PLUN · Plutonian Acquisition Corp. II · Holdings
Substantial doubt about the company's ability to continue as a going concern.
“In connection with the Company's assessment of going concern considerations in accordance with ASC 205-40, Presentation of Financial Statements—Going Concern, management has determined that the Company lacks the financial resources necessary to sustain operations for a reasonable period of time, which is considered to be one year from the date these financial statements are issued. There can be no assurance that the Company's plans to raise additional capital or to consummate an initial Business Combination will be successful before the mandatory liquidation date. These conditions raise substantial doubt about the Company's ability to continue as a going concern until the earlier of the consummation of an initial Business Combination or the date the Company is required to liquidate.”View the 10-Q filed Jul 15, 2026
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holder Concentration
Across 19 13F filersWho Holds PLUN
Last 1 quarters through Jun 30, 2026Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026: 19 filers, like-for-like change —.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 41.9% | 7 | new |
| Exempt adviser | 3.7% | 1 | new |
| Adviser | 10.5% | 1 | new |
| Bank | 13.5% | 1 | new |
| Insurer | 4.2% | 1 | new |
| Unknown | 26.3% | 8 | new |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 6.6% | 1 | new |
| Systematic-like | 8.8% | 2 | new |
| Concentrated | 2.8% | 2 | new |
| Diversified active | 81.8% | 14 | new |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 6.6% | 1 | new |
| Medium turnover | 30.5% | 5 | new |
| High turnover | 56.9% | 9 | new |
| Unknown | 6.0% | 4 | new |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 49.5% | 9 | new |
| Medium horizon | 7.7% | 2 | new |
| Long horizon | 24.1% | 3 | new |
| Unknown | 18.7% | 5 | new |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 27.0% | 7 | new |
| $1B to $10B | 47.9% | 8 | new |
| $10B to $100B | 18.4% | 3 | new |
| $100B or more | 6.6% | 1 | new |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.0% | 1 | new |
| Pooled investment vehicles | 41.9% | 6 | new |
| Unknown | 58.1% | 12 | new |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 45.6% | 7 | new |
| No private funds | 0.0% | 1 | new |
| Unknown | 54.4% | 11 | new |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 81.7% | 16 | new |
| Outside the US | 18.3% | 3 | new |
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Conviction and Crowding
19 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Shared Holders
Companies PLUN's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | ARCL ARC Group Acquisition I Corp. | 5 |
| 2 | CUB Lionheart Holdings | 6 |
| 3 | FSHP Flag Ship Acquisition Corp | 3 |
| 4 | TRAD APEX Tech Acquisition Inc. | 6 |
| 5 | YCY AA Mission Acquisition Corp. II | 7 |
| 6 | SOUL Soulpower Acquisition Corp. | 8 |
| 7 | OBA Oxley Bridge Acquisition Ltd | 4 |
| 8 | BREZ Breeze Acquisition Corp. II | 4 |
| 9 | VECA Vernal Capital Acquisition Corp. | 5 |
| 10 | XRPNU Armada Acquisition Corp. II | 5 |
Shareholder Targets
13F filers that own its peers but not PLUN, quarter ended Jun 30, 2026Found through its holder-overlap peers: ARCL, CUB, FSHP, TRAD, YCY, SOUL, OBA, BREZ, VECA, XRPNU, ALPX, APUR, FVN, MUZE, EURK, NPAC, CLBR, APXT, COPL, NTWO. 120 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Magnetar Financial LLC Registered adviser, Concentrated | $133,311,214 14 held | NPAC, SOUL, NTWO |
| 2 | AQR Arbitrage LLC Registered adviser, Diversified active | $132,871,002 19 held | CUB, NPAC, SOUL |
| 3 | Westchester Capital Management, LLC Registered adviser, Diversified active | $102,060,130 15 held | SOUL, NPAC, APXT |
| 4 | TENOR CAPITAL MANAGEMENT Co., L.P. Registered adviser, Diversified active | $97,394,860 10 held | XRPNU, SOUL, NPAC |
| 5 | ARISTEIA CAPITAL, L.L.C. Registered adviser, Diversified active | $97,322,658 14 held | MUZE, NPAC, COPL |
| 6 | GLAZER CAPITAL, LLC Registered adviser, Diversified active | $91,195,037 15 held | NPAC, APXT, OBA |
| 7 | Karpus Management, Inc. Adviser, Diversified active | $86,852,591 12 held | COPL, VECA, APXT |
| 8 | Linden Advisors LP Registered adviser, Diversified active | $86,207,635 13 held | CUB, NPAC, NTWO |
| 9 | Polar Asset Management Partners Inc. Registered adviser, Systematic-like | $83,912,996 16 held | BREZ, CUB, APUR |
| 10 | Radcliffe Capital Management, L.P. Registered adviser, Diversified active | $61,633,145 13 held | NPAC, SOUL, APXT |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid HIGHBRIDGE CAPITAL MANAGEMENT LLC Registered adviser | $9,871,166 | 20.74% | 992,077 | Shares | 2026-08-14 | |
| Large TORONTO DOMINION BANK Bank | $6,430,505 | 13.51% | 646,282 | Shares | 2026-08-14 | |
| Small Crossingbridge Advisors, LLC Adviser | $4,975,000 | 10.45% | 500,000 | Shares | 2026-08-13 | |
| Mid MIZUHO SECURITIES USA LLC | $3,165,234 | 6.65% | 318,114 | Shares | 2026-07-28 | |
| Mega D. E. Shaw & Co., Inc. | $3,164,100 | 6.65% | 318,000 | Shares | 2026-08-14 | |
| Small Shaolin Capital Management LLC Registered adviser | $3,129,653 | 6.57% | 314,538 | Shares | 2026-08-14 | |
| Mid WHITEBOX ADVISORS LLC Registered adviser | $2,487,500 | 5.23% | 250,000 | Shares | 2026-08-14 | |
| Mid WOLVERINE ASSET MANAGEMENT LLC Registered adviser | $2,439,889 | 5.13% | 245,215 | Shares | 2026-08-10 | |
| Mid BERKLEY W R CORP Insurer | $1,976,169 | 4.15% | 198,610 | Shares | 2026-08-14 | |
| Mid StoneX Group Inc. | $1,860,162 | 3.91% | 186,951 | Shares | 2026-08-12 | |
| Mid Periscope Capital Inc. Exempt adviser | $1,766,403 | 3.71% | 177,528 | Shares | 2026-08-11 | |
| Large Clear Street Group Inc. | $1,352,941 | 2.84% | 135,974 | Shares | 2026-08-12 | |
| Mid BOOTHBAY FUND MANAGEMENT, LLC Registered adviser | $1,004,054 | 2.11% | 100,910 | Shares | 2026-08-14 | |
| Large Hudson Bay Capital Management LP Registered adviser | $995,000 | 2.09% | 100,000 | Shares | 2026-08-14 | |
| Small RLH Capital LLC | $995,000 | 2.09% | 100,000 | Shares | 2026-08-10 | |
| Small HEIGHTS CAPITAL MANAGEMENT, INC | $995,000 | 2.09% | 100,000 | Shares | 2026-08-14 | |
| Mid Quarry LP | $497,500 | 1.05% | 50,000 | Shares | 2026-08-14 | |
| Small L1 Global Manager Pty Ltd | $497,500 | 1.05% | 50,000 | Shares | 2026-08-13 | |
| Mid SHP Wealth Management Registered adviser | $497 | 0.00% | 50 | Shares | 2026-08-11 |