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Magnite, Inc.

MGNI
Exchange
Nasdaq
Industry
Services-Computer Programming, Data Processing, Etc.
SEC CIK
0001595974

In the last 90 days, Magnite, Inc. insiders filed 0 open-market purchases and 24 sales; 311 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.

Q3 2021 vs. Q2 2021

How the institutions holding Magnite, Inc. changed between Q2 2021 and Q3 2021.

All holders in Q3 2021All holders in Q2 2021

13F holders of MGNI: Q2 2021 compared with Q3 2021
MeasureQ2 2021Of which not filed for Q3 2021Q3 2021Change
Holders2684279+15
Shares85.4M15.1K90.1M+4.77M (+5.6%)
Value$2.89B$511.0K$2.52B−$365.5M (−12.7%)

4 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (55)

Institutions that held Magnite, Inc. at the end of Q3 2021 but not at the end of Q2 2021.

Institutions new to MGNI in Q3 2021
InstitutionSharesValue% of portfolio
Hidden Lake Asset Management LP761,590$21.3M10.97%
Alta Park Capital, LP514,228$14.4M1.13%
Two Sigma Advisers, LP271,692$7.61M0.02%
Polar Asset Management Partners Inc.176,400$4.94M0.06%
Group One Trading, L.P.112,352$3.15M0.07%
FWL Investment Management, LLC94,402$2.64M1.66%
VisionPoint Advisory Group, LLC108,126$2.45M1.09%
Kennedy Capital Management, Inc.87,050$2.44M0.05%
Twinbeech Capital LP76,985$2.16M0.15%
Knights of Columbus Asset Advisors LLC68,570$1.92M0.17%
Old Mission Capital LLC68,355$1.91M0.09%
Renaissance Group LLC45,141$1.26M0.05%
Cannon Global Investment Management, LLC45,000$1.26M1.89%
Engineers Gate Manager LP44,215$1.24M0.07%
1492 Capital Management LLC37,521$1.05M0.54%
Oppenheimer & Co Inc32,200$902.0K0.02%
Virtu Financial LLC27,567$772.0K0.07%
Sphinx Trading, LP25,000$700.0K0.93%
Stony Point Wealth Management Inc.21,888$613.0K0.37%
First Republic Investment Management, Inc.20,726$580.0K0.00%
Kamunting Street Capital Management, L.P.18,767$525.0K0.29%
Concorde Asset Management, LLC18,230$510.0K0.29%
Two Sigma Securities, LLC16,815$471.0K0.10%
Pearl River Capital, LLC15,285$428.0K0.12%
First National Bank13,265$371.0K0.35%
Algert Global LLC11,964$335.0K0.04%
Seelaus Asset Management LLC11,305$317.0K0.19%
Point72 Hong Kong Ltd11,179$313.0K0.02%
Janus Henderson Group PLC11,109$311.0K0.00%
Essex Investment Management Co LLC9,049$253.0K0.03%
TownSquare Capital, LLC8,663$243.0K0.01%
Pictet Asset Management SA8,300$232.0K0.00%
Weil Company, Inc.8,104$227.0K0.12%
Amundi8,065$226.0K0.00%
Gluskin Sheff & Assoc Inc8,021$225.0K0.01%
Aigen Investment Management, LP7,864$220.0K0.04%
Mackenzie Financial Corp7,415$208.0K0.00%
Kowal Investment Group, LLC1,167$33.0K0.01%
Sofos Investments, Inc.0$28.0K0.02%
Proequities, Inc.500$14.0K0.00%
JFS Wealth Advisors, LLC250$7.00K0.00%
Koshinski Asset Management, Inc.160$4.48K0.00%
Agf Investments Inc.155$4.00K0.00%
Harel Insurance Investments & Financial Services Ltd.140$4.00K0.00%
Manchester Capital Management LLC119$3.00K0.00%
FinTrust Capital Advisors, LLC96$3.00K0.00%
Private Capital Group, LLC120$3.00K0.00%
RWM Asset Management, LLC100$3.00K0.00%
Duncker Streett & Co Inc52$1.00K0.00%
Ellevest, Inc.33$1.00K0.00%
Parallel Advisors, LLC36$1.00K0.00%
Liberty Wealth Management LLC40$1.00K0.00%
Bell Investment Advisors, Inc32$1.00K0.00%
CKW Financial Group15$00.00%
Berman Capital Advisors, LLC10$00.00%

Sold out (40)

Institutions that held Magnite, Inc. at the end of Q2 2021 and filed for Q3 2021 without it.

Institutions that sold out of MGNI in Q3 2021
InstitutionShares, Q2 2021Value, Q2 2021
Renaissance Technologies LLC1,129,454$38.2M
Nishkama Capital, LLC259,848$8.79M
SG Capital Management LLC227,056$7.68M
Holocene Advisors, LP178,997$6.06M
Glen Point Capital LLP145,000$4.91M
Roumell Asset Management, LLC100,000$3.38M
Capital Fund Management S.A.71,962$2.44M
Rice Hall James & Associates, LLC58,847$1.99M
Trexquant Investment LP51,436$1.74M
Marshall Wace North America L.P.36,701$1.24M
Blue Rock Advisors, LLC35,643$1.21M
Advisory Research Inc23,210$785.0K
Spouting Rock Asset Management, LLC21,468$726.0K
Wolverine Trading, LLC18,453$681.0K
Brant Point Investment Management LLC20,000$677.0K
Quantbot Technologies LP17,536$593.0K
Campbell & CO Investment Adviser LLC16,650$563.0K
Wellington Management Group LLP12,365$418.0K
Bridgefront Capital, LLC11,040$374.0K
Lazard Asset Management LLC10,000$338.0K
Diametric Capital, LP9,811$332.0K
Southland Equity Partners LLC9,763$330.4K
Salem Investment Counselors Inc9,430$319.0K
Pinnacle Associates Ltd8,250$279.0K
XTX Topco Ltd8,005$271.0K
Intrinsic Edge Capital Management LLC7,780$263.0K
W.G. Shaheen & Associates DBA Whitney & Co6,480$219.0K
Sigma Planning Corp6,345$215.0K
Caption Management, LLC4,800$162.0K
Picton Mahoney Asset Management3,400$115.0K
Meeder Asset Management Inc3,331$113.0K
Parisi Gray Wealth Management2,852$97.0K
Crewe Advisors LLC500$17.0K
Lindbrook Capital, LLC500$17.0K
Neo Ivy Capital Management373$13.0K
Panagora Asset Management Inc336$11.0K
Jefferies Group LLC300$10.2K
Strategic Blueprint, LLC100$3.00K
Evoke Wealth, LLC53$2.00K
Berkshire Capital Holdings Inc10$0

Not filed for Q3 2021 yet (4)

Institutions that held Magnite, Inc. at the end of Q2 2021 and haven't filed a 13F for Q3 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MGNI in Q2 2021 that haven't filed for Q3 2021
InstitutionShares, Q2 2021Value, Q2 2021
Pictet Asset Management Ltd8,300$281.0K
Cipher Capital LP6,454$218.0K
CWM, LLC203$7.00K
First Horizon Corp167$5.00K