Who owns NPWR
Which tracked institutional funds hold NPWR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NPWR company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
8 tracked funds added or opened NPWR while 19 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
NPWR’s largest tracked holder by dollar value, Share Andrew L., sizes it at 7.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 7.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in NPWR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 113 tracked filers holding NPWR, 57 increased or opened the position and 50 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in NPWR between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 2
- VANGUARD CAPITAL MANAGEMENT LLC$3M
- Defiance ETFs, LLC$832K
Full exits 2
- VANGUARD GROUP INC$5M
- WELLINGTON MANAGEMENT GROUP LLP$625K
Largest adds
- HITE Hedge Asset Management LLC$3M
- RENAISSANCE TECHNOLOGIES LLC$882K
- Argentarii, LLC$567K
- TUDOR INVESTMENT CORP ET AL$479K
- UBS Group AG$430K
- Tidal Investments LLC$298K
Largest trims
- Share Andrew L.$7M
- MILLENNIUM MANAGEMENT LLC$4M
- CenterBook Partners LP$4M
- JANE STREET GROUP, LLC$2M
- BlackRock, Inc.$1M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$1M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Share Andrew L. | 9,767,500 | $15M | 20.3% | 2026-Q1 |
| HITE Hedge Asset Management LLC added | 2,763,424 | $4M | 5.7% | 2026-Q1 |
| BlackRock, Inc. added | 2,142,916 | $3M | 4.5% | 2026-Q1 |
| PEAK6 LLC added | 1,988,215 | $3M | 4.1% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,643,795 | $3M | 3.4% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1,540,000 | $2M | 3.2% | 2026-Q1 |
| Sourcerock Group LLC added | 1,504,126 | $2M | 3.1% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 1,080,281 | $2M | 2.2% | 2026-Q1 |
| COHEN & STEERS, INC. trimmed | 892,140 | $1M | 1.9% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 860,386 | $1M | 1.8% | 2026-Q1 |
| Argentarii, LLC added | 748,649 | $1M | 1.6% | 2026-Q1 |
| Nuveen, LLC added | 713,760 | $1M | 1.5% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 703,800 | $1M | 1.5% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 682,705 | $1M | 1.4% | 2026-Q1 |
| STATE STREET CORP added | 613,534 | $957K | 1.3% | 2026-Q1 |
| Tidal Investments LLC added | 533,253 | $832K | 1.1% | 2026-Q1 |
| Defiance ETFs, LLC new | 533,253 | $832K | 1.1% | 2026-Q1 |
| CenterBook Partners LP trimmed | 437,771 | $683K | 0.9% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 431,153 | $673K | 0.9% | 2026-Q1 |
| UBS Group AG added | 369,873 | $577K | 0.8% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 295,951 | $462K | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 292,024 | $456K | 0.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 269,518 | $420K | 0.6% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 264,699 | $413K | 0.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 260,565 | $406K | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 249,023 | $388K | 0.5% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 241,592 | $377K | 0.5% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 235,397 | $367K | 0.5% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 218,981 | $342K | 0.5% | 2026-Q1 |
| SHELTON CAPITAL MANAGEMENT | 200,300 | $312K | 0.4% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP new | 186,240 | $291K | 0.4% | 2026-Q1 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC new | 184,083 | $287K | 0.4% | 2026-Q1 |
| MORGAN STANLEY trimmed | 183,795 | $287K | 0.4% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 171,424 | $267K | 0.4% | 2026-Q1 |
| Squarepoint Ops LLC added | 166,242 | $259K | 0.3% | 2026-Q1 |
| Empowered Funds, LLC trimmed | 155,000 | $242K | 0.3% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 153,493 | $239K | 0.3% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 101,680 | $232K | 0.3% | 2026-Q1 |
| Janney Montgomery Scott LLC added | 133,000 | $207K | 0.3% | 2026-Q1 |
| SIR Capital Management, L.P. | 103,178 | $161K | 0.2% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 103,121 | $161K | 0.2% | 2026-Q1 |
| MOORE CAPITAL MANAGEMENT, LP | 85,000 | $133K | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 84,046 | $131K | 0.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 54,177 | $85K | 0.1% | 2026-Q1 |
| LPL Financial LLC added | 53,025 | $83K | 0.1% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 52,548 | $82K | 0.1% | 2026-Q1 |
| Polymer Capital Management (US) LLC added | 50,926 | $79K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 49,114 | $77K | 0.1% | 2026-Q1 |
| OSAIC HOLDINGS, INC. trimmed | 40,985 | $64K | 0.1% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 36,577 | $57K | 0.1% | 2026-Q1 |
| LMR Partners LLP added | 35,872 | $56K | 0.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 35,083 | $55K | 0.1% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 34,091 | $53K | 0.1% | 2026-Q1 |
| SIG BROKERAGE, LP | 31,942 | $50K | 0.1% | 2026-Q1 |
| Engineers Gate Manager LP trimmed | 30,950 | $48K | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 28,815 | $45K | 0.1% | 2026-Q1 |
| Family Manage LLC added | 26,233 | $41K | 0.1% | 2026-Q1 |
| Caption Management, LLC trimmed | 19,878 | $31K | 0.0% | 2026-Q1 |
| OXFORD ASSET MANAGEMENT LLP new | 19,566 | $31K | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 2,017,263 | $5M | 6.1% | 2025-Q4 stale |
| KENSICO CAPITAL MANAGEMENT CORP trimmed | 1,688,100 | $4M | 5.9% | 2025-Q1 stale |
| Khrom Capital Management LLC | 1,084,705 | $3M | 3.8% | 2025-Q1 stale |
| MARSHALL WACE, LLP added | 737,954 | $2M | 2.6% | 2025-Q1 stale |
| Walleye Capital LLC new | 284,932 | $858K | 1.1% | 2025-Q3 stale |
| J. Goldman & Co LP added | 271,473 | $671K | 0.9% | 2025-Q2 stale |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 274,327 | $625K | 0.8% | 2025-Q4 stale |
| S&CO INC trimmed | 188,000 | $464K | 0.6% | 2025-Q2 stale |
| G.F.W. Energy XII, L.P. | 118,729 | $357K | 0.5% | 2025-Q3 stale |
| ARDSLEY ADVISORY PARTNERS LP new | 107,817 | $325K | 0.4% | 2025-Q3 stale |
| HRT FINANCIAL LP added | 105,663 | $318K | 0.4% | 2025-Q3 stale |
| PDT Partners, LLC added | 111,955 | $294K | 0.4% | 2025-Q1 stale |
| TWO SIGMA ADVISERS, LP trimmed | 102,400 | $233K | 0.3% | 2025-Q4 stale |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 87,636 | $230K | 0.3% | 2025-Q1 stale |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 79,283 | $209K | 0.3% | 2025-Q1 stale |
| Worth Venture Partners, LLC added | 80,250 | $183K | 0.2% | 2025-Q4 stale |
| SIMPLEX TRADING, LLC added | 47,571 | $143K | 0.2% | 2025-Q3 stale |
| Quantbot Technologies LP added | 60,215 | $137K | 0.2% | 2025-Q4 stale |
| Graham Capital Management, L.P. new | 59,786 | $136K | 0.2% | 2025-Q4 stale |
| EntryPoint Capital, LLC new | 47,794 | $126K | 0.2% | 2025-Q1 stale |
| Atom Investors LP added | 55,094 | $126K | 0.2% | 2025-Q4 stale |
| K2 PRINCIPAL FUND, L.P. added | 43,125 | $113K | 0.2% | 2025-Q1 stale |
| SG Americas Securities, LLC new | 34,911 | $105K | 0.1% | 2025-Q3 stale |
| Cubist Systematic Strategies, LLC added | 42,275 | $104K | 0.1% | 2025-Q2 stale |
| AXQ CAPITAL, LP new | 38,401 | $95K | 0.1% | 2025-Q2 stale |
| Stonegate Investment Group, LLC added | 30,000 | $90K | 0.1% | 2025-Q3 stale |
| OMERS ADMINISTRATION Corp added | 36,400 | $90K | 0.1% | 2025-Q2 stale |
| Brooklyn Investment Group added | 27,000 | $81K | 0.1% | 2025-Q3 stale |
| WOLVERINE TRADING, LLC trimmed | 28,373 | $70K | 0.1% | 2025-Q2 stale |
| Verition Fund Management LLC added | 30,321 | $69K | 0.1% | 2025-Q4 stale |
| Kovitz Investment Group Partners, LLC trimmed | 26,380 | $60K | 0.1% | 2025-Q4 stale |
| Jain Global LLC trimmed | 25,029 | $57K | 0.1% | 2025-Q4 stale |
| ExodusPoint Capital Management, LP trimmed | 21,594 | $57K | 0.1% | 2025-Q1 stale |
| STATE OF WISCONSIN INVESTMENT BOARD added | 20,471 | $54K | 0.1% | 2025-Q1 stale |
| TWO SIGMA SECURITIES, LLC new | 21,454 | $49K | 0.1% | 2025-Q4 stale |
| Handelsbanken Fonder AB | 16,500 | $43K | 0.1% | 2025-Q1 stale |
| THOMPSON DAVIS & CO., INC. new | 18,111 | $41K | 0.1% | 2025-Q4 stale |
| Smithfield Trust Co | 15,474 | $41K | 0.1% | 2025-Q1 stale |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 14,529 | $38K | 0.1% | 2025-Q1 stale |
| Nebula Research & Development LLC trimmed | 14,386 | $38K | 0.1% | 2025-Q1 stale |
| Sanctuary Advisors, LLC new | 10,735 | $32K | 0.0% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.