Millennium Management
REPX icon

Millennium Management’s Riley Exploration Permian REPX Stock Holding History

Millennium Management’s Portfolio REPX Stock Details REPX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.39M Buy
65,694
+54,771
+501% +$1.63M ﹤0.01% 3701
2025
Q4 		$288K Sell
10,923
-6,684
-38% -$178K ﹤0.01% 5284
2025
Q3 		$477K Buy
+17,607
New +$481K ﹤0.01% 5101
2024
Q4 		– Sell
-9,530
Closed -$252K – 6386
2024
Q3 		$252K Sell
9,530
-15,277
-62% -$421K ﹤0.01% 5308
2024
Q2 		$702K Sell
24,807
-3,394
-12% -$93.6K ﹤0.01% 4378
2024
Q1 		$931K Sell
28,201
-765
-3% -$19.1K ﹤0.01% 4353
2023
Q4 		$789K Sell
28,966
-9,068
-24% -$256K ﹤0.01% 4329
2023
Q3 		$1.21M Buy
38,034
+3,841
+11% +$131K ﹤0.01% 4031
2023
Q2 		$1.22M Buy
+34,193
New +$1.33M ﹤0.01% 3881
2022
Q4 		– Sell
-20,098
Closed -$381K – 6957
2022
Q3 		$381K Buy
+20,098
New +$492K ﹤0.01% 5187
2021
Q4 		– Sell
-16,247
Closed -$381K – 7291
2021
Q3 		$381K Sell
16,247
-94,851
-85% -$2.02M ﹤0.01% 5606
2021
Q2 		$3.22M Buy
111,098
+81,641
+277% +$2.91M ﹤0.01% 3346
2021
Q1 		$766K Buy
+29,457
New +$800K ﹤0.01% 4460

Other funds holding REPX

YEPX
Yorktown Energy Partners XI New York $142M AUM 130.51% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
BEP
Bluescape Energy Partners Dallas, Texas $322M AUM 18.33% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
YEPX
Yorktown Energy Partners X New York $69.5M AUM 143.07% 1-Year Est. Return

Millennium Management's REPX Position: Q1 2026 in Review

Millennium Management increased its Riley Exploration Permian (REPX) stake by 501% in Q1 2026, buying an estimated $1.63M and bringing the position to 65,694 shares worth $2.39M. The position accounts for ﹤0.01% of the portfolio, ranked #3701.

Millennium Management first reported a position in REPX in Q1 2021 and has held it in 13 quarters since. The position peaked at $3.22M in Q2 2021. 168 funds tracked by Wall St. Rank hold REPX as of Q1 2026.

  • Millennium Management held 65,694 shares of Riley Exploration Permian worth $2.39M as of Q1 2026.
  • Millennium Management bought 54,771 Riley Exploration Permian shares in Q1 2026, an estimated $1.63M.
  • Riley Exploration Permian made up ﹤0.01% of Millennium Management's portfolio in Q1 2026, its #3701 holding.
  • Millennium Management first reported a position in Riley Exploration Permian in Q1 2021 and has held it in 13 quarters since.
  • Millennium Management's Riley Exploration Permian position peaked at $3.22M in Q2 2021.
  • 168 funds tracked by Wall St. Rank held Riley Exploration Permian as of Q1 2026.

Based on Millennium Management's 13F filing for Q1 2026, filed 15 May 2026.