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ATII

Archimedes Tech SPAC Partners II Co
ATII

42 hedge funds and large institutions have $216M invested in Archimedes Tech SPAC Partners II Co in 2025 Q2 according to their latest regulatory filings, with 42 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

71.39% more ownership

Funds ownership: 0% → 71.39% (+71%)

Holders
42
Holders Change
+42
Holders Change %
–
% of All Funds
0.55%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.01%
New
42
Increased
–
Reduced
–
Closed
–
Calls
$30K
Puts
–
Net Calls
+$30K
Net Calls Change
+$30K

Top Buyers

Rank Fund Capital Flow
1
TCM
Tenor Capital Management
New York
+$15.1M
2
MF
Magnetar Financial
Illinois
+$13.1M
3
SC
Sculptor Capital
New York
+$13.1M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$11.5M
5
LA
Linden Advisors
New York
+$10.1M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
SSA
26
Schonfeld Strategic Advisors
New York
$3.27M +$3.23M +320,000 New
DAM
27
DLD Asset Management
New York
$3.07M +$3.02M +300,000 New
MTCM
28
Mint Tower Capital Management
Netherlands
$3.07M +$3.02M +300,000 New
CC
29
Centiva Capital
New York
$2.92M +$2.88M +285,515 New
Verition Fund Management
30
Verition Fund Management
Connecticut
$2.57M +$2.53M +251,475 New
AC
31
Aristeia Capital
Connecticut
$2.56M +$2.52M +250,000 New
WA
32
Whitebox Advisors
Minnesota
$2.56M +$2.52M +250,000 New
WRBC
33
W.R. Berkley Corp
Connecticut
$2.33M +$2.3M +228,206 New
SCM
34
Shaolin Capital Management
Florida
$2.05M +$2.02M +200,000 New
UOC
35
UBS O'Connor
Illinois
$2.05M +$2.02M +200,000 New
KPF
36
K2 Principal Fund
Ontario, Canada
$1.64M +$1.61M +160,170 New
GAM
37
Gritstone Asset Management
Maryland
$1.02M +$1.01M +100,000 New
CL
38
CSS LLC
Illinois
$512K +$504K +50,000 New
CS
39
Clear Street
New York
$384K +$378K +37,534 New
WAM
40
Wolverine Asset Management
Illinois
$155K +$153K +15,141 New
WAM
41
Warberg Asset Management
Illinois
$102K +$101K +10,000 New
Morgan Stanley
42
Morgan Stanley
New York
$1.24K +$1.22K +121 New
1
2

ATII Hedge Fund Activity: Q2 2025 in Review

42 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Archimedes Tech SPAC Partners II Co (ATII) for Q2 2025, worth a combined $216M.

Buyers outnumbered sellers: 42 funds opened new ATII positions and 0 closed out — a net gain of 42 holders — while 0 added to existing stakes and 0 trimmed.

The largest buyer was Tenor Capital Management, opening a new position worth an estimated $15.1M.

  • 42 institutional investors held Archimedes Tech SPAC Partners II Co (ATII) as of Q2 2025, up from 0 in Q1 2025.
  • Funds reported $216M of Archimedes Tech SPAC Partners II Co stock for Q2 2025.
  • 42 funds opened new Archimedes Tech SPAC Partners II Co positions in Q2 2025 and 0 closed out, a net change of +42 holders.
  • The largest Archimedes Tech SPAC Partners II Co buyer in Q2 2025 was Tenor Capital Management, an estimated $15.1M added.

Based on aggregated 13F filings for Q2 2025.