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Joel Greenblatt’s Magnite MGNI Stock Holding History

Joel Greenblatt’s Portfolio MGNI Stock Details MGNI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-12,885
Closed -$153K – 1858
2026
Q1 		$153K Buy
+12,885
New +$173K ﹤0.01% 1710
2023
Q1 		– Sell
-10,188
Closed -$108K – 1361
2022
Q4 		$108K Buy
+10,188
New +$93K ﹤0.01% 1173
2020
Q2 		– Sell
-11,925
Closed -$66K – 1146
2020
Q1 		$66K Sell
11,925
-557
-4% -$5.12K ﹤0.01% 1020
2019
Q4 		$102K Sell
12,482
-8,178
-40% -$67.2K ﹤0.01% 1073
2019
Q3 		$180K Buy
+20,660
New +$181K ﹤0.01% 1024
2016
Q3 		– Sell
-53,624
Closed -$732K – 992
2016
Q2 		$732K Buy
53,624
+30,561
+133% +$492K 0.01% 669
2016
Q1 		$422K Buy
+23,063
New +$353K ﹤0.01% 794

Other funds holding MGNI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

Joel Greenblatt's MGNI Position: Q2 2026 in Review

Joel Greenblatt sold out of Magnite (MGNI) in Q2 2026, closing a stake of 12,885 shares — an estimated $153K sold.

Joel Greenblatt first reported a position in MGNI in Q1 2016 and held it in 7 quarters. The position peaked at $732K in Q2 2016. 309 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Joel Greenblatt reported no remaining Magnite position as of Q2 2026 after selling out during the quarter.
  • Joel Greenblatt sold 12,885 Magnite shares in Q2 2026, an estimated $153K.
  • Joel Greenblatt first reported a position in Magnite in Q1 2016 and held it in 7 quarters.
  • Joel Greenblatt's Magnite position peaked at $732K in Q2 2016.
  • 309 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Gotham Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.