Question 1

How many shares of MGNI does FRONTIER CAPITAL MANAGEMENT CO LLC own?

Accepted Answer

FRONTIER CAPITAL MANAGEMENT CO LLC previously held 0 shares of MGNI (MAGNITE INC) before exiting the position in 2026-Q1.

Question 2

What is FRONTIER CAPITAL MANAGEMENT CO LLC's MGNI position worth?

Accepted Answer

FRONTIER CAPITAL MANAGEMENT CO LLC's MGNI position was last reported at $0 in 2026-Q1 before the exit.

Question 3

Is FRONTIER CAPITAL MANAGEMENT CO LLC buying or selling MGNI?

Accepted Answer

In 2026-Q1, FRONTIER CAPITAL MANAGEMENT CO LLC exited their MGNI position entirely (-100.0% change in shares).

Question 4

When did FRONTIER CAPITAL MANAGEMENT CO LLC first buy MGNI?

Accepted Answer

Based on available 13F filings, FRONTIER CAPITAL MANAGEMENT CO LLC first reported a position in MGNI in 2024-Q2. They have held the position across 13 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Exited	0	-100.0%	$0	0.0%	$13.77	0
2025-Q4	Decreased	944,701	-13.6%	$15.3M	0.2%	$16.46	0
2025-Q3	Decreased	1.1M	-39.1%	$23.8M	0.2%	$22.28	0
2025-Q2	Increased	1.8M	+419.4%	$43.3M	0.4%	$21.10	56
2025-Q1	Decreased	345,374	-46.6%	$3.9M	0.0%	$11.60	0
2024-Q4	Decreased	646,683	-0.2%	$10.3M	0.1%	$16.41	0
2024-Q3	Decreased	647,795	-0.8%	$9M	0.1%	$13.72	0
2024-Q2	Decreased	652,686	-1.1%	$8.7M	0.1%	$13.29	0

MGNIShowing 8 of 13 quarters

MGNI
Showing 8 of 13 quarters