Skip to main content
MGY logo

MGY · Magnolia Oil & Gas Corp · Shareholders & Ownership

Track MGY — free
$25.36 -0.08 (-0.29%)
Market Cap
$6.03B
Shares
236.97M
Volume · Oct 22 764.18K Avg daily vol (3M) 4.56M

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 positions

No 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
1
WildFire Energy I LLC
13G CIK 2153177 · Unknown · Sep 10, 2026
Rule 13d-1(c), passive investor
32,203,000
1.1
WildFire Energy I LLC
Insider CIK 2153177 · Sep 10, 2026
10% Owner, issuer-wide, not summed
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
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
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
Nuveen, LLC
13F CIK 1871926 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
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
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
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.

Key facts CIK 1698990 CUSIP 559663109 13F (30d) 47 filings 47 filers Visit website Investor relations