Who Owns ARCHIMEDES TECH SPAC PTNRS I (ARCI)? -- Institutional Holders (2026-06-30)

56 institutions reported holding $202.6M of ARCHIMEDES TECH SPAC PTNRS I (ARCI) in SEC 13F filings for 2026-06-30. Largest institutional holders: ADAGE CAPITAL PARTNERS GP, L.L.C. ($18.0M), Linden Advisors LP ($12.0M), Magnetar Financial LLC ($12.0M), Governors Lane LP ($11.5M), Alberta Investment Management Corp ($10.0M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1ADAGE CAPITAL PARTNERS GP, L.L.C.$18.0M1.8MHold
2Linden Advisors LP$12.0M1.2MHold
3Magnetar Financial LLC$12.0M1.2MHold
4Governors Lane LP$11.5M1.1MAdded
5Alberta Investment Management Corp$10.0M1.0MNew
6TENOR CAPITAL MANAGEMENT Co., L.P.$10.0M1.0MHold
7Verition Fund Management LLC$8.2M815,355Added
8SONA ASSET MANAGEMENT (US) LLC$8.0M800,000Hold
9AQR Arbitrage LLC$7.6M757,612New
10HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$5.5M550,000Hold
11Shaolin Capital Management LLC$5.1M510,386Trimmed
12RIVERNORTH CAPITAL MANAGEMENT, LLC$5.1M500,000New
13Radcliffe Capital Management, L.P.$5.1M504,673Added
14Polar Asset Management Partners Inc.$5.0M500,000Hold
15MOORE CAPITAL MANAGEMENT, LP$5.0M500,000Hold
16GLAZER CAPITAL, LLC$5.0M496,809Trimmed
17BNP PARIBAS FINANCIAL MARKETS$4.9M492,372New
18D. E. Shaw & Co., Inc.$4.5M450,500Added
19METEORA CAPITAL, LLC$4.2M424,489Trimmed
20Periscope Capital Inc.$4.1M409,001Hold
21COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS$4.0M400,000New
22K2 PRINCIPAL FUND, L.P.$3.1M308,333Added
23MMCAP International Inc. SPC$3.0M300,000New
24Hudson Bay Capital Management LP$3.0M300,000Hold
25Schonfeld Strategic Advisors LLC$3.0M297,404New

Source: SEC Form 13F filings · as of 2026-06-30