We are live on ! Find out more
ATII

Archimedes Tech SPAC Partners II Co
ATII

49 hedge funds and large institutions have $230M invested in Archimedes Tech SPAC Partners II Co in 2025 Q4 according to their latest regulatory filings, with 3 funds opening new positions, 11 increasing their positions, 9 reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

22% more repeat investments, than reductions

Existing positions increased: 11 | Existing positions reduced: 9

7% more funds holding

Funds holding: 46 → 49 (+3)

2% more capital invested

Capital invested by funds: $225M → $230M (+$5.47M)

100% less funds holding in top 10

Funds holding in top 10: 1 → 0 (-1)

Holders
49
Holders Change
+3
Holders Change %
+6.52%
% of All Funds
0.6%
Holding in Top 10
–
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-100%
% of All Funds
–
New
3
Increased
11
Reduced
9
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
RCM
Rivernorth Capital Management
Florida
+$933K
2
Baird Financial Group
Baird Financial Group
Wisconsin
+$813K
3
SCM
Shaolin Capital Management
Florida
+$734K
4
MC
Meteora Capital
Florida
+$710K
5
SG
StoneX Group
New York
+$524K

Top Sellers

Rank Fund Capital Flow
1
SC
Sculptor Capital
New York
-$1.44M
2
WAM
Wolverine Asset Management
Illinois
-$1.05M
3
PC
Periscope Capital
Ontario, Canada
-$538K
4
SSA
Schonfeld Strategic Advisors
New York
-$499K
5
MSU
Mizuho Securities USA
New York
-$324K
Name Holding Trade Value Shares
Change 		Change in
Stake
Millennium Management
26
Millennium Management
New York
$3.19M +$41.7K +4,020 +1%
MSU
27
Mizuho Securities USA
New York
$3.11M -$324K -31,271 -9%
MTCM
28
Mint Tower Capital Management
Netherlands
$3.11M – – –
CC
29
Centiva Capital
New York
$2.96M – – –
SCM
30
Shaolin Capital Management
Florida
$2.81M +$734K +70,783 +35%
AC
31
Aristeia Capital
Connecticut
$2.59M – – –
WA
32
Whitebox Advisors
Minnesota
$2.59M – – –
Verition Fund Management
33
Verition Fund Management
Connecticut
$2.4M -$207K -20,000 -8%
WRBC
34
W.R. Berkley Corp
Connecticut
$2.36M – – –
UOC
35
UBS O'Connor
Illinois
$2.07M – – –
DAM
36
DLD Asset Management
New York
$2.07M +$518K +50,000 +33%
LGM
37
L1 Global Manager
$2.07M +$2.07M +200,000 New
SSA
38
Schonfeld Strategic Advisors
New York
$1.8M -$499K -48,150 -22%
Toronto Dominion Bank
39
Toronto Dominion Bank
Ontario, Canada
$1.55M +$21 +2 +0%
RAM
40
Readystate Asset Management
Illinois
$1.53M – – –
MI
41
MMCAP International
Cayman Islands
$1.29M – – –
GAM
42
Gritstone Asset Management
Maryland
$1.03M – – –
KPF
43
K2 Principal Fund
Ontario, Canada
$911K -$267K -25,770 -23%
Baird Financial Group
44
Baird Financial Group
Wisconsin
$813K +$813K +78,500 New
CL
45
CSS LLC
Illinois
$592K +$74K +7,143 +14%
SG
46
StoneX Group
New York
$524K +$524K +50,613 New
WAM
47
Warberg Asset Management
Illinois
$104K – – –
CS
48
Clear Street
New York
$43.5K -$259K -25,000 -86%
Morgan Stanley
49
Morgan Stanley
New York
$1.35K +$819 +79 +155%
1
2

ATII Hedge Fund Activity: Q4 2025 in Review

49 of the 8,226 institutional investors tracked by Wall St. Rank reported a position in Archimedes Tech SPAC Partners II Co (ATII) for Q4 2025, worth a combined $230M — up 2.4% from $225M a quarter earlier.

Buyers outnumbered sellers: 3 funds opened new ATII positions and 0 closed out — a net gain of 3 holders — while 11 added to existing stakes and 9 trimmed.

The largest buyer was Rivernorth Capital Management, adding an estimated $933K. The largest seller was Sculptor Capital, cutting an estimated $1.44M.

  • 49 institutional investors held Archimedes Tech SPAC Partners II Co (ATII) as of Q4 2025, up from 46 in Q3 2025.
  • Funds reported $230M of Archimedes Tech SPAC Partners II Co stock for Q4 2025, up 2.4% quarter-over-quarter.
  • 3 funds opened new Archimedes Tech SPAC Partners II Co positions in Q4 2025 and 0 closed out, a net change of +3 holders.
  • The largest Archimedes Tech SPAC Partners II Co buyer in Q4 2025 was Rivernorth Capital Management, an estimated $933K added.
  • The largest Archimedes Tech SPAC Partners II Co seller in Q4 2025 was Sculptor Capital, an estimated $1.44M sold.

Based on aggregated 13F filings for Q4 2025.