DOSSIER · 13F Holders · Q1 2026
PBRG

THEMES ETF TR

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

CUSIP 88340F712·3 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$829K
visible holders
Holders
3
filers reporting
Concentration
70.00%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q1 2026

3 institutions reported PBRG in Q1 2026. Optiver Holding B.V. leads at 70.0% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
Optiver Holding B.V.
CIK 0001859606· Market maker
$580K13K0.00%Q1 2026
02
GTS SECURITIES LLC
CIK 0001452765· Market maker
$248K5K0.01%Q1 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$461100.00%Q1 2026