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Disclosery

ATII ARCHIMEDES TECH SPAC PARTNER

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ORD SHS (common), issuer CIK 2028516

49 managers (49 13F filers) reported a position in ATII shares at 2026-06-30, 17,404,880 shares in all. 12 filers opened a position and 17 filers sold out during the quarter.

Managers
49
13F filers
49
New
12
Added
3
Reduced
23
Sold out
17
Shares held by filers
17,404,880

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
TENOR CAPITAL MANAGEMENT Co., L.P.1,367,830$14.7M0.21%-132,17013F-HRTimeline
Fort Baker Capital Management LP1,330,746$14.3M1.14%new13F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC1,297,302$14M0.13%-2,69813F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,138,500$12.3M0.01%013F-HRTimelineGroup
Decagon Asset Management LLP937,829$10.1M2.02%new13F-HRTimeline
Linden Advisors LPin group Linden Advisors LP848,273$9.14M0.05%-151,72713F-HRTimelineGroup
Ghisallo Capital Management LLC800,000$8.62M0.17%013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP725,000$7.82M0.01%013F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…700,000$7.55M0.04%013F-HRTimelineGroup
Shay Capital LLC623,687$6.72M0.74%new13F-HRTimeline
Governors Lane LP604,857$6.52M0.65%-154,69913F-HRTimeline
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC590,262$6.36M0.09%-330,41013F-HRTimelineGroup
Sculptor Capital LPin group Sculptor Capital LP552,619$5.96M0.06%-48,02713F-HRTimelineGroup
K2 PRINCIPAL FUND, L.P.526,227$5.67M0.52%+438,32713F-HRTimeline
LMR Partners LLPin group LMR Partners LLP478,978$5.16M0.04%-371,02213F-HRTimelineGroup
Radcliffe Capital Management, L.P.478,061$5.15M0.39%-183,27613F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP450,000$4.85M0.11%013F-HRTimeline
Alberta Investment Management Corp400,000$4.31M0.02%-350,00013F-HRTimeline
FNY Investment Advisers, LLC327,200$3.53M1.28%new13F-HRTimeline
Mint Tower Capital Management B.V.300,000$3.23M0.38%013F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC250,266$2.7M<0.01%+239,88913F-HRTimelineGroup
WHITEBOX ADVISORS LLC250,000$2.69M0.04%013F-HRTimeline
Harraden Circle Investments, LLC234,661$2.53M0.32%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC205,090$2.21M<0.01%-122,36013F-HRTimelineGroup
ARISTEIA CAPITAL, L.L.C.200,000$2.16M0.03%-50,00013F-HRTimeline
L1 Global Manager Pty Ltd200,000$2.16M1.75%013F-HRTimeline
DLD Asset Management, LP195,453$2.11M0.17%+45,45313F-HRTimeline
Jain Global LLC185,108$2M0.02%-314,89213F-HRTimeline
Periscope Capital Inc.175,000$1.89M0.3%-177,88013F-HRTimeline
Verition Fund Management LLC140,797$1.52M0.01%-90,67313F-HR/ATimeline
MMCAP International Inc. SPCin group MMCAP125,000$1.35M0.11%013F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL123,842$1.34M0.01%new13F-HRTimeline
CANTOR FITZGERALD, L. P.in group CANTOR FITZGERALD, L. P.88,283$952K0.02%new13F-HR/ATimelineGroup
TORONTO DOMINION BANKin group TORONTO DOMINION BANK82,550$890K<0.01%-567,45013F-HRTimelineGroup
Baird Financial Group, Inc.in group Baird Financial Group, Inc.78,500$846K<0.01%013F-HRTimelineGroup
Shaolin Capital Management LLC76,171$821K0.05%-194,61213F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC69,384$748K<0.01%-238,60113F-HRTimelineGroup
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC50,100$540K0.01%-699,90013F-HRTimelineGroup
Schonfeld Strategic Advisors LLC50,000$539K<0.01%-123,51513F-HRTimeline
HRT FINANCIAL LP47,190$508K<0.01%new13F-HRTimeline
Clear Street Group Inc.in group Clear Street Group Inc.25,000$270K<0.01%-52,45213F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS23,790$256K<0.01%-13,95413F-HRTimelineGroup
HIGHBRIDGE CAPITAL MANAGEMENT LLC17,497$189K0.01%new13F-HRTimeline
READYSTATE ASSET MANAGEMENT LP12,528$135K0.01%-136,20613F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC11,102$120K<0.01%013F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…8,500$91.6K<0.01%new13F-HRTimelineGroup
UBS Group AGin group UBS Group AG1,658$17.9K<0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY35$377<0.01%-2713F-HRTimelineGroup
Caitong International Asset Management …4$43<0.01%new13F-HRTimeline