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ARCIW ARCHIMEDES TECH SPAC PTNRS I

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*W EXP 01/23/203 (warrant or right), issuer CIK 2083910

29 managers (29 13F filers) reported a position in ARCIW shares at 2026-03-31, 3,564,839 shares in all. 29 filers opened a position and 0 filers sold out during the quarter.

Managers
29
13F filers
29
New
29
Added
0
Reduced
0
Sold out
0
Shares held by filers
3,564,839

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Mint Tower Capital Management B.V.37,500$369K0.03%new13F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…375,000$201K<0.01%new13F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC300,000$165K<0.01%new13F-HRTimelineGroup
Linden Advisors LPin group Linden Advisors LP299,999$160K<0.01%new13F-HRTimelineGroup
K2 PRINCIPAL FUND, L.P.281,777$152K0.02%new13F-HRTimeline
TENOR CAPITAL MANAGEMENT Co., L.P.250,000$134K<0.01%new13F-HRTimeline
Governors Lane LP250,000$134K0.02%new13F-HRTimeline
SONA ASSET MANAGEMENT (US) LLCin group SONA ASSET MANAGEMENT (US) LLC200,000$107K<0.01%new13F-HRTimelineGroup
Verition Fund Management LLC187,500$103K<0.01%new13F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…137,500$75.6K<0.01%new13F-HRTimeline
Polar Asset Management Partners Inc.125,000$66.9K<0.01%new13F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP125,000$66.9K<0.01%new13F-HRTimeline
Meteora Capital, LLC123,720$66.2K<0.01%new13F-HRTimeline
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC118,814$64K<0.01%new13F-HRTimelineGroup
Shaolin Capital Management LLC110,111$58.9K<0.01%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.106,250$58.4K<0.01%new13F-HRTimelineGroup
Periscope Capital Inc.101,100$54.1K0.01%new13F-HRTimeline
Radcliffe Capital Management, L.P.81,342$43.5K<0.01%new13F-HRTimeline
HBK INVESTMENTS L P62,501$33.4K<0.01%new13F-HRTimeline
Clear Street Group Inc.in group Clear Street Group Inc.58,300$31.2K<0.01%new13F-HRTimelineGroup
683 Capital Management, LLCin group 683 Capital Management, LLC50,000$26.8K<0.01%new13F-HRTimelineGroup
DLD Asset Management, LP42,499$22.7K<0.01%new13F-HRTimeline
Alpine Global Management, LLC37,500$20.1K<0.01%new13F-HRTimeline
WHITEBOX ADVISORS LLC25,000$13.4K<0.01%new13F-HRTimeline
Context Capital Management, LLC25,000$13.4K<0.01%new13F-HRTimeline
L1 Global Manager Pty Ltd18,750$10K0.01%new13F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC19,000$10K<0.01%new13F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…15,001$8.25K<0.01%new13F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA675$00%new13F-HRTimelineGroupValue filed as zero, left out of ratios.