How many institutions held MGY - Magnolia Oil & Gas Corp - Class A Common Stock, par value $0.0001 in Q3 2026?

7 institutional investors reported MGY - Magnolia Oil & Gas Corp - Class A Common Stock, par value $0.0001 for Q3 2026. 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

Q3 2026 13F Holders as of 30 Sep 2026

Security type / class: Equity / Class A Common Stock, par value $0.0001
Total 13F shares: 62,452
Total 13F value: $1,467,001
Share change: +2,387
SEC-reported price per share: $23.49
Number of holders: 7
Value change: +$55,858
Number of buys: 2
Number of sells: 8
Shares outstanding: 269,255,853

Security key

559663109

Report period

Q3 2026

Institutions

Top holders

MGY full security history Ownership snapshot Full 13F holder table 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

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

BlackRock, Inc.

Disclosed value leader

WildFire Energy I LLC

Comparable rows

15/15

Latest evidence

10 Sep 2026

13F 13D/G 3/4/5 Lead comparable stake: 14% 13D/G row: BlackRock, Inc. Showing 1-6 of 15 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 14%.

15 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 BlackRock, Inc.'s linked filing trail.

Comparable ownership Top 5

BlackRock, Inc. 14%

WildFire Energy I LLC 12%

VANGUARD PORTFOLIO MANAGEMENT LLC 8.4%

STATE STREET CORP 5.1%

FIRST TRUST PORTFOLIOS LP 1.8%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

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

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	14% from 13D/G	$817,849,380 31,972,219 shares	—	30 Jun 2026
WildFire Energy I LLC	13D/G 3/4/5 10%+ Owner 13D/G 3/4/5	12%	$906,192,420 32,203,000 shares	$0	10 Sep 2026
VANGUARD PORTFOLIO MANAGEMENT LLC	13D/G 13F Vanguard Portfolio Management · Company 13D/G 13F	8.4%	$414,310,148 15,517,234 shares	+$65,324,914	30 Jun 2026
STATE STREET CORP	13D/G 13F STATE STREET CORPORATION · Company 13D/G 13F	5.1%	$281,944,405 9,496,275 shares	+$24,380,686	31 Mar 2026
FIRST TRUST PORTFOLIOS LP	13D/G First Trust Portfolios L.P. 13D/G	1.8%	$73,923,001 3,411,306 shares	-$335,308,470	31 Mar 2025
Hawkwood HoldCo GP, LLC	3/4/5 10%+ Owner 3/4/5	12%	$823,752,740 32,203,000 shares	—	10 Sep 2026

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 Q3 2026

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

Institutions

62,452

Rows available

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 Q3 2026 vs Q2 2026 Across Filers

Q2 2026 holders

409

Q3 2026 holders

Holder diff

-402

Investor	Q2 2026 Shares	Q3 2026 Shares	Share Diff	Share Chg %	Q2 2026 value	Q3 2026 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend