Archimedes Tech SPAC Partners II Co Unit
ATIIU
6 hedge funds and large institutions have $3.46M invested in Archimedes Tech SPAC Partners II Co Unit in 2025 Q3 according to their latest regulatory filings, with 0 funds opening new positions, 1 increasing their positions, 2 reducing their positions, and 3 closing their positions.
4.74% less ownership
Funds ownership: 6.28% → 1.53% (-4.7%)
33% less funds holding
Funds holding: 9 → 6 (-3)
50% less repeat investments, than reductions
Existing positions increased: 1 | Existing positions reduced: 2
74% less capital invested
Capital invested by funds: $13.4M → $3.46M (-$9.93M)
100% less first-time investments, than exits
New positions opened: 0 | Existing positions closed: 3
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CS
Clear Street
New York
|
+$199K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
-$5.15M |
| 2 |
RCM
Rivernorth Capital Management
West Palm Beach,
Florida
|
-$3.84M |
| 3 |
MI
MMCAP International
Grand Cayman,
Cayman Islands
|
-$1.29M |
| 4 |
TCM
Tuttle Capital Management
Riverside,
Connecticut
|
-$206K |
| 5 |
Jane Street
New York
|
-$6.31K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
1
JP Morgan Chase
New York
| $1.43M | – | – | – |
|
|
RCM
2
Rivernorth Capital Management
West Palm Beach,
Florida
| $940K | -$3.84M | -357,865 | -80% |
|
|
3
Jane Street
New York
| $579K | -$6.31K | -589 | -1% |
|
|
CS
4
Clear Street
New York
| $475K | +$199K | +18,572 | +97% |
|
5
UBS Group
Zurich,
Switzerland
| $42.1K | – | – | – |
|
6
Toronto Dominion Bank
Toronto, Ontario,
Ontario, Canada
| $13 | – | – | – |
|
|
7
Millennium Management
New York
| – | -$5.15M | -500,000 | Closed |
|
|
MI
8
MMCAP International
Grand Cayman,
Cayman Islands
| – | -$1.29M | -125,000 | Closed |
|
|
TCM
9
Tuttle Capital Management
Riverside,
Connecticut
| – | -$206K | -20,000 | Closed |
|
ATIIU Hedge Fund Activity: Q3 2025 in Review
6 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Archimedes Tech SPAC Partners II Co Unit (ATIIU) for Q3 2025, worth a combined $3.46M — down 74% from $13.4M a quarter earlier.
Sellers outnumbered buyers: 3 funds closed out of ATIIU and 0 opened new positions — a net loss of 3 holders — while 2 trimmed existing stakes and 1 added.
The largest buyer was Clear Street, adding an estimated $199K. The largest seller was Millennium Management, exiting entirely with an estimated $5.15M sold.
- 6 institutional investors held Archimedes Tech SPAC Partners II Co Unit (ATIIU) as of Q3 2025, down from 9 in Q2 2025.
- Funds reported $3.46M of Archimedes Tech SPAC Partners II Co Unit stock for Q3 2025, down 74% quarter-over-quarter.
- 0 funds opened new Archimedes Tech SPAC Partners II Co Unit positions in Q3 2025 and 3 closed out, a net change of -3 holders.
- The largest Archimedes Tech SPAC Partners II Co Unit buyer in Q3 2025 was Clear Street, an estimated $199K added.
- The largest Archimedes Tech SPAC Partners II Co Unit seller in Q3 2025 was Millennium Management, an estimated $5.15M sold.
Based on aggregated 13F filings for Q3 2025.