DOSSIER · 13F Holders · Q2 2026

ARCHIMEDES TECH SPAC PTNRS I

14 institutions still hold ARCHIMEDES TECH SPAC PTNRS I as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G0453R121·14 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$49M
visible holders
Holders
14
filers reporting
Concentration
25.77%
LMR Partners LLP #1
top holder share
AI Holders Summary · Q2 2026

14 institutions reported ARCHIMEDES TECH SPAC PTNRS I in Q2 2026. LMR Partners LLP leads at 25.8% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
LMR Partners LLP
CIK 0001578621
$13M1.3M0.05%Q2 2026
02
TORONTO DOMINION BANK
CIK 0000947263
$7M646K0.01%Q2 2026
03
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
$7M650K0.01%Q1 2026
04
RIVERNORTH CAPITAL MANAGEMENT, LLC
CIK 0001447578
$5M500K0.25%Q1 2026
05
OMERS ADMINISTRATION Corp
CIK 0001053321
$5M480K0.03%Q2 2026
06
ARISTEIA CAPITAL, L.L.C.
CIK 0001080171
$4M401K0.05%Q2 2026
07
BlueCrest Capital Management Ltd
CIK 0001610880
$3M275K0.09%Q2 2026
08
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$2M180K0.00%Q2 2026
09
Qube Research & Technologies Ltd
CIK 0001729829
$2M150K0.00%Q2 2026
10
Calamos Advisors LLC
CIK 0001316507
$1M124K0.00%Q2 2026
11
Westchester Capital Management, LLC
CIK 0001512805
$1M100K0.05%Q2 2026
12
Bulldog Investors, LLP
CIK 0001504304
$674K68K0.15%Q1 2026
13
Clear Street Group Inc.
CIK 0001881567
$349K34K0.00%Q2 2026
14
Tuttle Capital Management, LLC
CIK 0001581641
$109K11K0.07%Q2 2026