DOSSIER · 13F Holders · Q1 2026

PROSHARES TR

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

CUSIP 74350P903·2 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$3M
visible holders
Holders
2
filers reporting
Concentration
83.00%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q1 2026

2 institutions reported PROSHARES TR in Q1 2026. GROUP ONE TRADING LLC leads at 83.0% 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
$2M50K0.00%Q1 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$425K10K0.00%Q1 2026