Aventail Capital Group, LP MGY — MAGNOLIA OIL & GAS CORP

Ownership history in Aventail Capital Group, LP  ·  14 quarters on record

AI Ownership Summary

Aventail Capital Group, LP reported MAGNOLIA OIL & GAS CORP (MGY) in 14 quarterly 13F filings from 2023 Q4 through 2025 Q3. Peak portfolio weight reached 1.84% in 2024 Q2. The latest visible filing shows MGY at 0.44% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this MGY ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Aventail Capital Group, LP's position in MAGNOLIA OIL & GAS CORP, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q3

MGY was reported at 0.44% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.84% in 2024 Q2

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2025 Q3

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

MGY stock page Aventail Capital Group, LP fund profile Aventail Capital Group, LP full holdings
How Aventail Capital Group, LP held MGY — position size vs. price
% of Fund (quarterly)    MGY price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 7 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q3 ADDED — — — 400,928 +82 +0.0% 0.44% $9.6M 2025-11-14 $22.73
2025 Q2 ADDED — — — 400,846 +846 +0.2% 0.40% $9.0M 2025-08-14 $23.36
2025 Q1 UNCHANGED — — — 400,000 — 0% 0.50% $10.1M 2025-05-15 $22.20
2024 Q4 REDUCED — — — 400,000 -18,936 -4.5% 0.48% $9.4M 2025-02-14 $22.76
2024 Q3 REDUCED 59.6% -4.3% ✅ 418,936 -618,436 -59.6% 0.60% $10.2M 2024-11-14 $26.21
2024 Q2 ADDED — — — 1,037,372 +173,528 +20.1% 1.84% $26.3M 2024-08-14 $23.75
2023 Q4 ADDED — — — 863,844 +713,844 +475.9% 1.56% $18.4M 2024-02-14 $19.23
7 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding MGY

As of 2026 Q1 — sorted by position size

Ritter Alpha, LP 5.58% Corigliano Investment Advisers, LLC 4.91% SIR Capital Management, L.P. 3Y 7Y 2.51% October Effect Ltd 2.13% SYSTEMATIC FINANCIAL MANAGEMENT LP 3Y 7Y 2.04% ALBERT D MASON INC 3Y 7Y 1.27% Mitsubishi UFJ Asset Management (UK) Ltd. 3Y 7Y 1.17% MOODY ALDRICH PARTNERS LLC 3Y 7Y 1.1% Bosman Wealth Management, LLC 1.08% HEARTLAND ADVISORS INC 3Y 7Y 1.02%

FAQ About Aventail Capital Group, LP and MGY

These are the practical questions this page is built to answer before you even open the full history table.

How long has Aventail Capital Group, LP reported owning MGY?

Aventail Capital Group, LP reported MGY across 7 quarterly 13F filings, from 2023 Q4 through 2025 Q3.

What was the largest reported MGY position in Aventail Capital Group, LP's portfolio?

The largest reported portfolio weight for MGY was 1.84% in 2024 Q2.

What is the latest reported MGY position on this page?

The most recent filing on this page is 2025 Q3, when Aventail Capital Group, LP reported 400,928 shares, equal to 0.44% of portfolio, with an estimated market value of $9.6M.

What does the chart on this MGY ownership page compare?

The chart compares Aventail Capital Group, LP's quarterly MGY portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did Aventail Capital Group, LP time their MGY position?

Based on 13F filing dates vs. subsequent MGY price moves, Aventail Capital Group, LP correctly timed 7 out of 11 reported position changes (64%). The annualised alpha on MGY relative to SPY over the holding period was +7.3%.

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