Archimedes Tech SPAC Partners III

ARCIU · NASDAQ

$10.13−$0.11 (−1.07%)TodayMarket closed ·
No price history for this range.

Who owns ARCIU

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 45.7% of ARCIU’s shares.

  • Archimedes Tech SPAC Sponsors III, LLC18.1%
  • Adage Capital Management, L.P.5.1%
  • Magnetar Capital Partners LP3.4%
  • Linden Advisors L.P.3.4%
  • Next 6 largest institutions15.7%
  • All other shareholders54.3%
Top institutional holders of ARCIU
HolderShares% of shares
Archimedes Tech SPAC Sponsors III, LLC6.39M18.12%
Adage Capital Management, L.P.1.80M5.10%
Magnetar Capital Partners LP1.20M3.40%
Linden Advisors L.P.1.20M3.40%
Governors Lane LP1.15M3.25%
Tenor Capital Management Co., L.P.1.00M2.84%
Alberta Investment Management Corporation1.00M2.84%
Verition Fund Management LLC815.36K2.31%
Sona Asset Management (UK) LLP800.00K2.27%
AQR Capital Management, LLC757.61K2.15%

Largest mutual fund holders

Top mutual fund holders of ARCIU
HolderShares% of shares
First Trust Merger Arbitrage Fund171.73K0.49%
RiverNorth Opportunities Fund, Inc.100.00K0.28%
First Trust Multi-Strategy Fund27.22K0.08%
Fidelity NASDAQ Composite Index Fund2.20K0.01%

Short interest

Settled Oct 15, 2026

Shares short
297
Days to cover
2.36
% of shares outstanding
0.00%
Average daily volume
126
Change since last report
+10.4%

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