Energy Vault Holdings, Inc.
US ˙ NYSE ˙ US29280W1099

SecurityNRGV / Energy Vault Holdings, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership41,207 shares
Latest Disclosed Value $ 136,189
Janus Henderson Group Plc ownership in NRGV / Energy Vault Holdings, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 41,207 shares of Energy Vault Holdings, Inc. (US:NRGV) valued at $135,983 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2023 disclosing 0 shares of Energy Vault Holdings, Inc.. The current value of the position is $241,473 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-18 2026-03-31 13F/A-1 ENERGY VAULT HOLDINGS COM 29280W109 41,207 41,207 136 0.0000
2026-05-15 2026-03-31 13F ENERGY VAULT HOLDINGS COM 29280W109 41,207 41,207 136 0.0000
2023-08-14 2023-06-30 13F ENERGY VAULT HOLDINGS COM 29280W109 0 -28,128 -100.00 0 -100.00
2023-05-15 2023-03-31 13F ENERGY VAULT HOLDINGS COM 29280W109 28,128 16,523 142.38 60 66.67 0.0000
2023-02-14 2022-12-31 13F ENERGY VAULT HOLDINGS COM 29280W109 11,605 1 0.01 36 -40.98 0.0000
2023-01-13 2022-09-30 13F/A-1 ENERGY VAULT HOLDINGS COM 29280W109 11,604 -247 -2.08 61 -48.74 0.0000
2022-11-14 2022-09-30 13F ENERGY VAULT HOLDINGS COM 29280W109 11,604 -247 61 0.0000
2022-08-15 2022-06-30 13F ENERGY VAULT HOLDINGS COM 29280W109 11,851 11,851 119 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.