# MAGNITE INC (MGNI) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 55955D100
Page URL: https://superinvestorclub.com/stock/MGNI
Last updated: 2026-08-29T13:48:43.843Z

## Summary

As of the most recent 13F filing period, MAGNITE INC (MGNI) is held by 1 tracked superinvestors with an aggregate position value of $25.5M representing 01341576 shares.

## Top institutional holders (1)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [First Eagle](https://superinvestorclub.com/manager/21222) | First Eagle Investment Management | 1341576 | $25.5M | 0.02% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-06-30: 1 holders, $5.6M aggregate, 0407777 shares
- 2023-09-30: 1 holders, $1.7M aggregate, 0225379 shares
- 2024-12-31: 1 holders, $5.8M aggregate, 0367157 shares
- 2025-03-31: 1 holders, $5.7M aggregate, 0495657 shares
- 2025-06-30: 2 holders, $15.2M aggregate, 061811910000 shares
- 2025-09-30: 2 holders, $15.7M aggregate, 0575443145671 shares
- 2025-12-31: 2 holders, $7.2M aggregate, 0296443145187 shares
- 2026-03-31: 1 holders, $5.3M aggregate, 0450288 shares
- 2026-06-30: 1 holders, $25.5M aggregate, 01341576 shares

## Recent congressional trades (0)


## Recent insider transactions (0)


## Citation

When citing, use: "MAGNITE INC (MGNI) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/MGNI), aggregating SEC 13F, Form 4, and congressional disclosures."