13F Insight
DOSSIER · 13F Holders · Q1 2026
OILK

PROSHARES TR

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

CUSIP 74347G804·50 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$79M
visible holders
Holders
50
filers reporting
Concentration
32.34%
Trek Financial, LLC #1
top holder share
AI Holders Summary · Q1 2026

50 institutions reported OILK in Q1 2026. Trek Financial, LLC leads at 32.3% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
Trek Financial, LLC
CIK 0001768195
$26M472K1.36%Q1 202602
Merit Financial Group, LLC
CIK 0001621225
$22M457K0.13%Q2 202603
NewSquare Capital LLC
CIK 0001546989
$8M145K0.68%Q1 202604
Belvedere Trading LLC
CIK 0001632341
$4M66K0.00%Q1 202605
Green Ridge Wealth Planning LLC
CIK 0002117069
$3M66K1.31%Q2 202606
Ethos Financial Group, LLC
CIK 0001954242
$3M48K0.19%Q1 202607
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$2M37K0.00%Q1 202608
Fortis Group Advisors, LLC
CIK 0001815183
$2M32K0.32%Q1 202609
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$2M35K0.00%Q1 202610
SIMPLEX TRADING, LLC
CIK 0001488542
$1M25K0.00%Q1 202611
Stratos Wealth Partners, LTD.
CIK 0001612865
$1M24K0.01%Q1 202612
B. Riley Wealth Advisors, Inc.
CIK 0001464811
$1M27K0.07%Q2 202613
FLOW TRADERS U.S. LLC
CIK 0001466697· Market maker
$1M21K0.04%Q1 202614
GUARDIAN WEALTH ADVISORS, LLC / NC
CIK 0001901403
$848K16K0.05%Q1 202615
FOUNDATIONS INVESTMENT ADVISORS, LLC
CIK 0001743404
$721K13K0.01%Q1 202616
LPL Financial LLC
CIK 0001403438
$687K13K0.00%Q1 202617
GROUP ONE TRADING LLC
CIK 0000932540
$429K8K0.00%Q1 202618
Cambridge Investment Research Advisors, Inc.
CIK 0001419186
$374K7K0.00%Q1 202619
HighTower Advisors, LLC
CIK 0001462245
$334K6K0.00%Q1 202620
Sanctuary Advisors, LLC
CIK 0001777271
$333K6K0.00%Q1 2026
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