Eos Energy Enterprises
EOSE
316 hedge funds and large institutions have $1.02B invested in Eos Energy Enterprises in 2026 Q1 according to their latest regulatory filings, with 74 funds opening new positions, 136 increasing their positions, 77 reducing their positions, and 71 closing their positions.
77% more repeat investments, than reductions
Existing positions increased: 136 | Existing positions reduced: 77
31% more call options, than puts
Call options by funds: $219M | Put options by funds: $168M
4% more first-time investments, than exits
New positions opened: 74 | Existing positions closed: 71
0.31% less ownership
Funds ownership: 60.95% → 60.64% (-0.31%)
2% less funds holding
Funds holding: 322 → 316 (-6)
49% less capital invested
Capital invested by funds: $2.01B → $1.02B (-$992M)
75% less funds holding in top 10
Funds holding in top 10: 4 → 1 (-3)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Two Sigma Investments
New York
|
+$93.7M |
| 2 |
Marshall Wace
London,
United Kingdom
|
+$69.1M |
| 3 |
Citadel Advisors
Miami,
Florida
|
+$39.1M |
| 4 |
Voloridge Investment Management
Jupiter,
Florida
|
+$34.6M |
| 5 |
HF
HRT Financial
New York
|
+$34.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RCMNY
Rubric Capital Management (New York)
New York
|
-$74.5M |
| 2 |
VNIM
Vaughan Nelson Investment Management
Houston,
Texas
|
-$22.3M |
| 3 |
Jane Street
New York
|
-$19.9M |
| 4 |
GCM
Graham Capital Management
Rowayton,
Connecticut
|
-$19.3M |
| 5 |
Simplex Trading
Chicago,
Illinois
|
-$13.6M |
EOSE Hedge Fund Activity: Q1 2026 in Review
316 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Eos Energy Enterprises (EOSE) for Q1 2026, worth a combined $1.02B — down 49% from $2.01B a quarter earlier.
Buyers outnumbered sellers: 74 funds opened new EOSE positions and 71 closed out — a net gain of 3 holders — while 136 added to existing stakes and 77 trimmed.
The largest buyer was Two Sigma Investments, adding an estimated $93.7M. The largest seller was Rubric Capital Management (New York), exiting entirely with an estimated $74.5M sold.
- 316 institutional investors held Eos Energy Enterprises (EOSE) as of Q1 2026, down from 322 in Q4 2025.
- Funds reported $1.02B of Eos Energy Enterprises stock for Q1 2026, down 49% quarter-over-quarter.
- 74 funds opened new Eos Energy Enterprises positions in Q1 2026 and 71 closed out, a net change of +3 holders.
- The largest Eos Energy Enterprises buyer in Q1 2026 was Two Sigma Investments, an estimated $93.7M added.
- The largest Eos Energy Enterprises seller in Q1 2026 was Rubric Capital Management (New York), an estimated $74.5M sold.
Based on aggregated 13F filings for Q1 2026.