How many institutions held MGY - Magnolia Oil & Gas Corp - Class A Common Stock, par value $0.0001 in Q1 2021?

187 institutional investors reported MGY - Magnolia Oil & Gas Corp - Class A Common Stock, par value $0.0001 for Q1 2021. Use the holders table for investor-level position and value details.

Magnolia Oil & Gas Corp - Class A Common Stock, par value $0.0001 (MGY)

Q: What does CUSIP 559663109 represent in this 13F holders report?

CUSIP 559663109 is the security identifier for MGY - Magnolia Oil & Gas Corp - Class A Common Stock, par value $0.0001 used to aggregate holder disclosures.

CUSIP: 559663109

Q1 2021 13F Holders as of 31 Mar 2021

Security type / class: Equity / Class A Common Stock, par value $0.0001
Total 13F shares: 180,082,550
Total 13F value: $2,067,269,372
Share change: +3,071,250
Put/Call ratio: 70%
SEC-reported price per share: $11.48
Number of holders: 187
Value change: +$77,051,237
Number of buys: 109
Number of sells: 82
Shares outstanding: 269,255,853

Security key

559663109

Report period

Q1 2021

Institutions

187

Top holders

MGY full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 Magnolia Oil & Gas Corp SEC filings Magnolia Oil & Gas Corp company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 559663109

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of MGY - Magnolia Oil & Gas Corp - Class A Common Stock, par value $0.0001 (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

EnerVest, Ltd.

Disclosed value leader

EnerVest, Ltd.

Comparable rows

0/15

Latest evidence

31 Dec 2020

13F Highest disclosed value: $246,310,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

EnerVest, Ltd. has the largest disclosed position value at $246.31M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens EnerVest, Ltd.'s linked filing trail.

Disclosed position value Top 5

EnerVest, Ltd. $246.31M

PRICE T ROWE ASSOCIATES INC /MD/ $130.46M

FMR LLC $102.73M

VANGUARD GROUP INC $86.11M

BlackRock Finance, Inc. $72.51M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
EnerVest, Ltd.	13F Company 13F	— denominator unverified	$246,310,000 34,888,068 shares	—	31 Dec 2020
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	— denominator unverified	$130,462,000 18,479,052 shares	—	31 Dec 2020
FMR LLC	13F Company 13F	— denominator unverified	$102,732,000 14,551,420 shares	—	31 Dec 2020
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$86,110,000 12,196,791 shares	—	31 Dec 2020
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$72,511,000 10,270,586 shares	—	31 Dec 2020
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	— denominator unverified	$63,202,000 8,952,156 shares	—	31 Dec 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

187

180,082,550

Rows available

187

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2021 vs Q1 2021 Across Filers

Q1 2021 holders

187

Q1 2021 holders

187

Holder diff

Investor	Q1 2021 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q1 2021 value	Q1 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend