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Institutional Ownership · SEC Form 13F

Who owns PLMK (PLMK)


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

77
Institutional holders
23,980,880
Shares held (tracked funds)

How the tape is positioned

12 tracked funds added or opened PLMK while 10 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

PLMK’s largest tracked holder by dollar value, TENOR CAPITAL MANAGEMENT Co., L.P., sizes it at 2.5% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 2.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in PLMK 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 56 tracked filers holding PLMK, 21 increased or opened the position and 24 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.

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 PLMK 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 4

  • SONA ASSET MANAGEMENT (US) LLC$4M
  • CANTOR FITZGERALD, L. P.$2M
  • JPMORGAN CHASE & CO$2M
  • HIGHBRIDGE CAPITAL MANAGEMENT LLC$2M

Full exits 3

  • COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS$1M
  • HGC Investment Management Inc.$1M
  • Centiva Capital, LP$1M

Largest adds

  • TENOR CAPITAL MANAGEMENT Co., L.P.$80M
  • Context Capital Management, LLC$37M
  • TORONTO DOMINION BANK$5M
  • BOOTHBAY FUND MANAGEMENT, LLC$3M
  • MIZUHO SECURITIES USA LLC$2M
  • MILLENNIUM MANAGEMENT LLC$984K

Largest trims

  • METEORA CAPITAL, LLC$221M
  • Governors Lane LP$7M
  • First Trust Capital Management L.P.$4M
  • Hudson Bay Capital Management LP$3M
  • Westchester Capital Management, LLC$3M
  • Verition Fund Management LLC$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
TENOR CAPITAL MANAGEMENT Co., L.P. trimmed350,000$175M39.2%2026-Q1
Context Capital Management, LLC trimmed266,259$133M29.8%2026-Q1
METEORA CAPITAL, LLC added1,151,242$12M2.7%2026-Q1
Westchester Capital Management, LLC trimmed921,100$10M2.2%2026-Q1
D. E. Shaw & Co., Inc.853,875$9M2.0%2026-Q1
BERKLEY W R CORP added804,192$8M1.9%2026-Q1
GLAZER CAPITAL, LLC trimmed782,959$8M1.9%2026-Q1
Karpus Management, Inc. trimmed662,200$7M1.6%2026-Q1
MIZUHO SECURITIES USA LLC added603,467$6M1.4%2026-Q1
Magnetar Financial LLC500,000$5M1.2%2026-Q1
TWO SIGMA INVESTMENTS, LP498,437$5M1.2%2026-Q1
WOLVERINE ASSET MANAGEMENT LLC trimmed491,317$5M1.2%2026-Q1
Radcliffe Capital Management, L.P.449,055$5M1.1%2026-Q1
Polar Asset Management Partners Inc.400,000$4M0.9%2026-Q1
SONA ASSET MANAGEMENT (US) LLC added350,000$4M0.8%2026-Q1
RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed344,356$4M0.8%2026-Q1
GOLDMAN SACHS GROUP INC added339,882$4M0.8%2026-Q1
BOOTHBAY FUND MANAGEMENT, LLC added312,844$3M0.7%2026-Q1
MILLENNIUM MANAGEMENT LLC added300,100$3M0.7%2026-Q1
First Trust Capital Management L.P. trimmed296,787$3M0.7%2026-Q1
Jain Global LLC250,100$3M0.6%2026-Q1
HEIGHTS CAPITAL MANAGEMENT, INC250,000$3M0.6%2026-Q1
Hudson Bay Capital Management LP trimmed212,406$2M0.5%2026-Q1
CANTOR FITZGERALD, L. P. trimmed190,105$2M0.5%2026-Q1
HIGHBRIDGE CAPITAL MANAGEMENT LLC new173,488$2M0.4%2026-Q1
JPMORGAN CHASE & CO added173,488$2M0.4%2026-Q1
PICTON MAHONEY ASSET MANAGEMENT150,000$2M0.4%2026-Q1
WHITEBOX ADVISORS LLC100,000$1M0.2%2026-Q1
MOORE CAPITAL MANAGEMENT, LP added75,000$792K0.2%2026-Q1
Clear Street Group Inc. added49,857$537K0.1%2026-Q1
Kepos Capital LP50,000$528K0.1%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added33,248$351K0.1%2026-Q1
Walleye Capital LLC added542,051$271K0.1%2026-Q1
Crossingbridge Advisors, LLC25,000$264K0.1%2026-Q1
TORONTO DOMINION BANK added514,285$257K0.1%2026-Q1
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND500,000$245K0.1%2026-Q1
AQR Arbitrage LLC added481,752$236K0.1%2026-Q1
Lineage Point Capital LP new427,834$214K0.0%2026-Q1
Linden Advisors LP trimmed350,000$157K0.0%2026-Q1
Governors Lane LP350,000$157K0.0%2026-Q1
LMR Partners LLP trimmed250,000$125K0.0%2026-Q1
Alberta Investment Management Corp trimmed250,000$125K0.0%2026-Q1
HRT FINANCIAL LP trimmed10,739$113K0.0%2026-Q1
CITADEL ADVISORS LLC trimmed10,175$107K0.0%2026-Q1
Shaolin Capital Management LLC trimmed182,859$91K0.0%2026-Q1
Periscope Capital Inc. trimmed175,000$86K0.0%2026-Q1
BNP PARIBAS FINANCIAL MARKETS169,785$85K0.0%2026-Q1
DLD Asset Management, LP added161,846$81K0.0%2026-Q1
Saba Capital Management, L.P.99,999$45K0.0%2026-Q1
Wealthspring Capital LLC trimmed88,910$44K0.0%2026-Q1
ARISTEIA CAPITAL, L.L.C. trimmed98,501$44K0.0%2026-Q1
Parallax Volatility Advisers, L.P. added57,443$34K0.0%2026-Q1
Verition Fund Management LLC trimmed24,507$12K0.0%2026-Q1
UBS Group AG170$2K0.0%2026-Q1
MORGAN STANLEY added77$8130.0%2026-Q1
LONGFELLOW INVESTMENT MANAGEMENT CO LLC trimmed237$1190.0%2026-Q1
Schechter Investment Advisors, LLC added232,000$2M0.5%2025-Q1 stale
K2 PRINCIPAL FUND, L.P. trimmed195,699$2M0.4%2025-Q1 stale
MIZUHO SECURITIES USA LLC added150,372$2M0.3%2025-Q1 stale
BCK Capital Management LP added103,313$1M0.2%2025-Q3 stale
HGC Investment Management Inc.100,000$1M0.2%2025-Q4 stale
Centiva Capital, LP100,000$1M0.2%2025-Q4 stale
CLEAR STREET LLC added48,565$503K0.1%2025-Q2 stale
Tuttle Capital Management, LLC added40,000$404K0.1%2025-Q1 stale
Schonfeld Strategic Advisors LLC trimmed34,057$356K0.1%2025-Q4 stale
Virtu Financial LLC trimmed33,772$352K0.1%2025-Q4 stale
ABC ARBITRAGE SA new15,000$157K0.0%2025-Q4 stale
CSS LLC/IL trimmed170,835$46K0.0%2025-Q4 stale
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS trimmed121,000$33K0.0%2025-Q4 stale
GRITSTONE ASSET MANAGEMENT LLC12,362$3K0.0%2025-Q4 stale
Farther Finance Advisors, LLC trimmed2,000$5400.0%2025-Q3 stale
BANK OF AMERICA CORP /DE/ added200$330.0%2025-Q1 stale
CONCOURSE FINANCIAL GROUP SECURITIES, INC.00.0%2025-Q2 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.

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