Archimedes Tech SPAC Partners II Co.

ATIINASDAQ

$10.70+0.02 (+0.19%)as of Oct 5, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

Archimedes Tech SPAC Partners II Co. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+4.8%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
TENOR CAPITAL MANAGEMENT Co., L.P.	20.76%	$14.7M	0.21%	Reduce 8.81%
Fort Baker Capital Management LP	20.19%	$14.3M	1.05%	New Not reported
Magnetar Financial LLC	19.69%	$14M	0.13%	Not reported
D. E. Shaw & Co., Inc.	17.28%	$12.3M	0.01%	Not reported
Decagon Asset Management LLP	14.23%	$10.1M	1.93%	New Not reported
Linden Advisors LP	12.87%	$9.14M	0.05%	Not reported
Ghisallo Capital Management LLC	12.14%	$8.62M	0.17%	Not reported
Two Sigma Investments, LP	11.00%	$7.82M	0.01%	Not reported
Hudson Bay Capital Management LP	10.62%	$7.55M	0.02%	Not reported
Shay Capital LLC	9.46%	$6.72M	0.43%	Not reported
Governors Lane LP	9.18%	$6.52M	0.54%	Reduce 20.37%
AQR Arbitrage LLC	8.96%	$6.36M	0.09%	Not reported
Sculptor Capital LP	8.39%	$5.96M	0.05%	Not reported
K2 Principal Fund, L.P.	7.99%	$5.67M	0.42%	Add 498.67%
Radcliffe Capital Management, L.P.	7.25%	$5.15M	0.39%	Not reported
Moore Capital Management, LP	6.83%	$4.85M	0.07%	Not reported
Alberta Investment Management Corp	6.07%	$4.31M	0.02%	Not reported
FNY Investment Advisers, LLC	4.97%	$3.53M	1.27%	Not reported
Mint Tower Capital Management B.V.	4.55%	$3.23M	0.37%	Not reported
Citadel Advisors LLC	3.80%	$2.7M	0.00%	Not reported
Whitebox Advisors LLC	3.79%	$2.7M	0.04%	Not reported
Harraden Circle Investments, LLC	3.56%	$2.53M	0.32%	New Not reported
Goldman Sachs Group Inc	3.11%	$2.21M	0.00%	Not reported
Aristeia Capital, L.L.C.	3.03%	$2.16M	0.03%	Reduce 20.00%
L1 Global Manager Pty Ltd	3.03%	$2.16M	1.52%	Not reported
DLD Asset Management, LP	2.97%	$2.11M	0.14%	Add 30.30%
Jain Global LLC	2.81%	$2M	0.01%	Reduce 62.98%
Cantor Fitzgerald, L. P.	2.68%	$1.9M	0.01%	Not reported
Periscope Capital Inc.	2.66%	$1.89M	0.17%	Not reported
Verition Fund Management LLC	2.14%	$1.52M	0.01%	Not reported
MMCAP International Inc. SPC	1.90%	$1.35M	0.11%	Not reported
Tudor Investment Corp Et Al	1.88%	$1.34M	0.00%	Not reported
Toronto Dominion Bank	1.25%	$890K	0.00%	Not reported
Baird Financial Group, Inc.	1.19%	$846K	0.00%	Not reported
Shaolin Capital Management LLC	1.16%	$821K	0.04%	Not reported
Millennium Management LLC	1.05%	$748K	0.00%	Not reported
Glazer Capital, LLC	0.76%	$540K	0.01%	Not reported
Schonfeld Strategic Advisors LLC	0.76%	$539K	0.00%	Not reported
Clear Street Group Inc.	0.38%	$270K	0.00%	Not reported
BNP Paribas Financial Markets	0.36%	$256K	0.00%	Not reported
Mizuho Securities USA LLC	0.30%	$202K	0.00%	Not reported
Highbridge Capital Management LLC	0.27%	$189K	0.00%	New Not reported
Readystate Asset Management LP	0.19%	$135K	0.00%	Reduce 91.58%
Geode Capital Management, LLC	0.17%	$120K	0.00%	Not reported
EverSource Wealth Advisors, LLC	0.13%	$91.6K	0.00%	Not reported
UBS Group AG	0.03%	$17.9K	0.00%	Not reported
Morgan Stanley	0.00%	$377	0.00%	Not reported
Caitong International Asset Management Co., Ltd	0.00%	$43	0.00%	Not reported

End of history · 48 holders

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