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Disclosery

ARCI ARCHIMEDES TECH SPAC PTNRS I

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ORD SHS (common), issuer CIK 2083910

52 managers (52 13F filers) reported a position in ARCI shares at 2026-06-30, 20,236,815 shares in all. 16 filers opened a position and 4 filers sold out during the quarter.

Managers
52
13F filers
52
New
16
Added
9
Reduced
4
Sold out
4
Shares held by filers
20,236,815

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…1,800,000$18M0.03%013F-HRTimelineGroup
Linden Advisors LPin group Linden Advisors LP1,200,000$12M0.06%013F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC1,200,000$12M0.11%013F-HRTimelineGroup
Governors Lane LP1,146,610$11.5M1.15%+146,61013F-HRTimeline
TENOR CAPITAL MANAGEMENT Co., L.P.1,000,000$10M0.14%013F-HRTimeline
Alberta Investment Management Corp1,000,000$10M0.06%new13F-HRTimeline
Verition Fund Management LLC815,355$8.16M0.06%+65,35513F-HR/ATimeline
SONA ASSET MANAGEMENT (US) LLCin group SONA ASSET MANAGEMENT (US) LLC800,000$8.01M0.3%013F-HRTimelineGroup
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC757,612$7.58M0.11%new13F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…550,000$5.51M0.01%013F-HRTimeline
Shaolin Capital Management LLC510,386$5.11M0.29%-30,06813F-HRTimeline
RIVERNORTH CAPITAL MANAGEMENT, LLC500,000$5.08M0.24%new13F-HRTimeline
Radcliffe Capital Management, L.P.504,673$5.05M0.38%+90,37613F-HRTimeline
Polar Asset Management Partners Inc.500,000$5M0.09%013F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP500,000$5M0.11%013F-HRTimeline
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC496,809$4.97M0.12%-7,79313F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS492,372$4.93M<0.01%new13F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.450,500$4.51M<0.01%+25,50013F-HRTimelineGroup
Meteora Capital, LLC424,489$4.25M0.35%-59,25113F-HRTimeline
Periscope Capital Inc.409,001$4.09M0.65%013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…400,000$4M0.02%new13F-HRTimeline
K2 PRINCIPAL FUND, L.P.308,333$3.09M0.28%+8,79713F-HRTimeline
MMCAP International Inc. SPCin group MMCAP300,000$3M0.25%new13F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…300,000$3M0.01%013F-HRTimelineGroup
Schonfeld Strategic Advisors LLC297,404$2.98M0.02%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP273,791$2.74M<0.01%013F-HRTimelineGroup
HBK INVESTMENTS L P250,004$2.5M0.03%013F-HRTimeline
Ghisallo Capital Management LLC250,000$2.5M0.05%013F-HRTimeline
BERKLEY W R CORP248,000$2.48M0.12%013F-HRTimeline
683 Capital Management, LLCin group 683 Capital Management, LLC200,000$2M0.18%013F-HRTimelineGroup
MANGROVE PARTNERS IM, LLC200,000$2M0.13%new13F-HRTimeline
First Trust Capital Management L.P.200,000$2M0.12%013F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK175,916$1.76M<0.01%+80,51813F-HRTimelineGroup
DLD Asset Management, LP170,000$1.7M0.14%013F-HRTimeline
Wealthspring Capital LLC160,960$1.61M0.36%new13F-HRTimeline
Mint Tower Capital Management B.V.150,000$1.5M0.18%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC150,000$1.5M<0.01%new13F-HRTimelineGroup
PICTON MAHONEY ASSET MANAGEMENT149,996$1.5M0.01%new13F-HRTimeline
StoneX Group Inc.in group StoneX Group Inc.150,309$1.5M0.06%+40,56413F-HRTimelineGroup
Clear Street Group Inc.in group Clear Street Group Inc.147,610$1.48M<0.01%-93,15313F-HRTimelineGroup
WHITEBOX ADVISORS LLC100,000$1M0.02%013F-HRTimeline
Context Capital Management, LLC100,000$1M0.02%013F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC95,000$951K0.02%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO87,664$877K<0.01%013F-HRTimelineGroup
L1 Global Manager Pty Ltd75,000$751K0.61%013F-HRTimeline
Centiva Capital, LP70,050$701K0.02%new13F-HRTimeline
Bulldog Investors, LLP64,500$646K0.14%new13F-HRTimeline
DELTEC ASSET MANAGEMENT LLC35,000$350K0.05%013F-HRTimeline
ABC ARBITRAGE SAin group ABC ARBITRAGE SA35,000$350K0.04%new13F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC32,947$330K<0.01%+22,86013F-HRTimelineGroup
Arax Advisory Partners1,500$15K<0.01%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY24$240<0.01%+713F-HRTimelineGroup