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Institutional Ownership · SEC Form 13F

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.

211
Institutional holders
92,595,498
Shares held (tracked funds)
68.4%
Of shares outstanding

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).

FundSharesReported value% of valueQuarter
MILLENNIUM MANAGEMENT LLC trimmed121,250$768M34.1%2026-Q1
Fortress Investment Group LLC14,178,054$227M10.1%2026-Q1
Clutterbuck Capital Management LLC added9,300,806$150M6.7%2026-Q1
BlackRock, Inc. added7,477,595$120M5.3%2026-Q1
Wolf Hill Capital Management, LP added7,040,191$113M5.0%2026-Q1
SUSQUEHANNA ADVISORS GROUP, INC. added5,550,124$89M4.0%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new3,902,659$63M2.8%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new2,352,376$38M1.7%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added2,342,370$38M1.7%2026-Q1
STATE STREET CORP added2,234,917$36M1.6%2026-Q1
Ancora Advisors LLC added2,170,175$35M1.5%2026-Q1
VAN ECK ASSOCIATES CORP added1,925,907$31M1.4%2026-Q1
PLUSTICK MANAGEMENT LLC trimmed1,708,000$27M1.2%2026-Q1
Empyrean Capital Partners, LP trimmed1,432,000$23M1.0%2026-Q1
JANE STREET GROUP, LLC added1,075,542$17M0.8%2026-Q1
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed1,069,332$17M0.8%2026-Q1
GROUP ONE TRADING LLC trimmed1,030,154$17M0.7%2026-Q1
LMR Partners LLP added2,059,957$13M0.6%2026-Q1
NORTHERN TRUST CORP added793,974$13M0.6%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed745,006$12M0.5%2026-Q1
GOLDMAN SACHS GROUP INC trimmed627,109$10M0.4%2026-Q1
VANGUARD FIDUCIARY TRUST CO new623,129$10M0.4%2026-Q1
GENERAL AMERICAN INVESTORS CO INC trimmed620,210$10M0.4%2026-Q1
BARCLAYS PLC added567,970$9M0.4%2026-Q1
Philosophy Capital Management LLC trimmed550,000$9M0.4%2026-Q1
Caption Management, LLC added1,341,250$8M0.4%2026-Q1
SONA ASSET MANAGEMENT (US) LLC added521,477$8M0.4%2026-Q1
CITADEL ADVISORS LLC trimmed508,521$8M0.4%2026-Q1
Point72 Asset Management, L.P. added455,869$7M0.3%2026-Q1
Interval Partners, LP trimmed434,877$7M0.3%2026-Q1
MORGAN STANLEY added372,282$6M0.3%2026-Q1
Greenhaven Road Investment Management, L.P. added349,333$6M0.2%2026-Q1
COMMONWEALTH EQUITY SERVICES, LLC trimmed323,172$5M0.2%2026-Q1
BOOTHBAY FUND MANAGEMENT, LLC added320,000$5M0.2%2026-Q1
LPL Financial LLC trimmed312,491$5M0.2%2026-Q1
Qube Research & Technologies Ltd added302,045$5M0.2%2026-Q1
Walleye Capital LLC added300,353$5M0.2%2026-Q1
FIRST TRUST ADVISORS LP added296,391$5M0.2%2026-Q1
Nuveen, LLC added276,822$4M0.2%2026-Q1
BANK OF AMERICA CORP /DE/ added260,018$4M0.2%2026-Q1
Bank of New York Mellon Corp trimmed254,530$4M0.2%2026-Q1
Steward Partners Investment Advisory, LLC trimmed242,078$4M0.2%2026-Q1
IMC-Chicago, LLC trimmed204,800$3M0.1%2026-Q1
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added202,757$3M0.1%2026-Q1
Sender Co & Partners, Inc. added202,609$3M0.1%2026-Q1
TUDOR INVESTMENT CORP ET AL added192,941$3M0.1%2026-Q1
Walleye Trading LLC trimmed159,728$3M0.1%2026-Q1
Cambridge Investment Research Advisors, Inc. added147,252$2M0.1%2026-Q1
Swiss National Bank146,100$2M0.1%2026-Q1
Quinn Opportunity Partners LLC added145,747$2M0.1%2026-Q1
WITTENBERG INVESTMENT MANAGEMENT, INC. added128,300$2M0.1%2026-Q1
BOSTON FAMILY OFFICE LLC125,000$2M0.1%2026-Q1
Numerai GP LLC added124,055$2M0.1%2026-Q1
Cannell & Spears LLC added122,851$2M0.1%2026-Q1
DigitalBridge Group, Inc. added119,500$2M0.1%2026-Q1
ALLIANCEBERNSTEIN L.P. added110,575$2M0.1%2026-Q1
FMR LLC added111,821$2M0.1%2026-Q1
RHUMBLINE ADVISERS added111,799$2M0.1%2026-Q1
ROYCE & ASSOCIATES LP trimmed103,930$2M0.1%2026-Q1
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added97,347$2M0.1%2026-Q1
Prentice Capital Management, LP trimmed252,000$2M0.1%2026-Q1
DEUTSCHE BANK AG\ added93,651$2M0.1%2026-Q1
Cruiser Capital Advisors, LLC88,854$1M0.1%2026-Q1
MILFAM LLC new250,000$1M0.1%2026-Q1
RAYMOND JAMES FINANCIAL INC trimmed80,514$1M0.1%2026-Q1
ARISTEIA CAPITAL, L.L.C. added183,236$1M0.1%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/ added70,119$1M0.0%2026-Q1
Brevan Howard Capital Management LP added69,943$1M0.0%2026-Q1
Invesco Ltd. added66,028$1M0.0%2026-Q1
Legal & General Group Plc trimmed57,632$923K0.0%2026-Q1
BLAIR WILLIAM & CO/IL57,000$913K0.0%2026-Q1
Wharton Business Group, LLC56,360$903K0.0%2026-Q1
MetLife Investment Management, LLC added54,187$868K0.0%2026-Q1
JPMORGAN CHASE & CO added56,310$860K0.0%2026-Q1
Rockefeller Capital Management L.P. trimmed52,564$842K0.0%2026-Q1
D. E. Shaw & Co., Inc. trimmed50,322$806K0.0%2026-Q1
BRC Group Holdings, Inc. trimmed50,000$801K0.0%2026-Q1
VANGUARD ASSET MANAGEMENT, Ltd new48,531$777K0.0%2026-Q1
MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed47,404$759K0.0%2026-Q1
SIMPLEX TRADING, LLC trimmed46,584$746K0.0%2026-Q1
Creative Planning added45,773$733K0.0%2026-Q1
VANGUARD GROUP INC trimmed6,213,465$103M4.6%2025-Q4 stale
FLEMING JAMES B JR trimmed3,923,143$60M2.7%2025-Q2 stale
Troluce Capital Advisors LLC new421,721$5M0.2%2025-Q1 stale
Epoch Investment Partners, Inc. trimmed284,285$4M0.2%2025-Q3 stale
CSS LLC/IL added600,219$3M0.1%2025-Q3 stale
GILDER GAGNON HOWE & CO LLC trimmed188,866$3M0.1%2025-Q4 stale
Utah Retirement Systems166,085$3M0.1%2025-Q2 stale
Blue Owl Capital Holdings LP new198,760$2M0.1%2025-Q1 stale
Verition Fund Management LLC trimmed112,540$2M0.1%2025-Q4 stale
VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed113,650$2M0.1%2025-Q3 stale
Fairway Wealth LLC100,000$2M0.1%2025-Q2 stale
HRT FINANCIAL LP added79,098$1M0.1%2025-Q4 stale
ZAZOVE ASSOCIATES LLC added170,655$1M0.1%2025-Q4 stale
Union Square Park Capital Management, LLC new100,000$1M0.1%2025-Q1 stale
Private Advisor Group, LLC trimmed56,667$943K0.0%2025-Q4 stale
Paloma Partners Management Co trimmed75,000$913K0.0%2025-Q1 stale
WOLVERINE TRADING, LLC trimmed56,177$830K0.0%2025-Q3 stale
ExodusPoint Capital Management, LP trimmed48,514$807K0.0%2025-Q4 stale
CAXTON ASSOCIATES LLP new54,257$776K0.0%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.

HoldersTotal shares

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.

Learn how to read institutional ownership