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ARCI

Archimedes Tech SPAC Partners III
ARCI

52 hedge funds and large institutions have $203M invested in Archimedes Tech SPAC Partners III in 2026 Q2 according to their latest regulatory filings, with 16 funds opening new positions, 9 increasing their positions, 4 reducing their positions, and 4 closing their positions.

New
Increased
Maintained
Reduced
Closed

300% more first-time investments, than exits

New positions opened: 16 | Existing positions closed: 4

125% more repeat investments, than reductions

Existing positions increased: 9 | Existing positions reduced: 4

32% more capital invested

Capital invested by funds: $153M → $203M (+$49.3M)

30% more funds holding

Funds holding: 40 → 52 (+12)

13.25% more ownership

Funds ownership: 44.14% → 57.39% (+13%)

Holders
52
Holders Change
+12
Holders Change %
+30%
% of All Funds
0.63%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
16
Increased
9
Reduced
4
Closed
4
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
AIMCA
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
+$9.93M
2
AA
AQR Arbitrage
Connecticut
+$7.53M
3
RCM
Rivernorth Capital Management
Florida
+$4.97M
4
BNP Paribas Financial Markets
BNP Paribas Financial Markets
France
+$4.89M
5
COPPSERS
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
+$3.97M

Top Sellers

Rank Fund Capital Flow
1
AGM
Alpine Global Management
New York
-$1.48M
2
CS
Clear Street
New York
-$925K
3
VF
Virtu Financial
New York
-$894K
4
MC
Meteora Capital
Florida
-$589K
5
Parallax Volatility Advisers
Parallax Volatility Advisers
California
-$495K
Name Holding Trade Value Shares
Change 		Change in
Stake
Adage Capital Partners
1
Adage Capital Partners
Massachusetts
$18M – – –
LA
2
Linden Advisors
New York
$12M – – –
MF
3
Magnetar Financial
Illinois
$12M – – –
GL
4
Governors Lane
New York
$11.5M +$1.46M +146,610 +15%
TCM
5
Tenor Capital Management
New York
$10M – – –
AIMCA
6
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$10M +$9.93M +1,000,000 New
Verition Fund Management
7
Verition Fund Management
Connecticut
$8.16M +$649K +65,355 +9%
SAMU
8
SONA Asset Management (US)
New York
$8.01M – – –
AA
9
AQR Arbitrage
Connecticut
$7.58M +$7.53M +757,612 New
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
10
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$5.51M – – –
SCM
11
Shaolin Capital Management
Florida
$5.11M -$299K -30,068 -6%
RCM
12
Rivernorth Capital Management
Florida
$5.08M +$4.97M +500,000 New
RCM
13
Radcliffe Capital Management
Pennsylvania
$5.05M +$898K +90,376 +22%
MCM
14
Moore Capital Management
New York
$5M – – –
PAMP
15
Polar Asset Management Partners
Ontario, Canada
$5M – – –
GCL
16
Glazer Capital LLC
New York
$4.97M -$77.4K -7,793 -2%
BNP Paribas Financial Markets
17
BNP Paribas Financial Markets
France
$4.93M +$4.89M +492,372 New
D.E. Shaw & Co
18
D.E. Shaw & Co
New York
$4.51M +$253K +25,500 +6%
MC
19
Meteora Capital
Florida
$4.25M -$589K -59,251 -12%
PC
20
Periscope Capital
Ontario, Canada
$4.09M – – –
COPPSERS
21
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$4M +$3.97M +400,000 New
KPF
22
K2 Principal Fund
Ontario, Canada
$3.09M +$87.4K +8,797 +3%
Hudson Bay Capital Management
23
Hudson Bay Capital Management
Connecticut
$3M – – –
MI
24
MMCAP International
Cayman Islands
$3M +$2.98M +300,000 New
SSA
25
Schonfeld Strategic Advisors
New York
$2.98M +$2.95M +297,404 New
1
2 3

ARCI Hedge Fund Activity: Q2 2026 in Review

52 of the 8,279 institutional investors tracked by Wall St. Rank reported a position in Archimedes Tech SPAC Partners III (ARCI) for Q2 2026, worth a combined $203M — up 32% from $153M a quarter earlier.

Buyers outnumbered sellers: 16 funds opened new ARCI positions and 4 closed out — a net gain of 12 holders — while 9 added to existing stakes and 4 trimmed.

The largest buyer was Alberta Investment Management Corp (AIMCo), opening a new position worth an estimated $9.93M. The largest seller was Alpine Global Management, exiting entirely with an estimated $1.48M sold.

  • 52 institutional investors held Archimedes Tech SPAC Partners III (ARCI) as of Q2 2026, up from 40 in Q1 2026.
  • Funds reported $203M of Archimedes Tech SPAC Partners III stock for Q2 2026, up 32% quarter-over-quarter.
  • 16 funds opened new Archimedes Tech SPAC Partners III positions in Q2 2026 and 4 closed out, a net change of +12 holders.
  • The largest Archimedes Tech SPAC Partners III buyer in Q2 2026 was Alberta Investment Management Corp (AIMCo), an estimated $9.93M added.
  • The largest Archimedes Tech SPAC Partners III seller in Q2 2026 was Alpine Global Management, an estimated $1.48M sold.

Based on aggregated 13F filings for Q2 2026.