Archimedes Tech Spac PartnerATIIU 13F holders, Q1 2025 (March 31) 44 holders
2 famous investors
$10.08 avg. 13F price*
At the end of Q1 2025 , 44 institutions reported holding Archimedes Tech Spac Partner (ATIIU) in their 13F filings. The largest holders were TENOR CAPITAL MANAGEMENT Co., L.P. ($15.2M), AQR Arbitrage LLC ($13.1M) and Magnetar Financial LLC ($13.1M). 2 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
Company Archimedes Tech Spac Partner
CUSIP G04537117
Latest filing quarter Q2 2026 History Number of 13F holders
Total Exit/New Position Q1 2025 Institutions Total Value New Positions 44 $194.1M Exits 0 $0
Ownership 44 holders Portfolio Manager % of Holder's Portfolio Change Shares Value ▼ TENOR CAPITAL MANAGEMENT Co., L.P. 4.46% New 1,500,000 $15.2M AQR Arbitrage LLC 0.57% New 1,303,242 $13.1M Magnetar Financial LLC 0.19% New 1,300,000 $13.1M Healthcare of Ontario Pension Plan Trust Fund 0.02% New 1,000,000 $10.1M Linden Advisors LP 2.21% New 1,000,000 $10.1M LMR Partners LLP 0.24% New 850,000 $8.6M Glazer Capital, LLC 0.43% New 839,370 $8.5M CSS LLC 1.66% New 820,803 $8.3M Ghisallo Capital Management LLC 0.72% New 800,000 $8.1M Two Sigma Investments, LP 0.02% New 725,000 $7.3M Hudson Bay Capital Management LP 0.05% New 700,000 $7.1M Shaolin Capital Management LLC 2.30% New 650,531 $6.6M Mizuho Securities USA LLC 0.13% New 600,000 $6.0M D. E. Shaw & Co. 0.01% New 575,000 $5.8M JPMorgan Chase & Co. 0.00% New 543,595 $5.5M Millennium Management 0.01% New 500,000 $5.0M Moore Capital Management, LP 0.18% New 450,000 $4.5M Rivernorth Capital Management, LLC 0.24% New 450,000 $4.5M Westchester Capital Management, LLC 0.24% New 400,000 $4.0M Schonfeld Strategic Advisors LLC 0.02% New 350,000 $3.5M K2 Principal Fund, L.P. 1.83% New 319,790 $3.2M Periscope Capital Inc. 1.90% New 300,000 $3.0M Mint Tower Capital Management B.V. 2.31% New 300,000 $3.0M Verition Fund Management LLC 0.02% New 291,500 $2.9M Aristeia Capital, L.L.C. 0.16% New 250,000 $2.5M Picton Mahoney Asset Management 0.09% New 250,000 $2.5M Crossingbridge Advisors, LLC 2.25% New 250,000 $2.5M Whitebox Advisors LLC 0.21% New 250,000 $2.5M Berkley W R Corp. 0.17% New 228,206 $2.3M Boothbay Fund Management, LLC 0.08% New 218,600 $2.2M Atw Spac Management LLC 3.84% New 218,600 $2.2M Clear Street LLC 0.03% New 166,517 $1.7M Centiva Capital, LP 0.09% New 150,000 $1.5M DLD Asset Management, LP 1.30% New 150,000 $1.5M MMCAP International Inc. SPC 0.22% New 125,000 $1.3M Parallax Volatility Advisers, L.P. 0.04% New 100,000 $1.0M Gritstone Asset Management LLC 1.08% New 100,000 $1.0M Wealthspring Capital LLC 1.21% New 77,376 $780K Jane Street Group, LLC 0.00% New 65,110 $657K Wolverine Asset Management LLC 0.02% New 25,900 $261K Highbridge Capital Management LLC 0.04% New 25,000 $253K Tuttle Capital Management, LLC 0.88% New 20,000 $201K Warberg Asset Management LLC 0.43% New 10,000 $101K UBS Group AG 0.00% New 1,000 $10K
"% of holder's portfolio" is ATIIU's weight in each manager's 13F, not the share of Archimedes Tech Spac Partner the manager owns.