Archimedes Tech SPAC Partners II Co. Ordinary Shares(ATII)

$10.86—

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Archimedes Tech SPAC Partners II Co. Ordinary Shares(ATII)

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$10.86—

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ATII(ATII)

ATII

Overview Notebook Intelligence Chart History Fundmntls TTM Earnings Analysts News Financials Segments Insiders Institl.DCF Peers

Institutional Ownership

Top 56 Institutional Holders

Holder	Shares	Date	Change	% Held
TENOR CAPITAL MANAGEMENT Co., L.P.	1.50M	Mar 31, 26	--	5.07%
Magnetar Financial LLC	1.30M	Mar 31, 26	--	4.39%
D. E. Shaw & Co., Inc.	1.14M	Mar 31, 26	--	3.85%
LINDEN ADVISORS LP	1.00M	Mar 31, 26	--	3.38%
AQR Arbitrage LLC	920.67K	Mar 31, 26	-43.71K	3.11%
Westchester Capital Management, LLC	907.14K	Mar 31, 26	--	3.07%
LMR Partners LLP	850.00K	Mar 31, 26	--	2.87%
Ghisallo Capital Management LLC	800.00K	Mar 31, 26	--	2.70%
Governors Lane LP	759.56K	Mar 31, 26	+939	2.57%
Alberta Investment Management Corp	750.00K	Mar 31, 26	--	2.53%
GLAZER CAPITAL, LLC	750.00K	Mar 31, 26	-114.30K	2.53%
TWO SIGMA INVESTMENTS, LP	725.00K	Mar 31, 26	--	2.45%
Hudson Bay Capital Management LP	700.00K	Mar 31, 26	--	2.37%
Radcliffe Capital Management, L.P.	661.34K	Mar 31, 26	+3.02K	2.24%
TORONTO DOMINION BANK	650.00K	Mar 31, 26	+500.00K	2.20%
Sculptor Capital LP	600.65K	Mar 31, 26	--	2.03%
PICTON MAHONEY ASSET MANAGEMENT	500.00K	Mar 31, 26	--	1.69%
Jain Global LLC	500.00K	Mar 31, 26	--	1.69%
MOORE CAPITAL MANAGEMENT, LP	450.00K	Mar 31, 26	--	1.52%
RIVERNORTH CAPITAL MANAGEMENT, LLC	427.50K	Mar 31, 26	-20.25K	1.44%
RLH Capital LLC	400.91K	Mar 31, 26	+400.91K	1.35%
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	400.00K	Mar 31, 26	--	1.35%
J. Goldman & Co LP	369.78K	Mar 31, 26	+369.78K	1.25%
PERISCOPE CAPITAL INC.	352.88K	Mar 31, 26	-95.22K	1.19%
GOLDMAN SACHS GROUP INC	327.45K	Mar 31, 26	+3.60K	1.11%
MILLENNIUM MANAGEMENT LLC	307.99K	Mar 31, 26	--	1.04%
Mint Tower Capital Management B.V.	300.00K	Mar 31, 26	--	1.01%
METEORA CAPITAL, LLC	295.61K	Mar 31, 26	-422.82K	1.00%
Centiva Capital, LP	285.51K	Mar 31, 26	--	0.96%
Quarry LP	285.00K	Mar 31, 26	+285.00K	0.96%
Shaolin Capital Management LLC	270.78K	Mar 31, 26	--	0.92%
ARISTEIA CAPITAL LLC	250.00K	Mar 31, 26	--	0.84%
WHITEBOX ADVISORS LLC	250.00K	Mar 31, 26	--	0.84%
Verition Fund Management LLC	231.47K	Mar 31, 26	--	0.78%
BERKLEY W R CORP	208.06K	Mar 31, 26	-20.14K	0.70%
Schonfeld Strategic Advisors LLC	173.51K	Mar 31, 26	--	0.59%
DLD Asset Management, LP	150.00K	Mar 31, 26	-50.00K	0.51%
READYSTATE ASSET MANAGEMENT LP	148.73K	Mar 31, 26	+1.20K	0.50%
WOLVERINE ASSET MANAGEMENT LLC	134.28K	Mar 31, 26	-221.07K	0.45%
MMCAP International Inc. SPC	125.00K	Mar 31, 26	--	0.42%
GRITSTONE ASSET MANAGEMENT LLC	99.08K	Mar 31, 26	--	0.33%
K2 PRINCIPAL FUND, L.P.	87.90K	Mar 31, 26	--	0.30%
Baird Financial Group, Inc.	78.50K	Mar 31, 26	--	0.27%
Clear Street Group Inc.	77.45K	Mar 31, 26	+73.26K	0.26%
CSS LLC/IL	57.14K	Mar 31, 26	--	0.19%
Virtu Financial LLC	53.69K	Mar 31, 26	+53.69K	0.18%
BNP PARIBAS ARBITRAGE, SNC	37.74K	Mar 31, 26	+37.74K	0.13%
MIZUHO SECURITIES USA LLC	19.47K	Mar 31, 26	-284.36K	0.07%
GEODE CAPITAL MANAGEMENT, LLC	11.10K	Mar 31, 26	+11.10K	0.04%
CITADEL ADVISORS LLC	10.38K	Mar 31, 26	+10.38K	0.04%
MORGAN STANLEY	62	Mar 31, 26	-68	0.00%
DRIEHAUS CAPITAL MANAGEMENT LLC	--	Mar 31, 26	-573.08K	--
StoneX Group Inc.	--	Mar 31, 26	-50.61K	--
Warberg Asset Management LLC	--	Mar 31, 26	-10.00K	--
UBS OCONNOR LLC	200.00K	Dec 31, 25	--	0.68%
CLEAR STREET LLC	37.53K	Jun 30, 25	+37.53K	0.13%

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Holder

Date

Change

% Held

TENOR CAPITAL MANAGEMENT Co., L.P.

1.50M

Mar 31, 26

5.07%

Magnetar Financial LLC

1.30M

Mar 31, 26

4.39%

D. E. Shaw & Co., Inc.

1.14M

Mar 31, 26

3.85%

LINDEN ADVISORS LP

1.00M

Mar 31, 26

3.38%

AQR Arbitrage LLC

920.67K

Mar 31, 26

-43.71K

3.11%

Westchester Capital Management, LLC

907.14K

Mar 31, 26

3.07%

LMR Partners LLP

850.00K

Mar 31, 26

2.87%

Ghisallo Capital Management LLC

800.00K

Mar 31, 26

2.70%

Governors Lane LP

759.56K

Mar 31, 26

+939

2.57%

Alberta Investment Management Corp

750.00K

Mar 31, 26

2.53%

GLAZER CAPITAL, LLC

750.00K

Mar 31, 26

-114.30K

2.53%

TWO SIGMA INVESTMENTS, LP

725.00K

Mar 31, 26

2.45%

Hudson Bay Capital Management LP

700.00K

Mar 31, 26

2.37%

Radcliffe Capital Management, L.P.

661.34K

Mar 31, 26

+3.02K

2.24%

TORONTO DOMINION BANK

650.00K

Mar 31, 26

+500.00K

2.20%

Sculptor Capital LP

600.65K

Mar 31, 26

2.03%

PICTON MAHONEY ASSET MANAGEMENT

500.00K

Mar 31, 26

1.69%

Jain Global LLC

500.00K

Mar 31, 26

1.69%

MOORE CAPITAL MANAGEMENT, LP

450.00K

Mar 31, 26

1.52%

RIVERNORTH CAPITAL MANAGEMENT, LLC

427.50K

Mar 31, 26

-20.25K

1.44%

RLH Capital LLC

400.91K

Mar 31, 26

+400.91K

1.35%

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS

400.00K

Mar 31, 26

1.35%

J. Goldman & Co LP

369.78K

Mar 31, 26

+369.78K

1.25%

PERISCOPE CAPITAL INC.

352.88K

Mar 31, 26

-95.22K

1.19%

GOLDMAN SACHS GROUP INC

327.45K

Mar 31, 26

+3.60K

1.11%

MILLENNIUM MANAGEMENT LLC

307.99K

Mar 31, 26

1.04%

Mint Tower Capital Management B.V.

300.00K

Mar 31, 26

1.01%

METEORA CAPITAL, LLC

295.61K

Mar 31, 26

-422.82K

1.00%

Centiva Capital, LP

285.51K

Mar 31, 26

0.96%

Quarry LP

285.00K

Mar 31, 26

+285.00K

0.96%

Shaolin Capital Management LLC

270.78K

Mar 31, 26

0.92%

ARISTEIA CAPITAL LLC

250.00K

Mar 31, 26

0.84%

WHITEBOX ADVISORS LLC

250.00K

Mar 31, 26

0.84%

Verition Fund Management LLC

231.47K

Mar 31, 26

0.78%

BERKLEY W R CORP

208.06K

Mar 31, 26

-20.14K

0.70%

Schonfeld Strategic Advisors LLC

173.51K

Mar 31, 26

0.59%

DLD Asset Management, LP

150.00K

Mar 31, 26

-50.00K

0.51%

READYSTATE ASSET MANAGEMENT LP

148.73K

Mar 31, 26

+1.20K

0.50%

WOLVERINE ASSET MANAGEMENT LLC

134.28K

Mar 31, 26

-221.07K

0.45%

MMCAP International Inc. SPC

125.00K

Mar 31, 26

0.42%

GRITSTONE ASSET MANAGEMENT LLC

99.08K

Mar 31, 26

0.33%

K2 PRINCIPAL FUND, L.P.

87.90K

Mar 31, 26

0.30%

Baird Financial Group, Inc.

78.50K

Mar 31, 26

0.27%

Clear Street Group Inc.

77.45K

Mar 31, 26

+73.26K

0.26%

CSS LLC/IL

57.14K

Mar 31, 26

0.19%

Virtu Financial LLC

53.69K

Mar 31, 26

+53.69K

0.18%

BNP PARIBAS ARBITRAGE, SNC

37.74K

Mar 31, 26

+37.74K

0.13%

MIZUHO SECURITIES USA LLC

19.47K

Mar 31, 26

-284.36K

0.07%

GEODE CAPITAL MANAGEMENT, LLC

11.10K

Mar 31, 26

+11.10K

0.04%

CITADEL ADVISORS LLC

10.38K

Mar 31, 26

+10.38K

0.04%

MORGAN STANLEY

Mar 31, 26

-68

0.00%

DRIEHAUS CAPITAL MANAGEMENT LLC

Mar 31, 26

-573.08K

StoneX Group Inc.

Mar 31, 26

-50.61K

Warberg Asset Management LLC

Mar 31, 26

-10.00K

UBS OCONNOR LLC

200.00K

Dec 31, 25

0.68%

CLEAR STREET LLC

37.53K

Jun 30, 25

+37.53K

0.13%