RILEY EXPLORATION PERMIAN IN (REPX) Top Institutional Shareholders
RILEY EXPLORATION PERMIAN IN (REPX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $523.44M in REPX holdings during the latest filing period.
Yorktown Energy Partners Xi, L.P. is currently the largest disclosed institutional shareholder of REPX tracked by InsiderSet, reporting ownership valued at approximately $65.03M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $59.79M, representing an estimated loss of -8.07% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 52% of the total disclosed REPX value among the investors covered in this analysis. Major shareholders include Yorktown Energy Partners Xi, L.P., Blackrock, Inc., Bluescape Energy Partners Llc, and several other long-term asset managers with concentrated positions in RILEY EXPLORATION PERMIAN IN (REPX).
This page ranks the largest institutional REPX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
163
Total Reported Value
$523.44M
Largest Holder
Yorktown Energy Partners Xi, L.P.
Largest Position
$65.03M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
183
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Yorktown Energy Partners Xi, L.P. | 45.95% | 1,784,113 | $65,030,919 | $59,785,627 | -$5,245,292 | -8.07% | |
| Blackrock, Inc. | 0.00% | 1,016,809 | $37,062,707 | $34,073,270 | -$2,989,437 | -8.07% | |
| Bluescape Energy Partners Llc | 11.20% | 990,000 | $36,085,500 | $33,174,900 | -$2,910,600 | -8.07% | |
| American Century Companies Inc | 0.01% | 627,206 | $22,861,659 | $21,017,673 | -$1,843,986 | -8.07% | |
| Dimensional Fund Advisors Lp | 0.00% | 616,564 | $22,474,362 | $20,661,060 | -$1,813,302 | -8.07% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 608,833 | $22,191,963 | $20,401,994 | -$1,789,969 | -8.07% | |
| Vanguard Capital Management Llc | 0.00% | 578,960 | $21,103,092 | $19,400,950 | -$1,702,142 | -8.07% | |
| Driehaus Capital Management Llc | 0.12% | 443,719 | $16,173,558 | $14,869,024 | -$1,304,534 | -8.07% | |
| Two Sigma Investments, Lp | 0.01% | 421,820 | $15,375,339 | $14,135,188 | -$1,240,151 | -8.07% | |
| Yorktown Energy Partners X, L.P. | 20.50% | 390,860 | $14,246,847 | $13,097,719 | -$1,149,128 | -8.07% | |
| Vanguard Portfolio Management Llc | 0.00% | 332,818 | $12,131,216 | $11,152,731 | -$978,485 | -8.07% | |
| Geode Capital Management, Llc | 0.00% | 306,484 | $11,174,076 | $10,270,279 | -$903,797 | -8.09% | |
| Marshall Wace, Llp | 0.01% | 306,556 | $11,173,967 | $10,272,692 | -$901,275 | -8.07% | |
| Royce & Associates Lp | 0.09% | 261,647 | $9,537,033 | $8,767,791 | -$769,242 | -8.07% | |
| Kennedy Capital Management Llc | 0.20% | 254,365 | $9,271,604 | $8,523,771 | -$747,833 | -8.07% | |
| State Street Corp | 0.00% | 249,911 | $9,109,256 | $8,374,518 | -$734,738 | -8.07% | |
| Mackenzie Financial Corp | 0.01% | 241,976 | $8,820,025 | $8,108,616 | -$711,409 | -8.07% | |
| Bank Of New York Mellon Corp | 0.00% | 235,786 | $8,594,405 | $7,901,189 | -$693,216 | -8.07% | |
| Citadel Advisors Llc | 0.01% | 229,782 | $8,375,554 | $7,699,995 | -$675,559 | -8.07% | |
| Bank Of America Corp | 0.00% | 196,032 | $7,145,366 | $6,569,032 | -$576,334 | -8.07% | |
| First Trust Advisors Lp | 0.01% | 193,512 | $7,053,512 | $6,484,587 | -$568,925 | -8.07% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.01% | 184,148 | $6,712,195 | $6,170,799 | -$541,396 | -8.07% |
| Northern Trust Corp | 0.00% | 157,900 | $5,755,455 | $5,291,229 | -$464,226 | -8.07% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 142,100 | $5,179,545 | $4,761,771 | -$417,774 | -8.07% |
| Los Angeles Capital Management Llc | 0.02% | 134,995 | $4,920,568 | $4,523,682 | -$396,886 | -8.07% | |
| Raymond James Financial Inc | 0.00% | 132,589 | $4,832,869 | $4,443,057 | -$389,812 | -8.07% | |
| Goldman Sachs Group Inc | 0.00% | 130,739 | $4,765,436 | $4,381,064 | -$384,372 | -8.07% | |
| Fmr Llc | 0.00% | 129,898 | $4,734,777 | $4,352,882 | -$381,895 | -8.07% | |
| Umb Bank, N.A. | 0.07% | 129,578 | $4,723,118 | $4,342,159 | -$380,959 | -8.07% | |
| D. E. Shaw & Co., Inc. | 0.00% | 118,237 | $4,309,739 | $3,962,122 | -$347,617 | -8.07% | |
| Morgan Stanley | 0.00% | 116,422 | $4,243,605 | $3,901,301 | -$342,304 | -8.07% | |
| Jackson Hole Capital Partners, Llc | 0.68% | 112,617 | $4,104,890 | $3,773,796 | -$331,094 | -8.07% | |
| Point72 Asset Management, L.P. | 0.01% | 106,039 | $3,865,122 | $3,553,367 | -$311,755 | -8.07% | |
| Kennondale Capital Management Llc | 2.47% | 94,041 | $3,427,794 | $3,151,314 | -$276,480 | -8.07% | |
| Charles Schwab Investment Management Inc | 0.00% | 92,716 | $3,379,498 | $3,106,913 | -$272,585 | -8.07% | |
| Aqr Capital Management Llc | 0.00% | 90,889 | $3,312,904 | $3,045,690 | -$267,214 | -8.07% | |
| Bnp Paribas Financial Markets | 0.00% | 89,377 | $3,257,792 | $2,995,023 | -$262,769 | -8.07% | |
| Mcalvany Wealth Management Llc | 2.08% | 84,393 | $3,098,080 | $2,828,009 | -$270,071 | -8.72% | |
| Lazard Asset Management Llc | 0.00% | 79,098 | $2,883,122 | $2,650,574 | -$232,548 | -8.07% | |
| Prudential Financial Inc | 0.00% | 77,948 | $2,841,205 | $2,612,037 | -$229,168 | -8.07% | |
| Vanguard Fiduciary Trust Co | 0.00% | 70,938 | $2,585,690 | $2,377,132 | -$208,558 | -8.07% | |
| Castleknight Management Lp | 0.12% | 69,709 | $2,540,893 | $2,335,949 | -$204,944 | -8.07% | |
| Osaic Holdings, Inc. | 0.00% | 69,113 | $2,519,164 | $2,315,977 | -$203,187 | -8.07% | |
| Victory Capital Management Inc | 0.00% | 69,075 | $2,517,784 | $2,314,703 | -$203,081 | -8.07% | |
| Segall Bryant & Hamill, Llc | 0.04% | 75,416 | $2,511,354 | $2,527,190 | +$15,836 | +0.63% | |
| Millennium Management Llc | 0.00% | 65,694 | $2,394,546 | $2,201,406 | -$193,140 | -8.07% | |
| Ameriprise Financial Inc | 0.00% | 62,190 | $2,266,826 | $2,083,987 | -$182,839 | -8.07% | |
| Empowered Funds, Llc | 0.01% | 53,949 | $1,966,442 | $1,807,831 | -$158,611 | -8.07% | |
| Point Nemo Capital, Llc | 0.75% | 59,279 | $1,904,947 | $1,986,439 | +$81,492 | +4.28% | |
| Quadrature Capital Ltd | 0.02% | 51,017 | $1,859,570 | $1,709,580 | -$149,990 | -8.07% |
Frequently asked questions about REPX
Who owns the most REPX stock?
The largest holders of REPX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for RILEY EXPLORATION PERMIAN IN (REPX).
Is REPX widely held by superinvestors?
Many widely followed stocks like REPX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly REPX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.