Who owns Plum Acquisition Corp. IV (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-Q2 13F filings (latest filed 2026-08-14). 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
The tracked-fund tape on PLMK is one-sided between 2026-Q1 and 2026-Q2: 1 added or opened and 20 trimmed or exited — on balance reducing.
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 2026-Q1 and 2026-Q2, across 48 tracked filers holding PLMK, 6 increased or opened the position and 30 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 2026-Q1 and 2026-Q2 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 1
- Centiva Capital, LP$704K
Full exits 9
- TENOR CAPITAL MANAGEMENT Co., L.P.$182M
- METEORA CAPITAL, LLC$37M
- Westchester Capital Management, LLC$10M
- GLAZER CAPITAL, LLC$8M
- WOLVERINE ASSET MANAGEMENT LLC$5M
- Wealthspring Capital LLC$2M
Largest trims
- Context Capital Management, LLC$139M
- ARISTEIA CAPITAL, L.L.C.$7M
- Karpus Management, Inc.$7M
- Magnetar Financial LLC$5M
- TWO SIGMA INVESTMENTS, LP$5M
- TORONTO DOMINION BANK$5M
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 |
|---|---|---|---|---|
| D. E. Shaw & Co., Inc. | 853,875 | $9M | 2.8% | 2026-Q2 |
| BERKLEY W R CORP added | 805,592 | $9M | 2.6% | 2026-Q2 |
| AQR Arbitrage LLC trimmed | 741,203 | $8M | 2.4% | 2026-Q2 |
| Linden Advisors LP | 700,000 | $7M | 2.3% | 2026-Q2 |
| MIZUHO SECURITIES USA LLC | 603,467 | $6M | 1.9% | 2026-Q2 |
| LMR Partners LLP | 500,000 | $5M | 1.6% | 2026-Q2 |
| Alberta Investment Management Corp | 500,000 | $5M | 1.6% | 2026-Q2 |
| Radcliffe Capital Management, L.P. trimmed | 446,373 | $5M | 1.5% | 2026-Q2 |
| SONA ASSET MANAGEMENT (US) LLC | 350,000 | $4M | 1.1% | 2026-Q2 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed | 344,056 | $4M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC | 339,882 | $4M | 1.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 310,571 | $3M | 1.0% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 300,098 | $3M | 1.0% | 2026-Q2 |
| First Trust Capital Management L.P. | 296,787 | $3M | 1.0% | 2026-Q2 |
| HEIGHTS CAPITAL MANAGEMENT, INC trimmed | 249,569 | $3M | 0.8% | 2026-Q2 |
| Jain Global LLC trimmed | 246,537 | $3M | 0.8% | 2026-Q2 |
| CANTOR FITZGERALD, L. P. | 190,105 | $2M | 0.6% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT | 150,000 | $2M | 0.5% | 2026-Q2 |
| Hudson Bay Capital Management LP trimmed | 100,000 | $1M | 0.3% | 2026-Q2 |
| Periscope Capital Inc. trimmed | 100,000 | $1M | 0.3% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP | 75,000 | $800K | 0.2% | 2026-Q2 |
| Centiva Capital, LP trimmed | 63,922 | $681K | 0.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 56,094 | $598K | 0.2% | 2026-Q2 |
| TORONTO DOMINION BANK trimmed | 49,900 | $532K | 0.2% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 42,690 | $455K | 0.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 32,231 | $344K | 0.1% | 2026-Q2 |
| DELTEC ASSET MANAGEMENT LLC new | 26,284 | $280K | 0.1% | 2026-Q2 |
| Walleye Capital LLC | 542,051 | $244K | 0.1% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 500,000 | $225K | 0.1% | 2026-Q2 |
| Lineage Point Capital LP trimmed | 425,334 | $191K | 0.1% | 2026-Q2 |
| Polar Asset Management Partners Inc. trimmed | 350,000 | $158K | 0.0% | 2026-Q2 |
| Governors Lane LP | 350,000 | $158K | 0.0% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 13,596 | $145K | 0.0% | 2026-Q2 |
| Karpus Management, Inc. trimmed | 11,750 | $125K | 0.0% | 2026-Q2 |
| Context Capital Management, LLC | 266,259 | $120K | 0.0% | 2026-Q2 |
| Magnetar Financial LLC trimmed | 250,000 | $112K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 169,785 | $76K | 0.0% | 2026-Q2 |
| DLD Asset Management, LP | 161,846 | $73K | 0.0% | 2026-Q2 |
| Shaolin Capital Management LLC trimmed | 147,142 | $66K | 0.0% | 2026-Q2 |
| Saba Capital Management, L.P. | 99,999 | $45K | 0.0% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. trimmed | 98,501 | $43K | 0.0% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP new | 61,497 | $28K | 0.0% | 2026-Q2 |
| Parallax Volatility Advisers, L.P. trimmed | 52,443 | $24K | 0.0% | 2026-Q2 |
| WHITEBOX ADVISORS LLC trimmed | 50,000 | $22K | 0.0% | 2026-Q2 |
| Verition Fund Management LLC | 24,507 | $11K | 0.0% | 2026-Q2 |
| LONGFELLOW INVESTMENT MANAGEMENT CO LLC | 474 | $5K | 0.0% | 2026-Q2 |
| UBS Group AG added | 171 | $2K | 0.0% | 2026-Q2 |
| MORGAN STANLEY trimmed | 60 | $640 | 0.0% | 2026-Q2 |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 350,000 | $175M | 53.5% | 2026-Q1 stale (1 quarter behind) |
| METEORA CAPITAL, LLC trimmed | 49,901 | $25M | 7.6% | 2026-Q1 stale (1 quarter behind) |
| Westchester Capital Management, LLC trimmed | 921,100 | $10M | 3.0% | 2026-Q1 stale (1 quarter behind) |
| GLAZER CAPITAL, LLC trimmed | 782,959 | $8M | 2.5% | 2026-Q1 stale (1 quarter behind) |
| WOLVERINE ASSET MANAGEMENT LLC trimmed | 491,317 | $5M | 1.6% | 2026-Q1 stale (1 quarter behind) |
| Wealthspring Capital LLC trimmed | 202,100 | $2M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC new | 173,488 | $2M | 0.6% | 2026-Q1 stale (1 quarter behind) |
| JPMORGAN CHASE & CO new | 173,488 | $2M | 0.6% | 2026-Q1 stale (1 quarter behind) |
| Kepos Capital LP | 50,000 | $528K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Crossingbridge Advisors, LLC | 25,000 | $264K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| HRT FINANCIAL LP new | 10,739 | $113K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS trimmed | 137,513 | $1M | 0.4% | 2025-Q4 stale (2 quarters behind) |
| HGC Investment Management Inc. | 100,000 | $1M | 0.3% | 2025-Q4 stale (2 quarters behind) |
| Schonfeld Strategic Advisors LLC trimmed | 34,057 | $356K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Virtu Financial LLC trimmed | 33,772 | $352K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| ABC ARBITRAGE SA new | 15,000 | $157K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| CSS LLC/IL trimmed | 170,835 | $46K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| GRITSTONE ASSET MANAGEMENT LLC | 12,362 | $3K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| BCK Capital Management LP added | 103,313 | $1M | 0.3% | 2025-Q3 stale (3 quarters behind) |
| Farther Finance Advisors, LLC new | 2,000 | $540 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| CLEAR STREET LLC trimmed | 48,565 | $503K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
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.