NPO · Enpro Inc. · Holdings
One customer — 24% of revenue (2025)
“including a customer that accounted for approximately 24% of our 2025 consolidated net sales.”
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding NPO
All superinvestors →Holder Concentration
Across 409 13F filersWho Holds NPO
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 409 filers, like-for-like change +0.4%; actively managed books -1.9%; index-like books +4.8%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 41.1% | 216 | -2.8% |
| Exempt adviser | 0.0% | 2 | -1.1% |
| Adviser | 14.6% | 13 | +5.2% |
| Bank | 7.5% | 20 | -3.1% |
| Insurer | 0.8% | 3 | -0.1% |
| Broker-dealer | 0.0% | 1 | -48.0% |
| Benefit plan | 0.4% | 6 | -7.3% |
| Non-US | 0.9% | 7 | +63.4% |
| Holding company | 26.4% | 12 | +3.0% |
| Unknown | 8.2% | 129 | +0.8% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 35.4% | 42 | +4.8% |
| Systematic-like | 1.3% | 20 | +153.2% |
| Concentrated | 3.2% | 68 | -4.6% |
| Diversified active | 60.0% | 279 | -3.0% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 65.4% | 261 | -0.4% |
| Medium turnover | 18.2% | 75 | -5.7% |
| High turnover | 2.4% | 39 | +58.0% |
| Unknown | 14.0% | 34 | +6.7% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 14.3% | 45 | +7.1% |
| Medium horizon | 20.0% | 73 | +4.4% |
| Long horizon | 62.2% | 275 | -4.1% |
| Unknown | 3.4% | 16 | +57.2% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 1.6% | 94 | -4.6% |
| $1B to $10B | 5.4% | 122 | -5.9% |
| $10B to $100B | 17.6% | 121 | -5.2% |
| $100B or more | 75.4% | 72 | +2.4% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 1.4% | 119 | -7.0% |
| Pooled investment vehicles | 2.0% | 22 | +7.4% |
| Registered funds and BDCs | 24.9% | 28 | +0.1% |
| Pension and profit sharing plans | 1.0% | 5 | -17.4% |
| Insurance companies | 0.1% | 3 | +2.4% |
| Charitable organizations | 0.0% | 1 | 0.0% |
| Governments and sovereign funds | 0.4% | 3 | +1.9% |
| Banks and thrifts | 0.0% | 1 | -14.2% |
| Other investment advisers | 0.4% | 7 | -11.5% |
| Other | 0.5% | 3 | -5.3% |
| Diversified | 10.5% | 24 | -8.5% |
| Unknown | 58.9% | 193 | +2.8% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 6.4% | 39 | +22.2% |
| Private equity funds | 0.4% | 11 | +3.4% |
| Venture capital funds | 0.0% | 2 | -20.4% |
| Real estate funds | 0.0% | 5 | -19.5% |
| Liquidity funds | 0.0% | 2 | new |
| Securitized asset funds | 0.3% | 1 | -3.1% |
| Other private funds | 10.2% | 19 | -20.9% |
| Mixed private funds | 1.3% | 1 | -10.5% |
| Private funds, type not stated | 0.3% | 2 | -1.8% |
| No private funds | 22.2% | 136 | +2.3% |
| Unknown | 58.9% | 191 | +2.8% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 96.6% | 365 | +0.4% |
| Outside the US | 3.4% | 44 | +0.9% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 5 holders with no observed 2026-03-31 13F and 5 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
409 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 31.7% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies NPO's active holders also own, quarter ended Jun 30, 2026Shareholder Targets
13F filers that own its peers but not NPO, quarter ended Jun 30, 2026Found through its holder-overlap peers: MTRN, FSS, CTS, BCPC, ESE, SXI, HLIO, GFF, BDC, SMP, ANDG, AEIS, CWST, KN, AZZ, NGVT, MRCY, SBH, RBC, BHE. 1,202 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Durable Capital Partners LP Adviser, Diversified active | $1,163,658,353 2 held | RBC, ANDG |
| 2 | NORGES BANK Non-US, Index-like | $854,977,788 13 held | RBC, AEIS, ESE |
| 3 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC Registered adviser, Diversified active | $813,916,213 4 held | RBC, ANDG, AEIS |
| 4 | EARNEST PARTNERS LLC Registered adviser, Diversified active | $761,118,251 4 held | AEIS, BHE, CWST |
| 5 | GENEVA CAPITAL MANAGEMENT LLC Registered adviser, Diversified active | $551,829,983 4 held | RBC, ESE, BCPC |
| 6 | GW&K Investment Management, LLC Registered adviser, Diversified active | $536,181,836 7 held | AEIS, RBC, FSS |
| 7 | LOOMIS SAYLES & CO L P Registered adviser, Diversified active | $523,048,255 7 held | RBC, AEIS, ESE |
| 8 | BAILLIE GIFFORD & CO Adviser, Diversified active | $489,787,018 1 held | RBC |
| 9 | JANA Partners Management, LP Registered adviser, Concentrated | $484,285,998 1 held | MRCY |
| 10 | Fisher Asset Management, LLC Adviser, Diversified active | $465,007,260 6 held | MTRN, MRCY, AEIS |
Fund Ownership of NPO by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 28.93% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 4.90% | 1,036,953 |
| Index ETFs | 24.03% | 5,086,611 |
| Active ETFs | 1.23% | 259,664 |
| Active funds | 31.96% | 6,764,537 |
| Unclassified | 0.14% | 29,417 |
| All registered funds | 62.25% | 13,177,182 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $1,268,036,236 | 15.95% | 3,364,116 | Shares | 2026-08-07 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $528,094,007 | 6.64% | 1,401,040 | Shares | 2026-08-13 | |
| Mega FMR LLC Holding company | $480,526,947 | 6.04% | 1,274,844 | Shares | 2026-08-13 | |
| Mega Invesco Ltd. Adviser | $360,805,308 | 4.54% | 957,221 | Shares | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $358,300,988 | 4.51% | 950,577 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $321,792,302 | 4.05% | 853,719 | Shares | 2026-09-22 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $249,457,548 | 3.14% | 661,814 | Shares | 2026-08-11 | |
| Mega Capital World Investors Adviser | $226,004,212 | 2.84% | 599,592 | Shares | 2026-08-12 | |
| Mega Capital International Investors Adviser | $216,680,472 | 2.73% | 574,856 | Shares | 2026-08-12 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $207,098,911 | 2.60% | 549,436 | Shares | 2026-08-12 | |
| Mega T. Rowe Price Investment Management, Inc. Adviser | $205,555,760 | 2.59% | 545,342 | Shares | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $171,340,315 | 2.15% | 454,568 | Shares | 2026-08-14 | |
| Large BAMCO INC /NY/ Registered adviser | $150,576,750 | 1.89% | 399,482 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $132,164,095 | 1.66% | 350,633 | Shares | 2026-08-14 | |
| Large CONGRESS ASSET MANAGEMENT CO Registered adviser | $131,993,159 | 1.66% | 430,984 | Shares | 2026-10-06 | |
| Large WESTFIELD CAPITAL MANAGEMENT CO LP Registered adviser | $108,010,799 | 1.36% | 286,554 | Shares | 2026-08-12 | |
| Large GAMCO INVESTORS, INC. ET AL Registered adviser | $106,172,511 | 1.34% | 281,677 | Shares | 2026-08-12 | |
| Large WASATCH ADVISORS LP Registered adviser | $105,070,455 | 1.32% | 343,076 | Shares | 2026-10-13 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $104,281,076 | 1.31% | 276,659 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $100,718,710 | 1.27% | 267,208 | Shares | 2026-08-13 | |
| Large BROWN ADVISORY INC | $95,320,318 | 1.20% | 252,886 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $93,032,731 | 1.17% | 246,817 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $86,636,224 | 1.09% | 229,847 | Shares | 2026-08-13 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $80,433,846 | 1.01% | 213,392 | Shares | 2026-08-14 | |
| Mid Harvey Partners, LLC Registered adviser | $78,248,029 | 0.98% | 207,593 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $66,043,034 | 0.83% | 175,213 | Shares | 2026-08-11 | |
| Mega Jupiter Topco LLC | $65,668,366 | 0.83% | 174,219 | Shares | 2026-08-14 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $65,230,373 | 0.82% | 173,057 | Shares | 2026-08-14 | |
| Mid SEGALL BRYANT & HAMILL, LLC Registered adviser | $60,718,522 | 0.76% | 161,087 | Shares | 2026-08-12 | |
| Small Trigran Investments, Inc. Registered adviser | $58,978,990 | 0.74% | 156,472 | Shares | 2026-08-12 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $56,983,523 | 0.72% | 151,178 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $54,495,403 | 0.69% | 144,577 | Shares | 2026-08-06 | |
| Large BESSEMER GROUP INC | $53,018,969 | 0.67% | 140,660 | Shares | 2026-08-12 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $47,501,472 | 0.60% | 126,022 | Shares | 2026-08-14 | |
| Mid Tributary Capital Management, LLC Registered adviser | $45,652,630 | 0.57% | 121,117 | Shares | 2026-07-23 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Adviser | $41,260,265 | 0.52% | 109,464 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $40,755,555 | 0.51% | 108,125 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $40,314,924 | 0.51% | 106,956 | Shares | 2026-08-14 | |
| Mid Leeward Investments, LLC - MA Registered adviser | $39,811,346 | 0.50% | 105,620 | Shares | 2026-07-30 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $38,911,613 | 0.49% | 103,233 | Shares | 2026-08-04 | |
| Mega SEI INVESTMENTS CO | $36,009,630 | 0.45% | 95,534 | Shares | 2026-08-14 | |
| Large First Eagle Investment Management, LLC Registered adviser | $33,972,700 | 0.43% | 90,130 | Shares | 2026-08-24 | |
| Mega Capital Research Global Investors Adviser | $33,179,263 | 0.42% | 88,025 | Shares | 2026-08-12 | |
| Mega ROYAL BANK OF CANADA Bank | $32,212,811 | 0.41% | 85,461 | Shares | 2026-08-14 | |
| Mid Conestoga Capital Advisors, LLC Adviser | $29,924,472 | 0.38% | 79,390 | Shares | 2026-07-24 | |
| Large Public Sector Pension Investment Board Non-US | $27,362,479 | 0.34% | 72,593 | Shares | 2026-08-13 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $26,237,720 | 0.33% | 69,609 | Shares | 2026-09-23 | |
| Small Congruence Capital, LLC Registered adviser | $25,212,846 | 0.32% | 66,890 | Shares | 2026-08-13 | |
| Mid KENNEDY CAPITAL MANAGEMENT LLC Registered adviser | $24,979,904 | 0.31% | 66,272 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $24,901,499 | 0.31% | 66,064 | Shares | 2026-08-12 | |
| Mid SCOPUS ASSET MANAGEMENT, L.P. Registered adviser | $24,500,450 | 0.31% | 65,000 | Call | 2026-08-14 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US | $23,050,400 | 0.29% | 61,153 | Shares | 2026-08-13 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $22,201,548 | 0.28% | 58,901 | Shares | 2026-08-13 | |
| Large PRUDENTIAL FINANCIAL INC Insurer | $21,908,302 | 0.28% | 58,123 | Shares | 2026-08-12 | |
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP Registered adviser | $20,891,722 | 0.26% | 55,426 | Shares | 2026-08-13 | |
| Large OSAIC HOLDINGS, INC. Holding company | $20,888,704 | 0.26% | 55,418 | Shares | 2026-08-14 | |
| Large Aberdeen Group plc Holding company | $20,723,988 | 0.26% | 54,981 | Shares | 2026-07-31 | |
| Large Impax Asset Management Group plc Holding company | $20,278,834 | 0.26% | 53,800 | Shares | 2026-08-11 | |
| Large GABELLI FUNDS LLC Registered adviser | $20,269,410 | 0.25% | 53,775 | Shares | 2026-08-12 | |
| Large Thrivent Financial for Lutherans Registered adviser | $19,412,271 | 0.24% | 51,501 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $19,312,008 | 0.24% | 51,235 | Shares | 2026-08-12 | |
| Mega Legal & General Group Plc | $18,353,474 | 0.23% | 48,692 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $17,509,528 | 0.22% | 46,453 | Shares | 2026-08-14 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $16,736,822 | 0.21% | 44,403 | Shares | 2026-08-14 | |
| Mid SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $16,059,102 | 0.20% | 42,605 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $15,582,286 | 0.20% | 41,340 | Shares | 2026-08-11 | |
| Mid SCOPUS ASSET MANAGEMENT, L.P. Registered adviser | $15,077,200 | 0.19% | 40,000 | Put | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $14,888,735 | 0.19% | 39,500 | Call | 2026-08-14 | |
| Large MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC Registered adviser | $14,440,565 | 0.18% | 38,311 | Shares | 2026-08-11 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $13,763,597 | 0.17% | 36,515 | Shares | 2026-08-14 | |
| Mid EULAV Asset Management Registered adviser | $13,117,164 | 0.16% | 34,800 | Shares | 2026-07-29 | |
| Large BAHL & GAYNOR INC Adviser | $12,756,441 | 0.16% | 33,843 | Shares | 2026-08-13 | |
| Mid Ceredex Value Advisors LLC Registered adviser | $12,627,154 | 0.16% | 33,500 | Shares | 2026-08-11 | |
| Mega DEUTSCHE BANK AG\ Non-US | $12,087,767 | 0.15% | 32,069 | Shares | 2026-08-07 | |
| Mega NEUBERGER BERMAN GROUP LLC Holding company | $11,856,332 | 0.15% | 31,455 | Shares | 2026-08-13 | |
| Mid Jump Financial, LLC | $11,470,356 | 0.14% | 30,431 | Shares | 2026-08-13 | |
| Mid Emerald Investment Advisers, LLC Registered adviser | $10,913,254 | 0.14% | 28,953 | Shares | 2026-08-12 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $10,639,226 | 0.13% | 28,226 | Shares | 2026-08-14 | |
| Large Select Equity Group, L.P. Registered adviser | $10,502,400 | 0.13% | 27,863 | Shares | 2026-08-14 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC Registered adviser | $9,950,952 | 0.13% | 26,400 | Shares | 2026-08-14 | |
| Mid J. Goldman & Co LP Registered adviser | $9,831,842 | 0.12% | 26,084 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $9,486,194 | 0.12% | 25,167 | Shares | 2026-08-13 | |
| Mega Russell Investments Group, Ltd. | $9,266,446 | 0.12% | 24,584 | Shares | 2026-08-06 | |
| Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $9,178,622 | 0.12% | 24,351 | Shares | 2026-07-23 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $8,950,956 | 0.11% | 23,747 | Shares | 2026-08-24 | |
| Small Phocas Financial Corp. Registered adviser | $8,751,937 | 0.11% | 23,219 | Shares | 2026-07-31 | |
| Large ProShare Advisors LLC Registered adviser | $8,657,328 | 0.11% | 22,968 | Shares | 2026-08-11 | |
| Mid Hillsdale Investment Management Inc. Registered adviser | $8,624,158 | 0.11% | 22,880 | Shares | 2026-08-12 | |
| Mega D. E. Shaw & Co., Inc. | $7,465,475 | 0.09% | 19,806 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $7,293,972 | 0.09% | 19,351 | Shares | 2026-08-14 | |
| Mega Creative Planning Registered adviser | $6,900,080 | 0.09% | 18,306 | Shares | 2026-08-13 | |
| Small AGMAN CAPITAL LLC Registered adviser | $6,846,933 | 0.09% | 18,165 | Shares | 2026-07-27 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $6,787,755 | 0.09% | 18,008 | Shares | 2026-08-13 | |
| Large CANADA LIFE ASSURANCE Co | $6,414,217 | 0.08% | 17,017 | Shares | 2026-08-13 | |
| Mega AMERICAN CENTURY COMPANIES INC | $6,239,322 | 0.08% | 16,553 | Shares | 2026-08-12 | |
| Large NATIXIS ADVISORS, LLC Registered adviser | $6,003,741 | 0.08% | 15,928 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5,955,494 | 0.07% | 15,800 | Put | 2026-08-14 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $5,370,497 | 0.07% | 14,248 | Shares | 2026-08-13 | |
| Large GREAT LAKES ADVISORS, LLC Registered adviser | $5,326,774 | 0.07% | 14,132 | Shares | 2026-08-10 | |
| Large FIFTH THIRD BANCORP Bank | $5,203,895 | 0.07% | 13,806 | Shares | 2026-08-05 |
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