13F Insight
DOSSIER · 13F Holders · Q2 2026

ARQIT QUANTUM INC

13 institutions still hold ARQIT QUANTUM INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G0567U119·13 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$472K
visible holders
Holders
13
filers reporting
Concentration
44.78%
SLT Holdings LLC #1
top holder share
AI Holders Summary · Q2 2026

13 institutions reported ARQIT QUANTUM INC in Q2 2026. SLT Holdings LLC leads at 44.8% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
SLT Holdings LLC
CIK 0002052222
$211K3.0M0.13%Q2 202602
FOUNDATIONS INVESTMENT ADVISORS, LLC
CIK 0001743404
$211K3.0M0.00%Q2 202603
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$14K195K0.00%Q2 202604
Vestcor Inc
CIK 0001536925
$11K75K0.00%Q1 202605
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$6K43K0.00%Q1 202606
Silver Rock Financial LP
CIK 0001674784
$6K42K0.01%Q1 202607
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
CIK 0001535845
$5K74K0.00%Q2 202608
GOLDMAN SACHS GROUP INC
CIK 0000886982
$3K47K0.00%Q2 202609
ABLE Financial Group, LLC
CIK 0001977500
$2K30K0.00%Q2 202610
WOLVERINE ASSET MANAGEMENT LLC
CIK 0001279891
$73910K0.00%Q2 202611
UBS Group AG
CIK 0001610520
$1272K0.00%Q2 202612
OSAIC HOLDINGS, INC.
CIK 0001677044
$182500.00%Q2 202613
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025