WhaleCreep

Which hedge funds own MGNI? MAGNITE INC, Q2 2026 13F holders

Communication ServicesAdvertising Agencies

45 tracked hedge funds disclosed a position in MGNI (MAGNITE INC) in their Q2 2026 13F filings, worth $402.3m in total. The largest holder by portfolio weight is Edenbrook Capital, LLC at 23.6% of its book. 13 opened a new position this quarter: EVR Research LP, Occam Crest Management LP, Pillsbury Lake Capital LLC, Concentric Capital Strategies, LP. 9 exited: No Street GP LP, Bayforest Capital Ltd, Twinbeech Capital LP.

45
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
13
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
9
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$35.6m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$25.4m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$402m
Combined value
Sum of the holders' reported positions in the security.
3.6%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

45 rows
Edenbrook Capital, LLC Hedge fund23.6%$67.5m3.56m+27%added
Nine Ten Capital Management LLC Hedge fund19.3%$61.9m3.26m−6.3%reduced
Grizzlyrock Capital, LLC Hedge fund15.5%$22.1m1.16m−6.0%reduced
Maestria Partners LLC Hedge fund7.6%$22.0m1.16m−15%reduced
EVR Research LP Hedge fund4.5%$9.1m480,000–new
S Squared Technology, LLC Hedge fund3.3%$10.8m567,862+41%added
Manatuck Hill Partners, LLC Hedge fund2.8%$8.5m450,000+45%added
Park West Asset Management LLC Hedge fund2.6%$38.0m2.00m+234%added
Occam Crest Management LP Hedge fund2.1%$3.8m195,000–new
Pillsbury Lake Capital LLC Hedge fund1.1%$4.1m217,753–new
QVT Financial LP Hedge fund0.9%$14.2m747,437+65%added
Diametric Capital, LP Hedge fund0.2%$1.8m96,795+178%added
Concentric Capital Strategies, LP Hedge fund0.2%$2.8m146,698–new
Dark Forest Capital Management LP Hedge fund0.1%$2.1m110,985+850%added
Senvest Management, LLC Hedge fund0.1%$4.3m224,1000.0%held
Ardsley Advisory Partners LP Hedge fund0.1%$1.1m57,500−26%reduced
Radcliffe Capital Management, L.P. Hedge fund0.1%$1.5m77,400−31%reduced
CenterBook Partners LP Hedge fund0.1%$2.2m117,550−79%reduced
Caption Management, LLC Hedge fund0.10%$2.8m145,590−64%reduced
Fox Run Management, L.L.C. Hedge fund0.08%$506k26,666−70%reduced
Schonfeld Strategic Advisors LLC Hedge fund0.06%$10.7m562,195−65%reduced
ExodusPoint Capital Management, LP Hedge fund0.05%$5.2m271,869+82%added
Qube Research & Technologies Ltd Hedge fund0.04%$37.1m1.96m+196%added
Trexquant Investment LP Hedge fund0.04%$6.3m333,429–new
Persistent Asset Partners Ltd Hedge fund0.03%$110k5,815–new
Mirabella Financial Services LLP Hedge fund0.03%$347k18,287−14%reduced
Mangrove Partners IM, LLC Hedge fund0.02%$362k19,086–new
Balyasny Asset Management L.P. Hedge fund0.02%$12.7m666,554−56%reduced
Prelude Capital Management, LLC Hedge fund0.02%$248k13,073−27%reduced
Alyeska Investment Group, L.P. Hedge fund0.02%$6.2m326,839–new
Boothbay Fund Management, LLC Hedge fund0.02%$811k42,705–new
Lighthouse Investment Partners, LLC Hedge fund0.01%$417k21,980–new
Parallax Volatility Advisers, L.P. Hedge fund0.01%$318k16,743+27%added
Millennium Management LLC Hedge fund0.01%$14.5m764,819−38%reduced
Jain Global LLC Hedge fund0.01%$769k40,506–new
Squarepoint Ops LLC Hedge fund0.01%$4.4m230,234−23%reduced
Marshall Wace, LLP Hedge fund0.01%$6.5m341,864+705%added
Citadel Advisors LLC Hedge fund0.01%$9.0m472,865−55%reduced
Jupiter Asset Management Ltd Hedge fund0.0%$506k26,657−62%reduced
AQR Capital Management LLC Hedge fund0.0%$3.4m176,599+46%added
Two Sigma Investments, LP Hedge fund0.0%$810k42,659−89%reduced
D. E. Shaw & Co., Inc. Hedge fund0.0%$678k35,719–new
Quarry LP Hedge fund0.0%$1.7k89–new
Walleye Capital LLC Hedge fund0.0%$46.5k2,449−68%reduced
CVA Family Office, LLC Family office0.0%$1.4k73+4.3%added