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ATIIU

Archimedes Tech SPAC Partners II Co Unit
ATIIU

9 hedge funds and large institutions have $13.4M invested in Archimedes Tech SPAC Partners II Co Unit in 2025 Q2 according to their latest regulatory filings, with 1 funds opening new positions, 1 increasing their positions, 3 reducing their positions, and 36 closing their positions.

New
Increased
Maintained
Reduced
Closed

67% less repeat investments, than reductions

Existing positions increased: 1 | Existing positions reduced: 3

77.42% less ownership

Funds ownership: 83.7% → 6.28% (-77%)

80% less funds holding

Funds holding: 44 → 9 (-35)

93% less capital invested

Capital invested by funds: $194M → $13.4M (-$181M)

97% less first-time investments, than exits

New positions opened: 1 | Existing positions closed: 36

Holders
9
Holders Change
-35
Holders Change %
-79.55%
% of All Funds
0.12%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
1
Increased
1
Reduced
3
Closed
36
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
UBS Group
UBS Group
Switzerland
+$32K
2
Toronto Dominion Bank
Toronto Dominion Bank
Ontario, Canada
+$10

Top Sellers

Rank Fund Capital Flow
1
TCM
Tenor Capital Management
New York
-$15.2M
2
AA
AQR Arbitrage
Connecticut
-$13.1M
3
MF
Magnetar Financial
Illinois
-$13.1M
4
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
-$10.1M
5
LA
Linden Advisors
New York
-$10.1M
Name Holding Trade Value Shares
Change 		Change in
Stake
SSA
26
Schonfeld Strategic Advisors
New York
– -$3.53M -350,000 Closed
KPF
27
K2 Principal Fund
Ontario, Canada
– -$3.22M -319,790 Closed
MTCM
28
Mint Tower Capital Management
Netherlands
– -$3.02M -300,000 Closed
PC
29
Periscope Capital
Ontario, Canada
– -$3.03M -300,000 Closed
Verition Fund Management
30
Verition Fund Management
Connecticut
– -$2.94M -291,500 Closed
AC
31
Aristeia Capital
Connecticut
– -$2.52M -250,000 Closed
CA
32
Crossingbridge Advisors
New York
– -$2.52M -250,000 Closed
PMAM
33
Picton Mahoney Asset Management
Ontario, Canada
– -$2.52M -250,000 Closed
WA
34
Whitebox Advisors
Minnesota
– -$2.52M -250,000 Closed
WRBC
35
W.R. Berkley Corp
Connecticut
– -$2.3M -228,206 Closed
ASM
36
ATW SPAC Management
New York
– -$2.2M -218,600 Closed
BFM
37
Boothbay Fund Management
New York
– -$2.21M -218,600 Closed
CC
38
Centiva Capital
New York
– -$1.51M -150,000 Closed
DAM
39
DLD Asset Management
New York
– -$1.51M -150,000 Closed
GAM
40
Gritstone Asset Management
Maryland
– -$1.01M -100,000 Closed
Parallax Volatility Advisers
41
Parallax Volatility Advisers
California
– -$1.01M -100,000 Closed
WC
42
Wealthspring Capital
New York
– -$780K -77,376 Closed
WAM
43
Wolverine Asset Management
Illinois
– -$261K -25,900 Closed
HCM
44
Highbridge Capital Management
New York
– -$253K -25,000 Closed
WAM
45
Warberg Asset Management
Illinois
– -$101K -10,000 Closed
1
2

ATIIU Hedge Fund Activity: Q2 2025 in Review

9 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Archimedes Tech SPAC Partners II Co Unit (ATIIU) for Q2 2025, worth a combined $13.4M — down 93% from $194M a quarter earlier.

Sellers outnumbered buyers: 36 funds closed out of ATIIU and 1 opened new positions — a net loss of 35 holders — while 3 trimmed existing stakes and 1 added.

The largest buyer was UBS Group, adding an estimated $32K. The largest seller was Tenor Capital Management, exiting entirely with an estimated $15.2M sold.

  • 9 institutional investors held Archimedes Tech SPAC Partners II Co Unit (ATIIU) as of Q2 2025, down from 44 in Q1 2025.
  • Funds reported $13.4M of Archimedes Tech SPAC Partners II Co Unit stock for Q2 2025, down 93% quarter-over-quarter.
  • 1 fund opened new Archimedes Tech SPAC Partners II Co Unit positions in Q2 2025 and 36 closed out, a net change of -35 holders.
  • The largest Archimedes Tech SPAC Partners II Co Unit buyer in Q2 2025 was UBS Group, an estimated $32K added.
  • The largest Archimedes Tech SPAC Partners II Co Unit seller in Q2 2025 was Tenor Capital Management, an estimated $15.2M sold.

Based on aggregated 13F filings for Q2 2025.