REI · Ring Energy, Inc. · Shareholders & Ownership

$1.37 +0.05 (+3.41%)

Russell 2000 member Rebalance outlook locked

Market Cap

$343.91M

260.54M

Volume · Oct 23 875.17K Avg daily vol (3M) 3.43M

Every disclosed holder of REI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns REI

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	150	122,958,631	47.19%	Yes
Insiders (Forms 3, 4, 5)	17	53,056,714	20.36%	Yes
13D/G-only blocks	3	66,353,540	25.47%	Yes
Remaining	—	18,170,722	6.97%	Rest
Registered funds (N-PORT, not summed)	82	33,846,750	12.99%	No

Shares outstanding: 260,539,607, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of REI

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Warburg Pincus & Company US, LLC. 13D CIK 1944796 · Unknown · Mar 4, 2024	46,120,643	17.70%	—	Mar 4, 2024
2	Warburg Pincus & Co US, LLC Insider CIK 1635320 · Jun 13, 2025 10% Owner, issuer-wide	20,509,300	7.87%	-2,486,027	Jun 13, 2025	10% Owner, issuer-wide
2.1	Warburg Pincus & Company US, LLC. 13D CIK 1635320 · Unknown · Feb 24, 2025 not summed	28,945,643	11.11%	-6,575,000	Feb 24, 2025	not summed
3	Warburg Pincus (E&P) XII LLC Insider CIK 1912643 · Jun 13, 2025 10% Owner, issuer-wide	20,509,300	7.87%	-2,486,027	Jun 13, 2025	10% Owner, issuer-wide
4	PEAK6 LLC 13F CIK 1389958 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	17,079,382	6.56%	+15,929,382	Jun 30, 2026	carried, not yet filed for the newest quarter
4.1	Matthew Hulsizer 13G CIK 1389956 · Broker-dealer · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	17,079,382	6.56%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
4.2	PEAK6 LLC 13G CIK 1389958 · Broker-dealer · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	17,079,382	6.56%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
5	William R. Kruse 13G CIK 1690137 · Unknown · Dec 31, 2025 Rule 13d-1(c), passive investor	14,758,732	5.66%	+307,543	Dec 31, 2025	Rule 13d-1(c), passive investor
6	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	12,086,312	4.64%	+10,400,044	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	4,668,204	1.79%	—	Jun 30, 2026	iShares Trust, not summed
6.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	1,751,565	0.67%	—	Jun 30, 2026	iShares Trust, not summed
6.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	641,466	0.25%	—	Jun 30, 2026	iShares Trust, not summed
6.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	358,257	0.14%	—	Jun 30, 2026	Quantitative Master Series LLC, not summed
6.5	iShares Russell Small/Mid-Cap Index Fund Fund S000050373 · Registered fund · Jul 31, 2026 BlackRock Funds, not summed	36,412	0.01%	—	Jul 31, 2026	BlackRock Funds, not summed
7	ADAGE CAPITAL PARTNERS GP, L.L.C. 13F CIK 1165408 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	10,650,000	4.09%	+10,650,000	Jun 30, 2026	carried, not yet filed for the newest quarter
8	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,884,550	3.41%	+1,372,699	Jun 30, 2026	carried, not yet filed for the newest quarter
9	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,047,045	3.09%	+1,991,422	Jun 30, 2026	carried, not yet filed for the newest quarter
10	BARCLAYS PLC 13F CIK 312069 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	7,399,092	2.84%	+1,724,091	Jun 30, 2026	carried, not yet filed for the newest quarter
11	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	6,872,171	2.64%	+1,361,917	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
12	Warburg Pincus & Company US, LLC. 13G CIK 1658788 · Unknown · Jun 30, 2025 Rule 13d-1(c), passive investor	5,474,165	2.10%	-23,471,478	Jun 30, 2025	Rule 13d-1(c), passive investor
13	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,616,412	1.77%	+1,115,508	Jun 30, 2026	carried, not yet filed for the newest quarter
14	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,575,428	1.76%	+2,583,066	Jun 30, 2026	carried, not yet filed for the newest quarter
15	McKinney Paul D. Insider CIK 1622419 · Jun 15, 2026 Director, CEO and Chairman of the Board, issuer-wide	4,158,463	1.60%	+50,000	Jun 15, 2026	Director, CEO and Chairman of the Board, issuer-wide
16	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,117,089	1.58%	+2,496,839	Jun 30, 2026	carried, not yet filed for the newest quarter
17	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,558,834	1.37%	+1,048,737	Jun 30, 2026	carried, not yet filed for the newest quarter
18	CDC Financial, Inc. 13F CIK 2077836 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,539,562	1.36%	+80,000	Jun 30, 2026	carried, not yet filed for the newest quarter
19	VANGUARD ENERGY INDEX FUND Fund S000004448 · Registered fund · May 31, 2026 VANGUARD WORLD FUND, not summed	3,417,820	1.31%	+463,252	May 31, 2026	VANGUARD WORLD FUND, not summed
20	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	3,098,584	1.19%	-199,985	Jun 30, 2026	carried, not yet filed for the newest quarter
21	Connor, Clark & Lunn Investment Management Ltd. 13F CIK 1596800 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,922,388	1.12%	+293,446	Jun 30, 2026	carried, not yet filed for the newest quarter
22	FIRST TRUST ADVISORS LP 13F CIK 1125816 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,712,989	1.04%	+2,712,989	Jun 30, 2026	carried, not yet filed for the newest quarter
22.1	First Trust Natural Gas ETF Fund S000017177 · Registered fund · Jun 30, 2026 First Trust Exchange-Traded Fund, not summed	2,712,989	1.04%	—	Jun 30, 2026	First Trust Exchange-Traded Fund, not summed
23	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	2,509,052	0.96%	+1,702,965	Jun 30, 2026	carried, not yet filed for the newest quarter
23.1	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	4,838	0.00%	—	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
24	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,166,848	0.83%	+309,046	Jun 30, 2026	carried, not yet filed for the newest quarter
24.1	Omni Small-Cap Value Fund Fund S000033567 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	565,766	0.22%	+167,500	Jun 30, 2026	Bridgeway Funds, Inc., not summed
24.2	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	321,254	0.12%	+52,604	Jun 30, 2026	Bridgeway Funds, Inc., not summed
25	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,786,069	0.69%	+50,235	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
26	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,488,104	0.57%	+312,172	Jun 30, 2026	carried, not yet filed for the newest quarter
26.1	Goldman Sachs High Yield Floating Rate Fund Fund S000029320 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	1,029,922	0.40%	—	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
26.2	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	14,851	0.01%	—	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
27	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,486,707	0.57%	+1,138,935	Jun 30, 2026	carried, not yet filed for the newest quarter
27.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	99,815	0.04%	—	Jun 30, 2026	Northern Funds, not summed
28	Nierenberg Investment Management Company, LLC 13F CIK 1282683 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,399,555	0.54%	+1,399,555	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Empowered Funds, LLC 13F CIK 1592828 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,256,228	0.48%	+88,942	Jun 30, 2026	carried, not yet filed for the newest quarter
29.1	EA Bridgeway Omni Small-Cap Value ETF Fund S000078089 · Registered fund · Jun 30, 2026 EA Series Trust, not summed	1,256,228	0.48%	+88,942	Jun 30, 2026	EA Series Trust, not summed
30	Dyes Alexander Insider CIK 1837536 · Feb 17, 2026 EVP Chief Operations Officer, issuer-wide	1,239,290	0.48%	+391,178	Feb 17, 2026	EVP Chief Operations Officer, issuer-wide
31	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,142,143	0.44%	+151,384	Jun 30, 2026	carried, not yet filed for the newest quarter
32	De Lisle Partners LLP 13F CIK 2011184 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	1,129,569	0.43%	+435,608	Jun 30, 2026	carried, not yet filed for the newest quarter
33	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,121,003	0.43%	+438,639	Jun 30, 2026	carried, not yet filed for the newest quarter
34	PLUSTICK MANAGEMENT LLC 13F CIK 1643351 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,000,000	0.38%	+1,000,000	Jun 30, 2026	carried, not yet filed for the newest quarter
35	SEGALL BRYANT & HAMILL, LLC 13F CIK 1006378 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	937,046	0.36%	+937,046	Jun 30, 2026	carried, not yet filed for the newest quarter
36	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	902,106	0.35%	-2,197,891	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Petrelli Anthony Benedict Insider CIK 1354750 · Feb 17, 2026 Director, issuer-wide	894,373	0.34%	+119,048	Feb 17, 2026	Director, issuer-wide
38	Thomas Travis Insider CIK 1857253 · Feb 16, 2025 EVP, Chief Financial Officer, issuer-wide	767,653	0.29%	-7,313	Feb 16, 2025	EVP, Chief Financial Officer, issuer-wide
39	VICTORY CAPITAL MANAGEMENT INC 13F CIK 1040188 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	757,930	0.29%	+737,491	Jun 30, 2026	carried, not yet filed for the newest quarter
39.1	VictoryShares Small Cap Free Cash Flow ETF Fund S000080690 · Registered fund · Jun 30, 2026 Victory Portfolios II, not summed	731,990	0.28%	+221,510	Jun 30, 2026	Victory Portfolios II, not summed
39.2	Victory Extended Market Index Fund Fund S000012941 · Registered fund · Jul 31, 2026 Victory Portfolios III, not summed	26,353	0.01%	+5,914	Jul 31, 2026	Victory Portfolios III, not summed
40	Alyeska Investment Group, L.P. 13F CIK 1453072 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	714,423	0.27%	+714,423	Jun 30, 2026	carried, not yet filed for the newest quarter
41	CRUM JOHN A Insider CIK 1240204 · Feb 17, 2026 Director, issuer-wide	683,173	0.26%	+119,048	Feb 17, 2026	Director, issuer-wide
42	MITCHELL THOMAS L Insider CIK 1250243 · Feb 17, 2026 Director, issuer-wide	583,173	0.22%	+119,048	Feb 17, 2026	Director, issuer-wide
43	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	562,370	0.22%	+465,329	Jun 30, 2026	carried, not yet filed for the newest quarter
43.1	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	465,107	0.18%	—	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
43.2	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	96,457	0.04%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
44	Johl Sundip Singh Insider CIK 2111739 · Jun 15, 2026 EVP, Chief Financial Officer, issuer-wide	548,460	0.21%	+231,000	Jun 15, 2026	EVP, Chief Financial Officer, issuer-wide
45	Parr James J. Insider CIK 2046193 · Feb 17, 2026 EVP, Chief Exploration Officer, issuer-wide	547,348	0.21%	+317,460	Feb 17, 2026	EVP, Chief Exploration Officer, issuer-wide
46	Invesco Ltd. 13F CIK 914208 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	536,937	0.21%	+137,381	Jun 30, 2026	carried, not yet filed for the newest quarter
46.1	Invesco RAFI US 1500 Small-Mid ETF Fund S000013120 · Registered fund · Jul 31, 2026 Invesco Exchange-Traded Fund Trust, not summed	435,520	0.17%	+36,174	Jul 31, 2026	Invesco Exchange-Traded Fund Trust, not summed
47	SUSQUEHANNA INTERNATIONAL GROUP, LLP 13F CIK 1446194 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	526,740	0.20%	-2,523,219	Jun 30, 2026	carried, not yet filed for the newest quarter
48	HARRIS RICHARD E Insider CIK 1244730 · Feb 17, 2026 Director, issuer-wide	505,773	0.19%	+119,048	Feb 17, 2026	Director, issuer-wide
49	AMERICAN CENTURY COMPANIES INC 13F CIK 748054 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	502,169	0.19%	+502,169	Jun 30, 2026	carried, not yet filed for the newest quarter
50	RBF Capital, LLC 13F CIK 1134621 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	500,000	0.19%	-407,417	Jun 30, 2026	carried, not yet filed for the newest quarter

2 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 218 holders

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Key facts CIK 1384195 CUSIP 76680V108 13F (30d) 20 filings 20 filers Visit website Investor relations