ARCI — Archimedes Tech Spac Ptnrs I Institutional Holders · Q2 2026

Name: Who Owns ARCI? 56 Institutions Hold $203M (Q2 2026)
Creator: ko.io

Who owns Archimedes Tech Spac Ptnrs I (ARCI)? 56 institutions reported holding $202.64M in SEC 13F filings for Q2 2026 (period ended 2026-06-30). Largest holders: Adage Capital Partners Gp, L.L.C. ($18.0M), Linden Advisors LP ($12.0M), Magnetar Financial LLC ($12.0M).

Rank	Institution	Value	Shares	Change
1	ADAGE CAPITAL PARTNERS GP, L.L.C.	$18.0M	1.8M	Hold
2	Linden Advisors LP	$12.0M	1.2M	Hold
3	Magnetar Financial LLC	$12.0M	1.2M	Hold
4	Governors Lane LP	$11.5M	1.1M	Added
5	TENOR CAPITAL MANAGEMENT Co., L.P.	$10.0M	1.0M	Hold
6	Alberta Investment Management Corp	$10.0M	1.0M	New
7	Verition Fund Management LLC	$8.2M	815,355	Added
8	SONA ASSET MANAGEMENT (US) LLC	$8.0M	800,000	Hold
9	AQR Arbitrage LLC	$7.6M	757,612	New
10	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	$5.5M	550,000	Hold
11	Shaolin Capital Management LLC	$5.1M	510,386	Trimmed
12	RIVERNORTH CAPITAL MANAGEMENT, LLC	$5.1M	500,000	New
13	Radcliffe Capital Management, L.P.	$5.1M	504,673	Added
14	Polar Asset Management Partners Inc.	$5.0M	500,000	Hold
15	MOORE CAPITAL MANAGEMENT, LP	$5.0M	500,000	Hold
16	GLAZER CAPITAL, LLC	$5.0M	496,809	Trimmed
17	BNP PARIBAS FINANCIAL MARKETS	$4.9M	492,372	New
18	D. E. Shaw & Co., Inc.	$4.5M	450,500	Added
19	METEORA CAPITAL, LLC	$4.2M	424,489	Trimmed
20	Periscope Capital Inc.	$4.1M	409,001	Hold
21	COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	$4.0M	400,000	New
22	K2 PRINCIPAL FUND, L.P.	$3.1M	308,333	Added
23	MMCAP International Inc. SPC	$3.0M	300,000	New
24	Hudson Bay Capital Management LP	$3.0M	300,000	Hold
25	Schonfeld Strategic Advisors LLC	$3.0M	297,404	New

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