13F Insight
DOSSIER · 13F Holders · Q1 2026BellwetherCompounder
REPX

RILEY EXPLORATION PERMIAN IN

170 institutions still hold RILEY EXPLORATION PERMIAN IN as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 76665T102·170 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 4.7%
vs prior quarter
13F value held
$362M
51.0% inst. owned
of float
Holders
170
-126 QoQ
filers reporting
Activity
+86 / −15
+985 added · −957 reduced
this quarter
Concentration
17.96%
Yorktown Energy Partners XI, L.P. #1
top holder share
AI Holders Summary · Q1 2026

170 institutions reported REPX in Q1 2026. Yorktown Energy Partners XI, L.P. leads at 18.0% of the visible book. -126 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Yorktown Energy Partners XI, L.P.
CIK 0001667954
$65M1.8M45.95%Q1 202602
BlackRock, Inc.
CIK 0002012383
$37M1.0M0.00%Q1 202603
Bluescape Energy Partners LLC
CIK 0001629283
$36M990K11.20%Q1 202604
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$23M627K0.01%Q1 202605
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$22M617K0.00%Q1 202606
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$22M609K0.01%Q1 202607
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$21M579K0.00%Q1 202608
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 0000938206
$16M444K0.12%Q1 202609
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$15M422K0.01%Q1 202610
Yorktown Energy Partners X, L.P.
CIK 0001577919
$14M391K20.50%Q1 202611
Vanguard Portfolio Management
CIK 0002100121
$12M333K0.00%Q1 202612
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$11M306K0.00%Q1 202613
ROYCE & ASSOCIATES LP
CIK 0000906304
$10M262K0.09%Q1 202614
KENNEDY CAPITAL MANAGEMENT LLC
CIK 0000884589
$9M254K0.20%Q1 202615
STATE STREET CORP
CIK 0000093751
$9M250K0.00%Q1 202616
MACKENZIE FINANCIAL CORP
CIK 0000919859
$9M242K0.01%Q1 202617
Bank of New York Mellon Corp
CIK 0001390777
$9M236K0.00%Q1 202618
BANK OF AMERICA CORP /DE/
CIK 0000070858
$7M196K0.00%Q1 202619
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$7M194K0.01%Q1 202620
First Eagle Investment Management, LLC
CIK 0001325447
$7M184K0.01%Q1 2026
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