MGY · Magnolia Oil & Gas Corp · Shareholders & Ownership
Every disclosed holder of MGY 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.
Who Owns MGY
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 208,838,017 | 88.13% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 35,614,306 | 15.03% |
| Remaining | 7,483,731 | -3.16% |
| Registered funds (N-PORT, not summed) | 121,032,989 | 51.08% |
Shares outstanding: 236,968,592, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
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 MGY
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
32,203,000 | ||
| 1.1 |
|
32,203,000 | ||
| 2 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
31,972,219 | ||
| 2.1 |
iShares Core S&P Small-Cap ETF
Fund
S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
11,142,411 | ||
| 2.2 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
4,776,164 | ||
| 2.3 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,717,650 | ||
| 2.4 |
iShares S&P Small-Cap 600 Value ETF
Fund
S000004316 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,592,177 | ||
| 2.5 |
BlackRock Advantage Small Cap Core Fund
Fund
S000039982 · Registered fund · May 29, 2026
BlackRock Funds, not summed
|
817,298 | ||
| 3 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
15,341,201 | ||
| 3.1 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13G
CIK 2100121 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
15,517,234 | ||
| 4 |
AMERICAN CENTURY COMPANIES INC
13F
CIK 748054 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
11,011,458 | ||
| 4.1 |
Small Cap Value Fund
Fund
S000005781 · Registered fund · Jun 30, 2026
American Century Capital Portfolios, Inc., not summed
|
1,775,000 | ||
| 4.2 |
Small Cap Dividend Fund
Fund
S000075489 · Registered fund · Jun 30, 2026
American Century Capital Portfolios, Inc., not summed
|
48,256 | ||
| 5 |
|
9,941,466 | ||
| 5.1 |
State Street(R) SPDR(R) S&P(R) Oil & Gas Exploration & Production ETF
Fund
S000012319 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
2,847,539 | ||
| 5.2 |
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund
S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
1,693,525 | ||
| 5.3 |
State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF
Fund
S000006974 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
957,691 | ||
| 5.4 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
64,100 | ||
| 5.5 |
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Fund
S000006973 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
37,127 | ||
| 6 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,663,263 | ||
| 7 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,117,449 | ||
| 7.1 |
U.S. Targeted Value Portfolio
Fund
S000000970 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
1,273,689 | ||
| 7.2 |
Dimensional U.S. Targeted Value ETF
Fund
S000070901 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
1,136,528 | ||
| 7.3 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
767,140 | ||
| 7.4 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
719,063 | ||
| 7.5 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
445,985 | ||
| 8 |
Jupiter Topco LLC
13F
CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,427,893 | ||
| 8.1 |
Janus Henderson Small Cap Value Fund
Fund
S000010480 · Registered fund · Jun 30, 2026
Janus Investment Fund, not summed
|
941,959 | ||
| 8.2 |
Janus Henderson Small-Mid Cap Value Fund
Fund
S000035097 · Registered fund · Jun 30, 2026
Janus Investment Fund, not summed
|
74,975 | ||
| 9 |
Avantis U.S. Small Cap Value ETF
Fund
S000066459 · Registered fund · May 31, 2026
American Century ETF Trust, not summed
|
6,327,650 | ||
| 10 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
5,872,069 | ||
| 11 |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F
CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,463,526 | ||
| 12 |
T. Rowe Price Investment Management, Inc.
13F
CIK 1897612 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,180,518 | ||
| 13 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,802,973 | ||
| 14 |
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
13F
CIK 921739 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,311,973 | ||
| 14.1 |
Nomura Small Cap Core Fund
Fund
S000002400 · Registered fund · May 29, 2026
Delaware Group Equity Funds V, not summed
|
2,010,862 | ||
| 14.2 |
Nomura Small Cap Value Fund
Fund
S000002401 · Registered fund · May 29, 2026
Delaware Group Equity Funds V, not summed
|
1,275,240 | ||
| 14.3 |
Nomura VIP Small Cap Value Series
Fund
S000002475 · Registered fund · Jun 30, 2026
Delaware VIP Trust, not summed
|
566,200 | ||
| 15 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,253,346 | ||
| 16 |
VANGUARD SMALL-CAP INDEX FUND
Fund
S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
4,242,492 | ||
| 17 |
ALLIANCEBERNSTEIN L.P.
13F
CIK 1109448 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,122,434 | ||
| 17.1 |
AB Discovery Value Fund
Fund
S000010412 · Registered fund · Jun 30, 2026
AB TRUST, not summed
|
805,472 | ||
| 17.2 |
AB Discovery Value Portfolio
Fund
S000010436 · Registered fund · Jun 30, 2026
AB VARIABLE PRODUCTS SERIES FUND, INC., not summed
|
245,176 | ||
| 17.3 |
AB Small Cap Value Portfolio
Fund
S000045542 · Registered fund · Jun 30, 2026
AB CAP FUND, INC., not summed
|
236,763 | ||
| 17.4 |
Small Cap Core Portfolio
Fund
S000051867 · Registered fund · Jun 30, 2026
Bernstein Fund Inc, not summed
|
198,115 | ||
| 17.5 |
Tax-Aware Overlay A Portfolio
Fund
S000027648 · Registered fund · Jun 30, 2026
BERNSTEIN SANFORD C FUND INC, not summed
|
8,056 | ||
| 18 |
TD Asset Management Inc
13F
CIK 1056053 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,934,160 | ||
| 19 |
Epoch Investment Partners, Inc.
13F
CIK 1305841 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,569,975 | ||
| 20 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,429,471 | ||
| 20.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
126 | ||
| 21 |
First Trust Portfolios L.P.
13G
CIK 1184765 · Unknown · Mar 31, 2025
Rule 13d-1(b), qualified institution
|
3,411,306 | ||
| 22 |
VICTORY CAPITAL MANAGEMENT INC
13F
CIK 1040188 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,982,883 | ||
| 22.1 |
Victory Sycamore Small Company Opportunity Fund
Fund
S000000800 · Registered fund · Jun 30, 2026
Victory Portfolios, not summed
|
1,810,000 | ||
| 22.2 |
VictoryShares Small Cap Free Cash Flow ETF
Fund
S000080690 · Registered fund · Jun 30, 2026
Victory Portfolios II, not summed
|
189,783 | ||
| 22.3 |
Victory Market Neutral Income Fund
Fund
S000037769 · Registered fund · Jun 30, 2026
Victory Portfolios II, not summed
|
176,645 | ||
| 22.4 |
VictoryShares US Small Cap High Div Volatility Wtd ETF
Fund
S000049908 · Registered fund · Jun 30, 2026
Victory Portfolios II, not summed
|
88,363 | ||
| 22.5 |
Victory Small Cap Stock Fund
Fund
S000012914 · Registered fund · Jul 31, 2026
Victory Portfolios III, not summed
|
73,541 | ||
| 23 |
VANGUARD EQUITY INCOME FUND
Fund
S000002579 · Registered fund · Jun 30, 2026
VANGUARD FENWAY FUNDS, not summed
|
2,917,675 | ||
| 24 |
GW&K Investment Management, LLC
13F
CIK 1082917 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,917,419 | ||
| 25 |
SYSTEMATIC FINANCIAL MANAGEMENT LP
13F
CIK 1085936 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,777,352 | ||
| 26 |
Allspring Global Investments Holdings, LLC
13F
CIK 1890906 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,667,136 | ||
| 26.1 |
Allspring Special Small Cap Value Fund
Fund
S000029108 · Registered fund · Jun 30, 2026
ALLSPRING FUNDS TRUST, not summed
|
1,650,717 | ||
| 26.2 |
Allspring Small Company Value Portfolio
Fund
S000007553 · Registered fund · Jul 31, 2026
ALLSPRING MASTER TRUST, not summed
|
250,965 | ||
| 27 |
WESTWOOD HOLDINGS GROUP INC
13F
CIK 1165002 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,642,440 | ||
| 28 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,618,204 | ||
| 28.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
868,484 | ||
| 28.2 |
Schwab Fundamental U.S. Small Company ETF
Fund
S000040878 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
654,057 | ||
| 28.3 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
564,787 | ||
| 28.4 |
Schwab Fundamental U.S. Small Company Index Fund
Fund
S000016767 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
186,564 | ||
| 28.5 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
139,579 | ||
| 29 |
Janus Henderson Triton Fund
Fund
S000010485 · Registered fund · Jun 30, 2026
Janus Investment Fund, not summed
|
2,609,112 | ||
| 30 |
SILVERCREST ASSET MANAGEMENT GROUP LLC
13F
CIK 1232395 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,537,333 | ||
| 31 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,406,168 | ||
| 31.1 |
Goldman Sachs Small Cap Value Fund
Fund
S000009323 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
|
270,155 | ||
| 31.2 |
Goldman Sachs Small Cap Equity Insights Fund
Fund
S000009329 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
168,449 | ||
| 31.3 |
Goldman Sachs Small Cap Value Insights Fund
Fund
S000014929 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
154,220 | ||
| 31.4 |
Goldman Sachs Small Cap Growth Insights Fund
Fund
S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
75,957 | ||
| 31.5 |
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund
S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
48,597 | ||
| 32 |
Boston Trust Walden Corp
13F
CIK 1534866 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,384,760 | ||
| 33 |
|
2,228,804 | ||
| 33.1 |
Nuveen Quant Small Cap Equity Fund
Fund
S000005386 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
493,760 | ||
| 33.2 |
College Retirement Equities Fund - Total Global Stock Account
Fund
S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
|
491,583 | ||
| 33.3 |
Nuveen Small Cap Blend Index Fund
Fund
S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
303,152 | ||
| 33.4 |
Nuveen Quant Small/Mid Cap Equity Fund
Fund
S000054623 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
262,080 | ||
| 33.5 |
Nuveen Small Cap Value Fund
Fund
S000005570 · Registered fund · Jul 31, 2026
Nuveen Investment Funds, Inc., not summed
|
193,183 | ||
| 34 |
Stephens Investment Management Group LLC
13F
CIK 1314440 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,219,966 | ||
| 35 |
DEPRINCE RACE & ZOLLO INC
13F
CIK 1008894 · Registered investment adviser · Sep 30, 2026
|
2,115,127 | ||
| 36 |
LOOMIS SAYLES & CO L P
13F
CIK 312348 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,065,051 | ||
| 36.1 |
Loomis Sayles Small Cap Growth Fund
Fund
S000006705 · Registered fund · Jun 30, 2026
LOOMIS SAYLES FUNDS II, not summed
|
717,570 | ||
| 36.2 |
Loomis Sayles Small/Mid Cap Growth Fund
Fund
S000049859 · Registered fund · Jun 30, 2026
LOOMIS SAYLES FUNDS II, not summed
|
98,316 | ||
| 37 |
Reaves Utility Income Fund
Fund
· Registered fund · Jul 31, 2026
Reaves Utility Income Fund, not summed
|
2,025,000 | ||
| 37.1 |
Nuveen S&P 500 Dynamic Overwrite Fund
Fund
· Registered fund · Jun 30, 2026
Nuveen S&P 500 Dynamic Overwrite Fund, not summed
|
8,505 | ||
| 38 |
Bank of New York Mellon Corp
13F
CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,944,363 | ||
| 38.1 |
BNY Mellon US Small Cap Core Equity ETF
Fund
S000067262 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
|
7,233 | ||
| 39 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,894,970 | ||
| 39.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
93,869 | ||
| 39.2 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
47,874 | ||
| 39.3 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
18,841 | ||
| 40 |
MANUFACTURERS LIFE INSURANCE COMPANY, THE
13F
CIK 928047 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,857,192 | ||
| 40.1 |
Small Cap Core Fund
Fund
S000043450 · Registered fund · Jul 31, 2026
John Hancock Investment Trust, not summed
|
1,280,550 | ||
| 40.2 |
John Hancock Multifactor Small Cap ETF
Fund
S000059464 · Registered fund · Jun 30, 2026
John Hancock Exchange-Traded Fund Trust, not summed
|
71,392 | ||
| 41 |
PRICE T ROWE ASSOCIATES INC /MD/
13F
CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,713,122 | ||
| 41.1 |
T. Rowe Price Small-Cap Value Fund, Inc.
Fund
S000002121 · Registered fund · Jun 30, 2026
T. ROWE PRICE SMALL-CAP VALUE FUND, INC., not summed
|
2,191,474 | ||
| 41.2 |
T. Rowe Price New Horizons Fund, Inc.
Fund
S000002106 · Registered fund · Jun 30, 2026
T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
|
946,800 | ||
| 41.3 |
T. Rowe Price Small-Cap Stock Fund, Inc.
Fund
S000002120 · Registered fund · Jun 30, 2026
T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed
|
520,165 | ||
| 41.4 |
T. Rowe Price Institutional Small-Cap Stock Fund
Fund
S000002094 · Registered fund · Jun 30, 2026
T. Rowe Price Equity Funds, Inc., not summed
|
271,243 | ||
| 41.5 |
T. Rowe Price Extended Equity Market Index Fund
Fund
S000002090 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
|
28,971 | ||
| 42 |
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/
13F
CIK 1009016 · Unknown · Sep 30, 2026
|
1,711,173 | ||
| 43 |
|
1,503,941 | ||
| 44 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,432,736 | ||
| 45 |
VANGUARD EXPLORER FUND
Fund
S000002578 · Registered fund · Jul 31, 2026
VANGUARD EXPLORER FUND, not summed
|
1,421,183 | ||
| 46 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,416,670 | ||
| 47 |
VANGUARD SMALL-CAP VALUE INDEX FUND
Fund
S000002847 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,343,441 | ||
| 48 |
BESSEMER GROUP INC
13F
CIK 1054074 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,334,098 | ||
| 48.1 |
Old Westbury Small & Mid Cap Strategies Fund
Fund
S000001857 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
|
870,210 | ||
| 48.2 |
Old Westbury Total Equity Fund
Fund
S000090405 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
|
35,987 | ||
| 49 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,330,499 | ||
| 50 |
RENAISSANCE TECHNOLOGIES LLC
13F
CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,296,902 |
62 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 613 holders
Create a free account to page through every holder, filter by source and group by ultimate parent.