Maestria Partners LLC MGNI MAGNITE INC

Ownership history in Maestria Partners LLC  ·  6 quarters on record

AI Ownership Summary

Maestria Partners LLC reported MAGNITE INC (MGNI) in 6 quarterly 13F filings from 2024 Q4 through 2026 Q1. Peak portfolio weight reached 12.02% in 2025 Q2. The latest visible filing shows MGNI at 5.91% 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.

What this MGNI ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Maestria Partners LLC's position in MAGNITE INC, 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
2026 Q1

MGNI was reported at 5.91% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
12.02% in 2025 Q2

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

Time in book
Holding Window
2024 Q4 to 2026 Q1

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.

How Maestria Partners LLC held MGNI — position size vs. price
% of Fund (quarterly)    MGNI price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 6 quarters  
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 UNCHANGED 1,363,505 0% 5.91% $16.2M 2026-04-16 $13.64
2025 Q4 ADDED 1,363,505 +222,334 +19.5% 6.48% $22.1M 2026-02-11 $11.80
2025 Q3 REDUCED 20.4% -24.5% 1,141,171 -293,146 -20.4% 7.86% $24.9M 2025-10-31 $17.88
2025 Q2 ADDED 1,434,317 +382,000 +36.3% 12.02% $34.6M 2025-07-25 $23.52
2025 Q1 ADDED 1,052,317 +100,000 +10.5% 5.07% $12.0M 2025-05-06 $12.33
2024 Q4 INITIATED 952,317 6.01% $15.2M 2025-02-11 $20.22

FAQ About Maestria Partners LLC and MGNI

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

How long has Maestria Partners LLC reported owning MGNI?

Maestria Partners LLC reported MGNI across 6 quarterly 13F filings, from 2024 Q4 through 2026 Q1.

What was the largest reported MGNI position in Maestria Partners LLC's portfolio?

The largest reported portfolio weight for MGNI was 12.02% in 2025 Q2.

What is the latest reported MGNI position on this page?

The most recent filing on this page is 2026 Q1, when Maestria Partners LLC reported 1,363,505 shares, equal to 5.91% of portfolio, with an estimated market value of $16.2M.

What does the chart on this MGNI ownership page compare?

The chart compares Maestria Partners LLC's quarterly MGNI 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 Maestria Partners LLC time their MGNI position?

Based on 13F filing dates vs. subsequent MGNI price moves, Maestria Partners LLC correctly timed 3 out of 5 reported position changes (60%). The annualised alpha on MGNI relative to SPY over the holding period was -6.7%.

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