its Eos Energy Enterprises (EOSE) stake by 24% in Q1 2026, buying an estimated $189K and bringing the position to 92,206 shares worth $457K. The position accounts for ﹤0.01% of the portfolio, ranked #2558.

Mariner first reported a position in EOSE in Q4 2022 and has held it in 13 quarters since. The position peaked at $856K in Q4 2025. 316 funds tracked by Wall St. Rank hold EOSE as of Q1 2026.

  • Mariner held 92,206 shares of Eos Energy Enterprises worth $457K as of Q1 2026.
  • Mariner bought 17,579 Eos Energy Enterprises shares in Q1 2026, an estimated $189K.
  • Eos Energy Enterprises made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #2558 holding.
  • Mariner first reported a position in Eos Energy Enterprises in Q4 2022 and has held it in 13 quarters since.
  • Mariner's Eos Energy Enterprises position peaked at $856K in Q4 2025.
  • 316 funds tracked by Wall St. Rank held Eos Energy Enterprises as of Q1 2026.

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