Who owns NPO (NPO)
Which tracked institutional funds hold NPO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NPO company fundamentals →
Ownership as of the 2026-Q1 13F filings. 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
The tracked-fund tape on NPO is one-sided between 2025-Q4 and 2026-Q1: 114 added or opened and 30 trimmed or exited — on balance accumulating.
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
NPO’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes NPO more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in NPO 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 355 tracked filers holding NPO, 177 increased or opened the position and 154 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 NPO 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 20
- VANGUARD PORTFOLIO MANAGEMENT LLC$333M
- VANGUARD CAPITAL MANAGEMENT LLC$237M
- VANGUARD FIDUCIARY TRUST CO$34M
- Capital Research Global Investors$21M
- Conestoga Capital Advisors, LLC$20M
- J. Goldman & Co LP$11M
Full exits 6
- VANGUARD GROUP INC$477M
- TUDOR INVESTMENT CORP ET AL$3M
- COMERICA BANK$1M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$1M
- Campbell & CO Investment Adviser LLC$1M
- JENNISON ASSOCIATES LLC$570K
Largest adds
- T. Rowe Price Investment Management, Inc.$135M
- BlackRock, Inc.$44M
- PRICE T ROWE ASSOCIATES INC /MD/$37M
- STATE STREET CORP$35M
- BAMCO INC /NY/$34M
- CONGRESS ASSET MANAGEMENT CO$19M
Largest trims
- Capital World Investors$20M
- ALLIANCEBERNSTEIN L.P.$10M
- BROWN ADVISORY INC$10M
- WASATCH ADVISORS LP$8M
- SEGALL BRYANT & HAMILL, LLC$8M
- F/m Investments LLC$7M
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 |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 2,844,813 | $713M | 12.9% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,329,915 | $333M | 6.0% | 2026-Q1 |
| FMR LLC trimmed | 1,129,018 | $283M | 5.1% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 945,021 | $237M | 4.3% | 2026-Q1 |
| WASATCH ADVISORS LP trimmed | 909,882 | $228M | 4.1% | 2026-Q1 |
| Invesco Ltd. trimmed | 823,650 | $206M | 3.7% | 2026-Q1 |
| STATE STREET CORP added | 812,019 | $204M | 3.7% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 755,662 | $189M | 3.4% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 641,086 | $161M | 2.9% | 2026-Q1 |
| Capital International Investors trimmed | 604,280 | $151M | 2.7% | 2026-Q1 |
| Capital World Investors trimmed | 564,055 | $141M | 2.6% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 526,528 | $132M | 2.4% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 447,706 | $112M | 2.0% | 2026-Q1 |
| BROWN ADVISORY INC trimmed | 399,824 | $100M | 1.8% | 2026-Q1 |
| CONGRESS ASSET MANAGEMENT CO added | 398,431 | $100M | 1.8% | 2026-Q1 |
| BAMCO INC /NY/ added | 391,730 | $98M | 1.8% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL trimmed | 307,277 | $77M | 1.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 277,939 | $70M | 1.3% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 277,006 | $69M | 1.3% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 309,151 | $66M | 1.2% | 2026-Q1 |
| Harvey Partners, LLC added | 253,500 | $64M | 1.1% | 2026-Q1 |
| NORTHERN TRUST CORP added | 250,651 | $63M | 1.1% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 248,370 | $62M | 1.1% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 237,640 | $60M | 1.1% | 2026-Q1 |
| MORGAN STANLEY trimmed | 202,972 | $51M | 0.9% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 185,572 | $47M | 0.8% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 185,446 | $46M | 0.8% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 175,090 | $44M | 0.8% | 2026-Q1 |
| Trigran Investments, Inc. trimmed | 170,043 | $43M | 0.8% | 2026-Q1 |
| Nuveen, LLC trimmed | 156,913 | $39M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 137,452 | $34M | 0.6% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 125,150 | $31M | 0.6% | 2026-Q1 |
| Tributary Capital Management, LLC trimmed | 124,767 | $31M | 0.6% | 2026-Q1 |
| BESSEMER GROUP INC added | 124,435 | $31M | 0.6% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 114,557 | $29M | 0.5% | 2026-Q1 |
| Leeward Investments, LLC - MA trimmed | 107,376 | $27M | 0.5% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 106,880 | $27M | 0.5% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 102,477 | $26M | 0.5% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 91,895 | $22M | 0.4% | 2026-Q1 |
| Capital Research Global Investors new | 85,708 | $21M | 0.4% | 2026-Q1 |
| Aberdeen Group plc trimmed | 85,432 | $21M | 0.4% | 2026-Q1 |
| Conestoga Capital Advisors, LLC new | 80,350 | $20M | 0.4% | 2026-Q1 |
| Congruence Capital, LLC added | 78,431 | $20M | 0.4% | 2026-Q1 |
| Public Sector Pension Investment Board added | 75,395 | $19M | 0.3% | 2026-Q1 |
| First Eagle Investment Management, LLC added | 69,855 | $18M | 0.3% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 68,341 | $17M | 0.3% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 68,205 | $17M | 0.3% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 68,142 | $16M | 0.3% | 2026-Q1 |
| GABELLI FUNDS LLC trimmed | 64,394 | $16M | 0.3% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 60,811 | $15M | 0.3% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 59,089 | $15M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 58,756 | $15M | 0.3% | 2026-Q1 |
| OSAIC HOLDINGS, INC. trimmed | 56,132 | $14M | 0.3% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 53,324 | $13M | 0.2% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 50,687 | $13M | 0.2% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 50,100 | $13M | 0.2% | 2026-Q1 |
| Thrivent Financial for Lutherans trimmed | 50,084 | $13M | 0.2% | 2026-Q1 |
| SCOPUS ASSET MANAGEMENT, L.P. trimmed | 49,972 | $13M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 49,231 | $12M | 0.2% | 2026-Q1 |
| Impax Asset Management Group plc | 48,000 | $12M | 0.2% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 45,852 | $11M | 0.2% | 2026-Q1 |
| J. Goldman & Co LP new | 44,495 | $11M | 0.2% | 2026-Q1 |
| Ceredex Value Advisors LLC trimmed | 42,925 | $11M | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 41,765 | $10M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 41,700 | $10M | 0.2% | 2026-Q1 |
| UBS Group AG trimmed | 38,632 | $10M | 0.2% | 2026-Q1 |
| BAHL & GAYNOR INC added | 37,765 | $9M | 0.2% | 2026-Q1 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 37,027 | $9M | 0.2% | 2026-Q1 |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC trimmed | 35,334 | $9M | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 35,056 | $9M | 0.2% | 2026-Q1 |
| EULAV Asset Management added | 31,600 | $8M | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 30,817 | $8M | 0.1% | 2026-Q1 |
| Emerald Investment Advisers, LLC new | 30,313 | $8M | 0.1% | 2026-Q1 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 29,757 | $7M | 0.1% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 29,703 | $7M | 0.1% | 2026-Q1 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM trimmed | 28,689 | $7M | 0.1% | 2026-Q1 |
| ProShare Advisors LLC trimmed | 28,425 | $7M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 25,701 | $6M | 0.1% | 2026-Q1 |
| Phocas Financial Corp. trimmed | 24,437 | $6M | 0.1% | 2026-Q1 |
| AGMAN CAPITAL LLC trimmed | 23,741 | $6M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 20,382 | $5M | 0.1% | 2026-Q1 |
| GREAT LAKES ADVISORS, LLC trimmed | 18,373 | $5M | 0.1% | 2026-Q1 |
| CANADA LIFE ASSURANCE Co trimmed | 17,428 | $4M | 0.1% | 2026-Q1 |
| B. Metzler seel. Sohn & Co. AG trimmed | 17,360 | $4M | 0.1% | 2026-Q1 |
| Blackstone Inc. new | 17,310 | $4M | 0.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 16,179 | $4M | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 16,106 | $4M | 0.1% | 2026-Q1 |
| NATIXIS ADVISORS, LLC added | 15,698 | $4M | 0.1% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 15,109 | $4M | 0.1% | 2026-Q1 |
| LPL Financial LLC trimmed | 14,624 | $4M | 0.1% | 2026-Q1 |
| Creative Planning added | 14,428 | $4M | 0.1% | 2026-Q1 |
| SummitTX Capital, L.P. added | 14,396 | $4M | 0.1% | 2026-Q1 |
| FIRST NATIONAL BANK OF OMAHA trimmed | 14,367 | $4M | 0.1% | 2026-Q1 |
| FIFTH THIRD BANCORP added | 13,614 | $3M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 2,229,372 | $477M | 8.6% | 2025-Q4 stale |
| NORGES BANK trimmed | 83,399 | $14M | 0.2% | 2025-Q3 stale |
| CW Advisors, LLC trimmed | 58,509 | $11M | 0.2% | 2025-Q2 stale |
| MARSHALL WACE, LLP added | 34,382 | $6M | 0.1% | 2025-Q1 stale |
| Trexquant Investment LP added | 21,827 | $4M | 0.1% | 2025-Q2 stale |
| Keeley-Teton Advisors, LLC trimmed | 24,393 | $4M | 0.1% | 2025-Q1 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.