Who owns NN (NN)
Which tracked institutional funds hold NN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NN 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
35 tracked funds added or opened NN while 41 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
NN’s largest tracked holder by dollar value, MILLENNIUM MANAGEMENT LLC, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in NN 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 199 tracked filers holding NN, 122 increased or opened the position and 73 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 NN 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 14
- VANGUARD CAPITAL MANAGEMENT LLC$63M
- MILFAM LLC$42M
- VANGUARD PORTFOLIO MANAGEMENT LLC$38M
- VANGUARD FIDUCIARY TRUST CO$10M
- Qube Research & Technologies Ltd$5M
- Numerai GP LLC$2M
Full exits 10
- VANGUARD GROUP INC$103M
- GILDER GAGNON HOWE & CO LLC$3M
- Verition Fund Management LLC$2M
- HRT FINANCIAL LP$1M
- ZAZOVE ASSOCIATES LLC$1M
- Private Advisor Group, LLC$943K
Largest adds
- MILLENNIUM MANAGEMENT LLC$780M
- Clutterbuck Capital Management LLC$55M
- Wolf Hill Capital Management, LP$27M
- UBS Group AG$9M
- VAN ECK ASSOCIATES CORP$8M
- Greenhaven Road Investment Management, L.P.$5M
Largest trims
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$26M
- GROUP ONE TRADING LLC$19M
- CITADEL ADVISORS LLC$12M
- Fortress Investment Group LLC$9M
- Empyrean Capital Partners, LP$8M
- PLUSTICK MANAGEMENT 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 |
|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC trimmed | 121,250 | $768M | 34.1% | 2026-Q1 |
| Fortress Investment Group LLC | 14,178,054 | $227M | 10.1% | 2026-Q1 |
| Clutterbuck Capital Management LLC added | 9,300,806 | $150M | 6.7% | 2026-Q1 |
| BlackRock, Inc. added | 7,477,595 | $120M | 5.3% | 2026-Q1 |
| Wolf Hill Capital Management, LP added | 7,040,191 | $113M | 5.0% | 2026-Q1 |
| SUSQUEHANNA ADVISORS GROUP, INC. added | 5,550,124 | $89M | 4.0% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 3,902,659 | $63M | 2.8% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,352,376 | $38M | 1.7% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,342,370 | $38M | 1.7% | 2026-Q1 |
| STATE STREET CORP added | 2,234,917 | $36M | 1.6% | 2026-Q1 |
| Ancora Advisors LLC added | 2,170,175 | $35M | 1.5% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP added | 1,925,907 | $31M | 1.4% | 2026-Q1 |
| PLUSTICK MANAGEMENT LLC trimmed | 1,708,000 | $27M | 1.2% | 2026-Q1 |
| Empyrean Capital Partners, LP trimmed | 1,432,000 | $23M | 1.0% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 1,075,542 | $17M | 0.8% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 1,069,332 | $17M | 0.8% | 2026-Q1 |
| GROUP ONE TRADING LLC trimmed | 1,030,154 | $17M | 0.7% | 2026-Q1 |
| LMR Partners LLP added | 2,059,957 | $13M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 793,974 | $13M | 0.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 745,006 | $12M | 0.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 627,109 | $10M | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 623,129 | $10M | 0.4% | 2026-Q1 |
| GENERAL AMERICAN INVESTORS CO INC trimmed | 620,210 | $10M | 0.4% | 2026-Q1 |
| BARCLAYS PLC added | 567,970 | $9M | 0.4% | 2026-Q1 |
| Philosophy Capital Management LLC trimmed | 550,000 | $9M | 0.4% | 2026-Q1 |
| Caption Management, LLC added | 1,341,250 | $8M | 0.4% | 2026-Q1 |
| SONA ASSET MANAGEMENT (US) LLC added | 521,477 | $8M | 0.4% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 508,521 | $8M | 0.4% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 455,869 | $7M | 0.3% | 2026-Q1 |
| Interval Partners, LP trimmed | 434,877 | $7M | 0.3% | 2026-Q1 |
| MORGAN STANLEY added | 372,282 | $6M | 0.3% | 2026-Q1 |
| Greenhaven Road Investment Management, L.P. added | 349,333 | $6M | 0.2% | 2026-Q1 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 323,172 | $5M | 0.2% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 320,000 | $5M | 0.2% | 2026-Q1 |
| LPL Financial LLC trimmed | 312,491 | $5M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 302,045 | $5M | 0.2% | 2026-Q1 |
| Walleye Capital LLC added | 300,353 | $5M | 0.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 296,391 | $5M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 276,822 | $4M | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 260,018 | $4M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 254,530 | $4M | 0.2% | 2026-Q1 |
| Steward Partners Investment Advisory, LLC trimmed | 242,078 | $4M | 0.2% | 2026-Q1 |
| IMC-Chicago, LLC trimmed | 204,800 | $3M | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 202,757 | $3M | 0.1% | 2026-Q1 |
| Sender Co & Partners, Inc. added | 202,609 | $3M | 0.1% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 192,941 | $3M | 0.1% | 2026-Q1 |
| Walleye Trading LLC trimmed | 159,728 | $3M | 0.1% | 2026-Q1 |
| Cambridge Investment Research Advisors, Inc. added | 147,252 | $2M | 0.1% | 2026-Q1 |
| Swiss National Bank | 146,100 | $2M | 0.1% | 2026-Q1 |
| Quinn Opportunity Partners LLC added | 145,747 | $2M | 0.1% | 2026-Q1 |
| WITTENBERG INVESTMENT MANAGEMENT, INC. added | 128,300 | $2M | 0.1% | 2026-Q1 |
| BOSTON FAMILY OFFICE LLC | 125,000 | $2M | 0.1% | 2026-Q1 |
| Numerai GP LLC added | 124,055 | $2M | 0.1% | 2026-Q1 |
| Cannell & Spears LLC added | 122,851 | $2M | 0.1% | 2026-Q1 |
| DigitalBridge Group, Inc. added | 119,500 | $2M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 110,575 | $2M | 0.1% | 2026-Q1 |
| FMR LLC added | 111,821 | $2M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 111,799 | $2M | 0.1% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 103,930 | $2M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 97,347 | $2M | 0.1% | 2026-Q1 |
| Prentice Capital Management, LP trimmed | 252,000 | $2M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 93,651 | $2M | 0.1% | 2026-Q1 |
| Cruiser Capital Advisors, LLC | 88,854 | $1M | 0.1% | 2026-Q1 |
| MILFAM LLC new | 250,000 | $1M | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 80,514 | $1M | 0.1% | 2026-Q1 |
| ARISTEIA CAPITAL, L.L.C. added | 183,236 | $1M | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 70,119 | $1M | 0.0% | 2026-Q1 |
| Brevan Howard Capital Management LP added | 69,943 | $1M | 0.0% | 2026-Q1 |
| Invesco Ltd. added | 66,028 | $1M | 0.0% | 2026-Q1 |
| Legal & General Group Plc trimmed | 57,632 | $923K | 0.0% | 2026-Q1 |
| BLAIR WILLIAM & CO/IL | 57,000 | $913K | 0.0% | 2026-Q1 |
| Wharton Business Group, LLC | 56,360 | $903K | 0.0% | 2026-Q1 |
| MetLife Investment Management, LLC added | 54,187 | $868K | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 56,310 | $860K | 0.0% | 2026-Q1 |
| Rockefeller Capital Management L.P. trimmed | 52,564 | $842K | 0.0% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 50,322 | $806K | 0.0% | 2026-Q1 |
| BRC Group Holdings, Inc. trimmed | 50,000 | $801K | 0.0% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 48,531 | $777K | 0.0% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 47,404 | $759K | 0.0% | 2026-Q1 |
| SIMPLEX TRADING, LLC trimmed | 46,584 | $746K | 0.0% | 2026-Q1 |
| Creative Planning added | 45,773 | $733K | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 6,213,465 | $103M | 4.6% | 2025-Q4 stale |
| FLEMING JAMES B JR trimmed | 3,923,143 | $60M | 2.7% | 2025-Q2 stale |
| Troluce Capital Advisors LLC new | 421,721 | $5M | 0.2% | 2025-Q1 stale |
| Epoch Investment Partners, Inc. trimmed | 284,285 | $4M | 0.2% | 2025-Q3 stale |
| CSS LLC/IL added | 600,219 | $3M | 0.1% | 2025-Q3 stale |
| GILDER GAGNON HOWE & CO LLC trimmed | 188,866 | $3M | 0.1% | 2025-Q4 stale |
| Utah Retirement Systems | 166,085 | $3M | 0.1% | 2025-Q2 stale |
| Blue Owl Capital Holdings LP new | 198,760 | $2M | 0.1% | 2025-Q1 stale |
| Verition Fund Management LLC trimmed | 112,540 | $2M | 0.1% | 2025-Q4 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 113,650 | $2M | 0.1% | 2025-Q3 stale |
| Fairway Wealth LLC | 100,000 | $2M | 0.1% | 2025-Q2 stale |
| HRT FINANCIAL LP added | 79,098 | $1M | 0.1% | 2025-Q4 stale |
| ZAZOVE ASSOCIATES LLC added | 170,655 | $1M | 0.1% | 2025-Q4 stale |
| Union Square Park Capital Management, LLC new | 100,000 | $1M | 0.1% | 2025-Q1 stale |
| Private Advisor Group, LLC trimmed | 56,667 | $943K | 0.0% | 2025-Q4 stale |
| Paloma Partners Management Co trimmed | 75,000 | $913K | 0.0% | 2025-Q1 stale |
| WOLVERINE TRADING, LLC trimmed | 56,177 | $830K | 0.0% | 2025-Q3 stale |
| ExodusPoint Capital Management, LP trimmed | 48,514 | $807K | 0.0% | 2025-Q4 stale |
| CAXTON ASSOCIATES LLP new | 54,257 | $776K | 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.