網路電力公司
US ˙ NYSE ˙ US64107A1051

SecurityNPWR / NET Power Inc.
InstitutionState Street Corp
Latest Disclosed Ownership613,534 shares
Latest Disclosed Value $ 957,113
State Street Corp reports 1.63% increase in ownership of NPWR / NET Power Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 613,534 shares of NET Power Inc. (US:NPWR) valued at $957,113 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 603,694 shares of NET Power Inc.. This represents a change in shares of 1.63% during the quarter. The current value of the position is $1,135,038 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)
2026-05-15 2026-03-31 13F NET POWER COM CL A 64107A105 613,534 9,840 1.63 957 -30.45 0.0000
2026-02-13 2025-12-31 13F NET POWER COM CL A 64107A105 603,694 9,001 1.51 1,376 -23.13 0.0000
2025-11-14 2025-09-30 13F NET POWER COM CL A 64107A105 594,693 22,124 3.86 1,790 26.59 0.0001
2025-08-14 2025-06-30 13F NET POWER COM CL A 64107A105 572,569 3,112 0.55 1,414 -5.54 0.0001
2025-05-15 2025-03-31 13F NET POWER COM CL A 64107A105 569,457 27,980 5.17 1,498 -73.89 0.0001
2025-02-14 2024-12-31 13F NET POWER COM CL A 64107A105 541,477 172,196 46.63 5,734 121.56 0.0002
2024-11-14 2024-09-30 13F NET POWER COM CL A 64107A105 369,281 38,910 11.78 2,589 -20.30 0.0001
2024-08-14 2024-06-30 13F NET POWER COM CL A 64107A105 330,371 234,971 246.30 3,248 198.99 0.0001
2024-05-15 2024-03-31 13F NET POWER COM CL A 64107A105 95,400 -3,912 -3.94 1,087 8.28 0.0000
2024-02-14 2023-12-31 13F NET POWER COM CL A 64107A105 99,312 76,112 328.07 1,003 186.57 0.0000
2023-11-14 2023-09-30 13F NET POWER COM CL A 64107A105 23,200 23,200 350 0.0000
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.