Question 1

Does Vanguard Group own MGNI stock?

Accepted Answer

As of its last 13F, for Q4 2025, Vanguard Group held 14,802,630 shares of MGNI (Magnite), worth $240.2M.

Question 2

How many shares of MGNI does Vanguard Group own?

Accepted Answer

As of its last 13F, for Q4 2025, Vanguard Group held 14,802,630 shares of MGNI (Magnite).

Question 3

What is Vanguard Group's MGNI position worth?

Accepted Answer

As of its last 13F, for Q4 2025, Vanguard Group's MGNI position was worth $240.2M.

Question 4

Is Vanguard Group buying or selling MGNI?

Accepted Answer

In Q4 2025, Vanguard Group increased its MGNI position by 148,198 shares (+1.0%).

Question 5

When did Vanguard Group first buy MGNI?

Accepted Answer

Vanguard Group already held MGNI in its Q3 2024 13F, the earliest on record, and listed it in 6 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2025-Q4 Latest	Increased	14.8M	+1.0%	$240.2M	0.0%	$16.23	31
2025-Q3	Increased	14.7M	+8.1%	$319.2M	0.0%	$21.78	34
2025-Q2	Decreased	13.6M	-1.3%	$327.1M	0.0%	$24.12	0
2025-Q1	Increased	13.7M	+1.0%	$156.8M	0.0%	$11.41	31
2024-Q4	Increased	13.6M	+1.9%	$216.6M	0.0%	$15.92	31
2024-Q3	First report	13.3M	-	$184.9M	0.0%	$13.85	0

MGNI6 quarters

MGNI
6 quarters