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ARCIU

Archimedes Tech SPAC Partners III Units
ARCIU

29 hedge funds and large institutions have $91M invested in Archimedes Tech SPAC Partners III Units in 2026 Q1 according to their latest regulatory filings, with 29 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

44.15% more ownership

Funds ownership: 0% → 44.15% (+44%)

Holders
29
Holders Change
+29
Holders Change %
–
% of All Funds
0.35%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
29
Increased
–
Reduced
–
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
LP
LMR Partners
United Kingdom
+$12.6M
2
AIMCA
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
+$10.1M
3
AA
AQR Arbitrage
Connecticut
+$7.62M
4
Tudor Investment Corp
Tudor Investment Corp
Connecticut
+$6.53M
5
LIP
Lighthouse Investment Partners
Florida
+$5.03M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
LP
1
LMR Partners
United Kingdom
$12.5M +$12.6M +1,250,000 New
AIMCA
2
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$10M +$10.1M +1,000,000 New
AA
3
AQR Arbitrage
Connecticut
$7.56M +$7.62M +757,625 New
Tudor Investment Corp
4
Tudor Investment Corp
Connecticut
$6.5M +$6.53M +650,000 New
LIP
5
Lighthouse Investment Partners
Florida
$5M +$5.03M +500,000 New
RCM
6
Rivernorth Capital Management
Florida
$5M +$5.03M +500,000 New
BNP Paribas Financial Markets
7
BNP Paribas Financial Markets
France
$4.92M +$4.95M +492,375 New
OAC
8
OMERS Administration Corp
Ontario, Canada
$4.8M +$4.83M +480,000 New
COPPSERS
9
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$4M +$4.02M +400,000 New
AC
10
Aristeia Capital
Connecticut
$4M +$4.02M +399,790 New
Millennium Management
11
Millennium Management
New York
$3.5M +$3.52M +350,000 New
MI
12
MMCAP International
Cayman Islands
$3M +$3.02M +300,000 New
BCM
13
BlueCrest Capital Management
Jersey
$2.76M +$2.76M +275,000 New
LPC
14
Lineage Point Capital
Florida
$2.75M +$2.76M +275,000 New
Toronto Dominion Bank
15
Toronto Dominion Bank
Ontario, Canada
$2.5M +$2.51M +250,000 New
SSA
16
Schonfeld Strategic Advisors
New York
$2.36M +$2.38M +236,368 New
WC
17
Wealthspring Capital
New York
$1.66M +$1.67M +166,480 New
Qube Research & Technologies (QRT)
18
Qube Research & Technologies (QRT)
United Kingdom
$1.5M +$1.51M +150,000 New
PMAM
19
Picton Mahoney Asset Management
Ontario, Canada
$1.5M +$1.51M +150,000 New
Calamos Advisors
20
Calamos Advisors
Illinois
$1.24M +$1.25M +124,000 New
BFM
21
Boothbay Fund Management
New York
$1M +$1.01M +100,000 New
WCMNY
22
Westchester Capital Management (New York)
New York
$998K +$1.01M +100,000 New
BI
23
Bulldog Investors
New Jersey
$674K +$679K +67,500 New
AA
24
ABC Arbitrage
France
$400K +$402K +40,000 New
HF
25
HRT Financial
New York
$250K +$251K +24,996 New
1
2

ARCIU Hedge Fund Activity: Q1 2026 in Review

29 of the 8,172 institutional investors tracked by Wall St. Rank reported a position in Archimedes Tech SPAC Partners III Units (ARCIU) for Q1 2026, worth a combined $91M.

Buyers outnumbered sellers: 29 funds opened new ARCIU positions and 0 closed out — a net gain of 29 holders — while 0 added to existing stakes and 0 trimmed.

The largest buyer was LMR Partners, opening a new position worth an estimated $12.6M.

  • 29 institutional investors held Archimedes Tech SPAC Partners III Units (ARCIU) as of Q1 2026, up from 0 in Q4 2025.
  • Funds reported $91M of Archimedes Tech SPAC Partners III Units stock for Q1 2026.
  • 29 funds opened new Archimedes Tech SPAC Partners III Units positions in Q1 2026 and 0 closed out, a net change of +29 holders.
  • The largest Archimedes Tech SPAC Partners III Units buyer in Q1 2026 was LMR Partners, an estimated $12.6M added.

Based on aggregated 13F filings for Q1 2026.