Energy Vault
NRGV
174 hedge funds and large institutions have $490M invested in Energy Vault in 2026 Q2 according to their latest regulatory filings, with 53 funds opening new positions, 65 increasing their positions, 30 reducing their positions, and 34 closing their positions.
487% more call options, than puts
Call options by funds: $82.7M | Put options by funds: $14.1M
117% more repeat investments, than reductions
Existing positions increased: 65 | Existing positions reduced: 30
87% more capital invested
Capital invested by funds: $262M → $490M (+$228M)
56% more first-time investments, than exits
New positions opened: 53 | Existing positions closed: 34
33% more funds holding in top 10
Funds holding in top 10: 3 → 4 (+1)
12.59% more ownership
Funds ownership: 45.86% → 58.44% (+13%)
11% more funds holding
Funds holding: 157 → 174 (+17)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$40.3M |
| 2 |
WDOM
Wasserstein Debt Opportunities Management
New York
|
+$12.5M |
| 3 |
Geode Capital Management
Boston,
Massachusetts
|
+$8.79M |
| 4 |
Jane Street
New York
|
+$8.01M |
| 5 |
JGC
J. Goldman & Co
New York
|
+$6.73M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Marshall Wace
London,
United Kingdom
|
-$11.9M |
| 2 |
Millennium Management
New York
|
-$9.12M |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$3.67M |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$2.61M |
| 5 |
State Street
Boston,
Massachusetts
|
-$2.44M |
NRGV Hedge Fund Activity: Q2 2026 in Review
174 of the 8,318 institutional investors tracked by Wall St. Rank reported a position in Energy Vault (NRGV) for Q2 2026, worth a combined $490M — up 87% from $262M a quarter earlier.
Buyers outnumbered sellers: 53 funds opened new NRGV positions and 34 closed out — a net gain of 19 holders — while 65 added to existing stakes and 30 trimmed.
The largest buyer was BlackRock, adding an estimated $40.3M. The largest seller was Marshall Wace, cutting an estimated $11.9M.
- 174 institutional investors held Energy Vault (NRGV) as of Q2 2026, up from 157 in Q1 2026.
- Funds reported $490M of Energy Vault stock for Q2 2026, up 87% quarter-over-quarter.
- 53 funds opened new Energy Vault positions in Q2 2026 and 34 closed out, a net change of +19 holders.
- The largest Energy Vault buyer in Q2 2026 was BlackRock, an estimated $40.3M added.
- The largest Energy Vault seller in Q2 2026 was Marshall Wace, an estimated $11.9M sold.
Based on aggregated 13F filings for Q2 2026.