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PLUN · Plutonian Acquisition Corp. II · Holdings

Track PLUN — free
$10.16 +0.00 (+0.00%) At close · Oct 20
Market Cap
$115.66M
Shares
11.38M
Volume · Oct 20 115 Avg daily vol (3M) 39.12K

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.

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
Holders: 19
Total Value: $47,603,273
Total Shares: 4,784,249

Holder Concentration

Across 19 13F filers
Top Holder
20.7%
of institutional value
Top 5
58.0%
of institutional value
Top 10
83.0%
of institutional value
HHI
981
Broadly held

Who Holds PLUN

Last 1 quarters through Jun 30, 2026

Each 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
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, 2026

Measured 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.

Conviction holders
0
0.000% of filers hold it in their top 10
Holders above 5%
0
median weight 0.102%
Crowding
—
no cover-page share count is dated within about a year of the quarter end
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
no cover-page share count is dated within about a year of the quarter end
Top 10 holders
83.0%
of 13F shares, Herfindahl 0.098
Active holders
—
like-for-like share change of active filers
5% stakes on record
2
0 13D, 2 13G (2 institutional, 0 passive, 0 exempt)
How long holders have held it value-weighted 1.0 quarters
Under 1 year 100.0% 1 to 3 years 0.000% 3 years or more 0.000% Since coverage start 0.000%

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, 2026

Found 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
1 Magnetar Financial LLC Registered adviser, Concentrated $133,311,214 14 held
2 AQR Arbitrage LLC Registered adviser, Diversified active $132,871,002 19 held
3 Westchester Capital Management, LLC Registered adviser, Diversified active $102,060,130 15 held
4 TENOR CAPITAL MANAGEMENT Co., L.P. Registered adviser, Diversified active $97,394,860 10 held
5 ARISTEIA CAPITAL, L.L.C. Registered adviser, Diversified active $97,322,658 14 held
6 GLAZER CAPITAL, LLC Registered adviser, Diversified active $91,195,037 15 held
7 Karpus Management, Inc. Adviser, Diversified active $86,852,591 12 held
8 Linden Advisors LP Registered adviser, Diversified active $86,207,635 13 held
9 Polar Asset Management Partners Inc. Registered adviser, Systematic-like $83,912,996 16 held
10 Radcliffe Capital Management, L.P. Registered adviser, Diversified active $61,633,145 13 held
Showing 19 of 19
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 2065661 CUSIP G71382108