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Institutional Ownership · SEC Form 13F

Who owns NPKI (NPKI)


Which tracked institutional funds hold NPKI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NPKI 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.

246
Institutional holders
75,991,609
Shares held (tracked funds)
84.3%
Of shares outstanding

How the tape is positioned

85 tracked funds added or opened NPKI while 33 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

NPKI’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 NPKI more heavily than its largest holder by dollar value does.

Book-share is each fund’s reported value in NPKI 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 246 tracked filers holding NPKI, 124 increased or opened the position and 127 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 NPKI 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 17

  • VANGUARD CAPITAL MANAGEMENT LLC$50M
  • Electron Capital Partners, LLC$16M
  • VANGUARD PORTFOLIO MANAGEMENT LLC$12M
  • AXIOM INVESTORS LLC /DE$11M
  • VANGUARD FIDUCIARY TRUST CO$8M
  • Asset Management One Co., Ltd.$7M

Full exits 10

  • VANGUARD GROUP INC$49M
  • Pennant Select, LLC$12M
  • TWO SIGMA ADVISERS, LP$4M
  • TUDOR INVESTMENT CORP ET AL$3M
  • G2 Investment Partners Management LLC$3M
  • Verition Fund Management LLC$2M

Largest adds

  • BlackRock, Inc.$22M
  • AMERIPRISE FINANCIAL INC$20M
  • WASATCH ADVISORS LP$16M
  • Allianz Asset Management GmbH$11M
  • ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$10M
  • TWO SIGMA INVESTMENTS, LP$9M

Largest trims

  • BRIDGEWAY CAPITAL MANAGEMENT, LLC$7M
  • ALGERT GLOBAL LLC$4M
  • Empowered Funds, LLC$4M
  • ArrowMark Colorado Holdings LLC$3M
  • Roubaix Capital, LLC$3M
  • WELLINGTON MANAGEMENT GROUP LLP$2M

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
BlackRock, Inc. added7,202,705$104M8.9%2026-Q1
AMERIPRISE FINANCIAL INC added5,623,552$81M7.0%2026-Q1
DIMENSIONAL FUND ADVISORS LP trimmed3,983,658$58M4.9%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new3,424,942$50M4.3%2026-Q1
AMERICAN CENTURY COMPANIES INC trimmed3,043,763$44M3.8%2026-Q1
WASATCH ADVISORS LP added2,899,021$42M3.6%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added2,244,164$33M2.8%2026-Q1
ROYCE & ASSOCIATES LP trimmed2,071,010$30M2.6%2026-Q1
STATE STREET CORP trimmed1,955,319$28M2.4%2026-Q1
MORGAN STANLEY added1,823,060$26M2.3%2026-Q1
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. trimmed1,818,790$26M2.3%2026-Q1
Russell Investments Group, Ltd. trimmed1,726,243$25M2.1%2026-Q1
PRUDENTIAL FINANCIAL INC trimmed1,686,629$24M2.1%2026-Q1
Thrivent Financial for Lutherans added1,665,623$24M2.1%2026-Q1
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added1,539,088$22M1.9%2026-Q1
LOOMIS SAYLES & CO L P trimmed1,177,993$17M1.5%2026-Q1
Allianz Asset Management GmbH added1,156,530$17M1.4%2026-Q1
Qube Research & Technologies Ltd added1,140,585$17M1.4%2026-Q1
Electron Capital Partners, LLC new1,099,943$16M1.4%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed1,095,601$16M1.4%2026-Q1
Nuveen, LLC trimmed1,073,065$16M1.3%2026-Q1
TWO SIGMA INVESTMENTS, LP added1,060,904$15M1.3%2026-Q1
GOLDMAN SACHS GROUP INC added1,011,689$15M1.3%2026-Q1
NORTHERN TRUST CORP added968,501$14M1.2%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new861,467$12M1.1%2026-Q1
SEI INVESTMENTS CO added837,157$12M1.0%2026-Q1
Tieton Capital Management, LLC added835,920$12M1.0%2026-Q1
AXIOM INVESTORS LLC /DE new737,325$11M0.9%2026-Q1
Ancora Advisors LLC trimmed727,350$11M0.9%2026-Q1
PANAGORA ASSET MANAGEMENT INC added677,552$10M0.8%2026-Q1
CANNELL CAPITAL LLC trimmed654,689$9M0.8%2026-Q1
SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed605,269$9M0.8%2026-Q1
ArrowMark Colorado Holdings LLC trimmed566,395$8M0.7%2026-Q1
FIRST SABREPOINT CAPITAL MANAGEMENT LP trimmed550,000$8M0.7%2026-Q1
RICE HALL JAMES & ASSOCIATES, LLC trimmed545,077$8M0.7%2026-Q1
VANGUARD FIDUCIARY TRUST CO new536,003$8M0.7%2026-Q1
Uniplan Investment Counsel, Inc. trimmed527,684$8M0.7%2026-Q1
OBERWEIS ASSET MANAGEMENT INC/ added518,150$8M0.6%2026-Q1
Asset Management One Co., Ltd. new505,520$7M0.6%2026-Q1
Granahan Investment Management, LLC trimmed401,658$6M0.5%2026-Q1
OP Asset Management Ltd added333,418$6M0.5%2026-Q1
JACOBS LEVY EQUITY MANAGEMENT, INC trimmed381,438$6M0.5%2026-Q1
PARAGON ASSOCIATES & PARAGON ASSOCIATES II JOINT VENTURE trimmed375,000$5M0.5%2026-Q1
ALGERT GLOBAL LLC trimmed370,908$5M0.5%2026-Q1
RENAISSANCE TECHNOLOGIES LLC trimmed362,167$5M0.4%2026-Q1
Calamos Advisors LLC trimmed353,627$5M0.4%2026-Q1
MARATHON CAPITAL MANAGEMENT trimmed346,110$5M0.4%2026-Q1
JANE STREET GROUP, LLC added337,699$5M0.4%2026-Q1
UBS Group AG added312,551$5M0.4%2026-Q1
Point72 Asset Management, L.P. trimmed304,183$4M0.4%2026-Q1
First Eagle Investment Management, LLC added273,821$4M0.3%2026-Q1
Roubaix Capital, LLC trimmed269,935$4M0.3%2026-Q1
Invesco Ltd. added268,451$4M0.3%2026-Q1
Bank of New York Mellon Corp trimmed266,284$4M0.3%2026-Q1
WELLINGTON MANAGEMENT GROUP LLP trimmed264,617$4M0.3%2026-Q1
BANK OF AMERICA CORP /DE/ added240,022$3M0.3%2026-Q1
AQR CAPITAL MANAGEMENT LLC added237,501$3M0.3%2026-Q1
Fisher Asset Management, LLC added233,017$3M0.3%2026-Q1
JPMORGAN CHASE & CO trimmed207,952$3M0.3%2026-Q1
KENNEDY CAPITAL MANAGEMENT LLC added187,651$3M0.2%2026-Q1
HARBOR CAPITAL ADVISORS, INC. trimmed185,603$3M0.2%2026-Q1
RAYMOND JAMES FINANCIAL INC trimmed180,137$3M0.2%2026-Q1
1492 Capital Management LLC trimmed176,003$3M0.2%2026-Q1
Swiss National Bank166,600$2M0.2%2026-Q1
Skylands Capital, LLC trimmed164,300$2M0.2%2026-Q1
GILDER GAGNON HOWE & CO LLC trimmed160,596$2M0.2%2026-Q1
MILLENNIUM MANAGEMENT LLC added158,892$2M0.2%2026-Q1
LAZARD ASSET MANAGEMENT LLC trimmed158,527$2M0.2%2026-Q1
Riverwater Partners LLC trimmed155,150$2M0.2%2026-Q1
Campbell & CO Investment Adviser LLC added144,002$2M0.2%2026-Q1
IRONWOOD INVESTMENT MANAGEMENT LLC trimmed140,616$2M0.2%2026-Q1
Engineers Gate Manager LP added138,946$2M0.2%2026-Q1
Squarepoint Ops LLC added138,068$2M0.2%2026-Q1
ExodusPoint Capital Management, LP added135,822$2M0.2%2026-Q1
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added129,633$2M0.2%2026-Q1
Panoramic Capital, LLC trimmed127,754$2M0.2%2026-Q1
Jump Financial, LLC trimmed124,975$2M0.2%2026-Q1
Man Group plc added124,779$2M0.2%2026-Q1
North Star Investment Management Corp. new120,000$2M0.1%2026-Q1
RHUMBLINE ADVISERS trimmed117,604$2M0.1%2026-Q1
Y-Intercept (Hong Kong) Ltd added110,282$2M0.1%2026-Q1
FRANKLIN RESOURCES INC added105,147$2M0.1%2026-Q1
PRINCIPAL FINANCIAL GROUP INC trimmed104,255$2M0.1%2026-Q1
CROWN ADVISORS MANAGEMENT, INC. new100,000$1M0.1%2026-Q1
SG Americas Securities, LLC added95,553$1M0.1%2026-Q1
DARK FOREST CAPITAL MANAGEMENT LP added93,702$1M0.1%2026-Q1
Round Rock Advisors LLC added92,505$1M0.1%2026-Q1
GSA CAPITAL PARTNERS LLP trimmed83,974$1M0.1%2026-Q1
VANGUARD GROUP INC trimmed4,070,414$49M4.2%2025-Q4 stale
Conversant Capital LLC trimmed2,714,779$23M2.0%2025-Q2 stale
ACK Asset Management LLC added1,576,808$18M1.5%2025-Q3 stale
Pennant Select, LLC trimmed1,014,221$12M1.0%2025-Q4 stale
TWO SIGMA ADVISERS, LP added347,691$4M0.4%2025-Q4 stale
Cubist Systematic Strategies, LLC added246,944$3M0.2%2025-Q3 stale
TUDOR INVESTMENT CORP ET AL trimmed224,475$3M0.2%2025-Q4 stale
G2 Investment Partners Management LLC trimmed210,823$3M0.2%2025-Q4 stale
Verition Fund Management LLC added175,974$2M0.2%2025-Q4 stale
Perritt Capital Management Inc138,500$2M0.1%2025-Q4 stale
Trexquant Investment LP added172,472$1M0.1%2025-Q2 stale
Balyasny Asset Management L.P. added109,824$1M0.1%2025-Q4 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