MGNI icon

Magnite

308 hedge funds and large institutions have $3B invested in Magnite in 2025 Q3 according to their latest regulatory filings, with 69 funds opening new positions, 81 increasing their positions, 123 reducing their positions, and 41 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding

Funds holding:

less ownership

Funds ownership:

15% less capital invested

Capital invested by funds: $3.54B → $3B (-$540M)

31% less funds holding in top 10

Funds holding in top 10: 1611 (-5)

34% less repeat investments, than reductions

Existing positions increased: 81 | Existing positions reduced: 123

Holders
308
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
11
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$132M
Puts
$89.4M
Net Calls
Net Calls Change

Top Buyers

1 +$52.9M
2 +$27.5M
3 +$23.8M
4
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
+$19.4M
5
Morgan Stanley
Morgan Stanley
New York
+$19.1M

Top Sellers

1 -$129M
2 -$45.8M
3 -$32.7M
4
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
-$29.1M
5
UBS Group
UBS Group
Switzerland
-$28.5M