Who owns Riley Exploration Permian, Inc. (REPX)
Which tracked institutional funds hold REPX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See REPX company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on REPX is one-sided between 2025-Q4 and 2026-Q1: 78 added or opened and 13 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
REPX’s largest tracked holder by dollar value, Yorktown Energy Partners XI, L.P., sizes it at 45.9% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 45.9pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in REPX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 170 tracked filers holding REPX, 117 increased or opened the position and 52 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in REPX between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 21
- VANGUARD CAPITAL MANAGEMENT LLC$21M
- Driehaus Capital Management LLC$16M
- TWO SIGMA INVESTMENTS, LP$15M
- VANGUARD PORTFOLIO MANAGEMENT LLC$12M
- MARSHALL WACE, LLP$11M
- UMB Bank, n.a.$5M
Full exits 5
- VANGUARD GROUP INC$25M
- NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO$2M
- PCG Wealth Advisors, LLC$981K
- PANAGORA ASSET MANAGEMENT INC$616K
- AlphaQuest LLC$509K
Largest adds
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$20M
- Yorktown Energy Partners XI, L.P.$18M
- BlackRock, Inc.$12M
- DIMENSIONAL FUND ADVISORS LP$8M
- CITADEL ADVISORS LLC$8M
- AMERICAN CENTURY COMPANIES INC$7M
Largest trims
- Bluescape Energy Partners LLC$74M
- Jackson Hole Capital Partners, LLC$4M
- Cannell & Spears LLC$2M
- DENALI ADVISORS LLC$1M
- UBS Group AG$1M
- O'SHAUGHNESSY ASSET MANAGEMENT, LLC$633K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Yorktown Energy Partners XI, L.P. | 1,784,113 | $65M | 11.5% | 2026-Q1 |
| BlackRock, Inc. added | 1,016,809 | $37M | 6.6% | 2026-Q1 |
| Bluescape Energy Partners LLC trimmed | 990,000 | $36M | 6.4% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 627,206 | $23M | 4.0% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 616,564 | $22M | 4.0% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 608,833 | $22M | 3.9% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 578,960 | $21M | 3.7% | 2026-Q1 |
| Driehaus Capital Management LLC new | 443,719 | $16M | 2.9% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 421,820 | $15M | 2.7% | 2026-Q1 |
| Yorktown Energy Partners X, L.P. | 390,860 | $14M | 2.5% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 332,818 | $12M | 2.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 306,484 | $11M | 2.0% | 2026-Q1 |
| MARSHALL WACE, LLP added | 306,556 | $11M | 2.0% | 2026-Q1 |
| ROYCE & ASSOCIATES LP added | 261,647 | $10M | 1.7% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 254,365 | $9M | 1.6% | 2026-Q1 |
| STATE STREET CORP added | 249,911 | $9M | 1.6% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP added | 241,976 | $9M | 1.6% | 2026-Q1 |
| Bank of New York Mellon Corp added | 235,786 | $9M | 1.5% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 229,782 | $8M | 1.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 196,032 | $7M | 1.3% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 193,512 | $7M | 1.2% | 2026-Q1 |
| First Eagle Investment Management, LLC trimmed | 184,148 | $7M | 1.2% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 157,900 | $6M | 1.0% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 142,100 | $5M | 0.9% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 134,995 | $5M | 0.9% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 132,589 | $5M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 130,739 | $5M | 0.8% | 2026-Q1 |
| FMR LLC added | 129,898 | $5M | 0.8% | 2026-Q1 |
| UMB Bank, n.a. new | 129,578 | $5M | 0.8% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 118,237 | $4M | 0.8% | 2026-Q1 |
| MORGAN STANLEY added | 116,422 | $4M | 0.8% | 2026-Q1 |
| Jackson Hole Capital Partners, LLC trimmed | 112,617 | $4M | 0.7% | 2026-Q1 |
| Point72 Asset Management, L.P. new | 106,039 | $4M | 0.7% | 2026-Q1 |
| Kennondale Capital Management LLC added | 94,041 | $3M | 0.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 92,716 | $3M | 0.6% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 90,355 | $3M | 0.6% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 89,377 | $3M | 0.6% | 2026-Q1 |
| McAlvany Wealth Management LLC added | 84,393 | $3M | 0.5% | 2026-Q1 |
| Pacer Advisors, Inc. added | 83,268 | $3M | 0.5% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 79,098 | $3M | 0.5% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 77,948 | $3M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 70,938 | $3M | 0.5% | 2026-Q1 |
| CastleKnight Management LP new | 69,709 | $3M | 0.4% | 2026-Q1 |
| OSAIC HOLDINGS, INC. added | 69,113 | $3M | 0.4% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 69,075 | $3M | 0.4% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 75,416 | $3M | 0.4% | 2026-Q1 |
| HRT FINANCIAL LP added | 66,656 | $2M | 0.4% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 65,694 | $2M | 0.4% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 62,190 | $2M | 0.4% | 2026-Q1 |
| LSV ASSET MANAGEMENT added | 59,100 | $2M | 0.4% | 2026-Q1 |
| Empowered Funds, LLC added | 53,949 | $2M | 0.3% | 2026-Q1 |
| Quadrature Capital Ltd new | 51,017 | $2M | 0.3% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 45,785 | $2M | 0.3% | 2026-Q1 |
| SEI INVESTMENTS CO added | 41,484 | $2M | 0.3% | 2026-Q1 |
| Jump Financial, LLC added | 40,515 | $1M | 0.3% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P added | 37,041 | $1M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 36,364 | $1M | 0.2% | 2026-Q1 |
| North Star Investment Management Corp. added | 35,800 | $1M | 0.2% | 2026-Q1 |
| Invesco Ltd. added | 34,277 | $1M | 0.2% | 2026-Q1 |
| Point Nemo Capital, LLC added | 33,829 | $1M | 0.2% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 31,170 | $1M | 0.2% | 2026-Q1 |
| Quantinno Capital Management LP added | 31,075 | $1M | 0.2% | 2026-Q1 |
| UBS Group AG trimmed | 30,989 | $1M | 0.2% | 2026-Q1 |
| Engineers Gate Manager LP added | 28,997 | $1M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 28,799 | $1M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd new | 28,498 | $1M | 0.2% | 2026-Q1 |
| SummerHaven Investment Management, LLC trimmed | 27,890 | $1M | 0.2% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC trimmed | 27,148 | $990K | 0.2% | 2026-Q1 |
| Quantbot Technologies LP added | 26,633 | $971K | 0.2% | 2026-Q1 |
| Creative Planning added | 26,155 | $953K | 0.2% | 2026-Q1 |
| State of Tennessee, Department of Treasury added | 25,158 | $917K | 0.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 24,689 | $900K | 0.2% | 2026-Q1 |
| WINTON GROUP Ltd added | 24,548 | $895K | 0.2% | 2026-Q1 |
| Brevan Howard Capital Management LP added | 22,259 | $811K | 0.1% | 2026-Q1 |
| Swiss National Bank | 21,700 | $791K | 0.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 21,670 | $790K | 0.1% | 2026-Q1 |
| Cannell & Spears LLC trimmed | 21,200 | $773K | 0.1% | 2026-Q1 |
| Ethic Inc. trimmed | 20,850 | $760K | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 20,238 | $738K | 0.1% | 2026-Q1 |
| Ellevest, Inc. trimmed | 19,398 | $707K | 0.1% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 18,564 | $677K | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 18,251 | $665K | 0.1% | 2026-Q1 |
| XTX Topco Ltd added | 18,111 | $660K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 17,498 | $638K | 0.1% | 2026-Q1 |
| Y-Intercept (Hong Kong) Ltd added | 17,270 | $629K | 0.1% | 2026-Q1 |
| RBF Capital, LLC | 15,000 | $547K | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC trimmed | 14,678 | $535K | 0.1% | 2026-Q1 |
| Koss-Olinger Consulting, LLC trimmed | 14,655 | $534K | 0.1% | 2026-Q1 |
| Dynamic Technology Lab Private Ltd added | 14,493 | $528K | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 948,813 | $25M | 4.4% | 2025-Q4 stale |
| Yorktown Energy Partners VIII, L.P. | 287,627 | $8M | 1.5% | 2025-Q1 stale |
| TrueMark Investments, LLC new | 111,650 | $3M | 0.5% | 2025-Q3 stale |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO added | 5,340 | $2M | 0.4% | 2025-Q4 stale |
| Brandywine Global Investment Management, LLC trimmed | 91,360 | $2M | 0.4% | 2025-Q3 stale |
| PCG Wealth Advisors, LLC trimmed | 37,168 | $981K | 0.2% | 2025-Q4 stale |
| Inspire Investing, LLC trimmed | 25,596 | $747K | 0.1% | 2025-Q1 stale |
| CWA Asset Management Group, LLC added | 27,086 | $710K | 0.1% | 2025-Q2 stale |
| ALGERT GLOBAL LLC | 25,947 | $681K | 0.1% | 2025-Q2 stale |
| PANAGORA ASSET MANAGEMENT INC trimmed | 23,333 | $616K | 0.1% | 2025-Q4 stale |
| Hillsdale Investment Management Inc. | 20,088 | $586K | 0.1% | 2025-Q1 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.