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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 %
GEA
276
Glen Eagle Advisors
New Jersey
$1.18K – – –
HFS
277
Hughes Financial Services
Virginia
$1.15K +$1.15K +51 New
AW
278
Avion Wealth
Texas
$1K +$1K +49 New
FDCDDQ
279
Federation des caisses Desjardins du Quebec
Quebec, Canada
$965 -$434 -18 -31%
SPIA
280
Steward Partners Investment Advisory
New York
$965 +$965 +40 New
TWC
281
TD Waterhouse Canada
Ontario, Canada
$603 +$603 +25 New
TCM
282
Tradewinds Capital Management
Washington
$483 – – –
AssetMark Inc
283
AssetMark Inc
California
$434 +$434 +18 New
DFA
284
DHJJ Financial Advisors
Illinois
$314 – – –
AA
285
Ancora Advisors
Ohio
$265 +$265 +11 New
Qube Research & Technologies (QRT)
286
Qube Research & Technologies (QRT)
United Kingdom
– -$11.8M -1,038,131 Closed
IECM
287
Intrinsic Edge Capital Management
Illinois
– -$8.36M -733,044 Closed
GIP
288
Granite Investment Partners
California
– -$8.23M -720,873 Closed
Millennium Management
289
Millennium Management
New York
– -$4.96M -434,479 Closed
AC
290
Armistice Capital
New York
– -$4.44M -389,000 Closed
SFI
291
Susquehanna Fundamental Investments
Pennsylvania
– -$2.06M -180,463 Closed
XT
292
XTX Topco
Cayman Islands
– -$1.54M -135,118 Closed
Squarepoint
293
Squarepoint
New York
– -$1.41M -123,786 Closed
DTL
294
Dynamic Technology Lab
Singapore
– -$1.37M -120,258 Closed
State of New Jersey Common Pension Fund D
295
State of New Jersey Common Pension Fund D
New Jersey
– -$1.25M -109,356 Closed
PEAK6
296
PEAK6
Illinois
– -$1.18M -103,167 Closed
RP
297
Riverwater Partners
Wisconsin
– -$960K -84,179 Closed
AMC
298
Atlas Merchant Capital
New York
– -$941K -82,500 Closed
FRM
299
Fox Run Management
Connecticut
– -$881K -77,223 Closed
CIBC World Market
300
CIBC World Market
Ontario, Canada
– -$748K -65,543 Closed
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