Holocene Advisors
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Holocene Advisors’s Magnite MGNI Stock Holding History

Holocene Advisors’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
-101,973
Closed -$1.21M – 929
2026
Q1 		$1.21M Buy
101,973
+86,411
+555% +$1.16M ﹤0.01% 642
2025
Q4 		$253K Buy
+15,562
New +$258K ﹤0.01% 713
2022
Q3 		– Sell
-121,143
Closed -$1.08M – 899
2022
Q2 		$1.08M Sell
121,143
-9,096
-7% -$97.5K 0.01% 652
2022
Q1 		$1.72M Buy
130,239
+95,592
+276% +$1.29M 0.01% 566
2021
Q4 		$606K Buy
+34,647
New +$781K ﹤0.01% 754
2021
Q3 		– Sell
-178,997
Closed -$6.06M – 909
2021
Q2 		$6.06M Buy
+178,997
New +$6.06M 0.03% 316

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

Holocene Advisors's MGNI Position: Q2 2026 in Review

Holocene Advisors sold out of Magnite (MGNI) in Q2 2026, closing a stake of 101,973 shares — an estimated $1.21M sold.

Holocene Advisors first reported a position in MGNI in Q2 2021 and held it in 6 quarters. The position peaked at $6.06M in Q2 2021. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Holocene Advisors reported no remaining Magnite position as of Q2 2026 after selling out during the quarter.
  • Holocene Advisors sold 101,973 Magnite shares in Q2 2026, an estimated $1.21M.
  • Holocene Advisors first reported a position in Magnite in Q2 2021 and held it in 6 quarters.
  • Holocene Advisors's Magnite position peaked at $6.06M in Q2 2021.
  • 311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Holocene Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.