Magnolia Oil & Gas Corporation
US ˙ NYSE ˙ US5596631094

SecurityMGY / Magnolia Oil & Gas Corporation
InstitutionRitholtz Wealth Management
Latest Disclosed Ownership15,994 shares
Latest Disclosed Value $ 504,921
Ritholtz Wealth Management reports 33.77% increase in ownership of MGY / Magnolia Oil & Gas Corporation

On April 20, 2026 - Ritholtz Wealth Management filed a 13F-HR form disclosing ownership of 15,994 shares of Magnolia Oil & Gas Corporation (US:MGY) valued at $504,931 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 11,956 shares of Magnolia Oil & Gas Corporation. This represents a change in shares of 33.77% during the quarter. The current value of the position is $439,995 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-20 2026-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 15,994 4,038 33.77 505 93.10 0.0088
2026-01-23 2025-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 11,956 -5,566 -31.77 262 -37.56 0.0048
2025-10-28 2025-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 17,522 1,304 8.04 418 14.84 0.0081
2025-07-28 2025-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 16,218 16,218 365 0.0080
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.