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Magnite
MGNI

Overview Fund Activity

284 hedge funds and large institutions have $3.54B invested in Magnite in 2025 Q2 according to their latest regulatory filings, with 54 funds opening new positions, 101 increasing their positions, 95 reducing their positions, and 57 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
284
Holders Change
-6
Holders Change %
-2.07%
% of All Funds
3.81%
Holding in Top 10
16
Holding in Top 10 Change
+9
Holding in Top 10 Change %
+128.57%
% of All Funds
0.21%
New
54
Increased
101
Reduced
95
Closed
57
Calls
$118M
Puts
$100M
Net Calls
+$17.5M
Net Calls Change
+$26M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
$415M
2
SSA
Schonfeld Strategic Advisors
New York
$45.8M
3
American Century Companies
American Century Companies
Missouri
$116M
4
FCM
Frontier Capital Management
Massachusetts
$43.3M
5
ACA
Apis Capital Advisors
New York
$25.3M

Top Sellers

1
Nordea Investment Management
Nordea Investment Management
Sweden
$7.94M
2
Ameriprise
Ameriprise
Minnesota
$2.56M
3
Bank of America
Bank of America
North Carolina
$9.97M
4
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
$0
5
Wellington Management Group
Wellington Management Group
Massachusetts
$131M
Name Holding Trade Value Shares
Change 		Shares
Change %
CF
301
Corebridge Financial
Texas
– -$703K -61,638 Closed
IMC Chicago
302
IMC Chicago
Illinois
– -$452K -39,631 Closed
OC
303
Oppenheimer & Co
New York
– -$319K -27,925 Closed
Brown Advisory
304
Brown Advisory
Maryland
– -$290K -25,409 Closed
SRL
305
Scientech Research LLC
New Jersey
– -$273K -23,901 Closed
Jacobs Levy Equity Management
306
Jacobs Levy Equity Management
New Jersey
– -$224K -19,634 Closed
AC
307
AXQ Capital
New Jersey
– -$218K -19,092 Closed
BC
308
Bayforest Capital
United Kingdom
– -$203K -17,835 Closed
CIM
309
Contravisory Investment Management
Massachusetts
– -$193K -16,932 Closed
CAM
310
CenterStar Asset Management
Illinois
– -$192K -16,800 Closed
KAS
311
Kestra Advisory Services
Texas
– -$187K -16,375 Closed
BAM
312
Bosun Asset Management
Illinois
– -$186K -16,287 Closed
KI
313
Kapitalo Investimentos
Brazil
– -$182K -15,975 Closed
AIM
314
Aigen Investment Management
New York
– -$154K -13,535 Closed
Marshall Wace
315
Marshall Wace
United Kingdom
– -$154K -13,468 Closed
PFGIA
316
Patriot Financial Group Insurance Agency
Massachusetts
– -$128K -11,195 Closed
GCM
317
Graham Capital Management
Connecticut
– -$128K -11,182 Closed
AAS
318
Avantax Advisory Services
Texas
– -$124K -10,871 Closed
IB
319
Intrust Bank
Kansas
– -$119K -10,444 Closed
Walleye Trading
320
Walleye Trading
New York
– -$82.4K -7,220 Closed
QL
321
Quarry LP
New York
– -$21.4K -1,872 Closed
SSG
322
Summit Securities Group
New York
– -$15.6K -1,364 Closed
CIAM
323
Caitong International Asset Management
Hong Kong
– -$11.7K -1,028 Closed
YDMI
324
Y.D. More Investments
Israel
– -$9.13K -800 Closed
CCM
325
Coldstream Capital Management
Washington
– -$9.05K -793 Closed
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