DOSSIER · 13F Holders · Q1 2026

REX ETF TR

2 institutions still hold REX ETF TR as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 761562953·2 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$18K
visible holders
Holders
2
filers reporting
Concentration
65.83%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q1 2026

2 institutions reported REX ETF TR in Q1 2026. GROUP ONE TRADING LLC leads at 65.8% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
GROUP ONE TRADING LLC
CIK 0000932540
$12K5000.00%Q1 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$6K6000.00%Q1 2026