Archimedes Tech-30ATIIW Preferred / convertible 13F holders, Q2 2025 (June 30) 35 holders
1 famous investor
$0.53 avg. 13F price*
At the end of Q2 2025 , 35 institutions reported holding Archimedes Tech-30 (ATIIW) in their 13F filings. The largest holders were Mint Tower Capital Management B.V. ($1.5M), Harraden Circle Investments, LLC ($422K) and TENOR CAPITAL MANAGEMENT Co., L.P. ($305K). One famous investor held it David E. Shaw ( of D. E. Shaw & Co.'s portfolio).
Company Archimedes Tech-30
CUSIP G04537125
Latest filing quarter Q2 2026 History Number of 13F holders
Total Exit/New Position Q2 2025 Institutions Total Value New Positions 7 $1.0M Exits 0 $0
Ownership 35 holders Portfolio Manager % of Holder's Portfolio Change Shares Value ▼ Mint Tower Capital Management B.V. — No change 150,000 $1.5M Harraden Circle Investments, LLC — New 1,040,000 $422K TENOR CAPITAL MANAGEMENT Co., L.P. — No change 750,000 $305K Magnetar Financial LLC — No change 650,000 $251K Shaolin Capital Management LLC — Add +79.7% 584,603 $237K CSS LLC — Add +29.8% 532,646 $216K Sculptor Capital LP — New 595,760 $214K Healthcare of Ontario Pension Plan Trust Fund — No change 500,000 $193K AQR Arbitrage LLC — No change 651,618 $182K Linden Advisors LP — No change 499,999 $180K LMR Partners LLP — No change 425,000 $173K Driehaus Capital Management LLC — New 400,000 $154K Alberta Investment Management Corp — New 375,000 $152K D. E. Shaw & Co. — No change 287,500 $111K K2 Principal Fund, L.P. — Add +62.5% 259,895 $107K Glazer Capital, LLC — Reduce -40.5% 249,938 $101K Periscope Capital Inc. — Add +49.1% 223,600 $87K Moore Capital Management, LP — No change 225,000 $87K Westchester Capital Management, LLC — No change 199,999 $77K Governors Lane LP — New 197,403 $71K Clear Street LLC — Add +70.5% 141,967 $58K Schonfeld Strategic Advisors LLC — Reduce -22.9% 135,000 $55K Picton Mahoney Asset Management — No change 125,000 $51K Whitebox Advisors LLC — No change 125,000 $51K Aristeia Capital, L.L.C. — No change 125,000 $45K Verition Fund Management LLC — Reduce -31.4% 100,000 $39K Centiva Capital, LP — No change 75,000 $29K Mizuho Securities USA LLC — — 85,197 $26K Parallax Volatility Advisers, L.P. — Add +11.2% 55,590 $23K Gritstone Asset Management LLC — No change 50,000 $20K Hudson Bay Capital Management LP — Reduce -88.6% 39,994 $16K Toronto Dominion Bank — New 31,370 $13K Commonwealth of Pennsylvania Public School Empls Retrmt SYS — New 22,557 $9K Wolverine Asset Management LLC — Reduce -57.4% 5,521 $2K UBS Group AG — Add +74.8% 874 $355
"% of holder's portfolio" is ATIIW's weight in each manager's 13F, not the share of Archimedes Tech-30 the manager owns.