HCA
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Harbor Capital Advisors’s Magnite MGNI Stock Holding History

Harbor Capital 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 		$5.93M Sell
312,371
-12,890
-4% -$185K 0.4% 47
2026
Q1 		$3.86M Buy
325,261
+111,010
+52% +$1.49M 0.31% 60
2025
Q4 		$3.48M Buy
214,251
+42,080
+24% +$698K 0.27% 78
2025
Q3 		$3.75M Sell
172,171
-461,976
-73% -$10.9M 0.29% 70
2025
Q2 		$15.3M Buy
634,147
+42,834
+7% +$631K 0.64% 22
2025
Q1 		$6.75M Sell
591,313
-251,448
-30% -$4.01M 0.31% 111
2024
Q4 		$13.4M Sell
842,761
-78,770
-9% -$1.16M 0.59% 32
2024
Q3 		$12.8M Buy
921,531
+531,069
+136% +$7.24M 0.55% 37
2024
Q2 		$5.19M Buy
390,462
+284,202
+267% +$3.11M 0.4% 55
2024
Q1 		$1.14M Buy
106,260
+83,087
+359% +$830K 0.15% 182
2023
Q4 		$216K Sell
23,173
-14,386
-38% -$114K 0.04% 348
2023
Q3 		$283K Buy
37,559
+9,153
+32% +$98.7K 0.06% 312
2023
Q2 		$388K Buy
+28,406
New +$316K 0.08% 289

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

Harbor Capital Advisors's MGNI Position: Q2 2026 in Review

Harbor Capital Advisors reduced its Magnite (MGNI) stake by 4% in Q2 2026, selling an estimated $185K and leaving 312,371 shares worth $5.93M. The position accounts for 0.4% of the portfolio, ranked #47.

Harbor Capital Advisors first reported a position in MGNI in Q2 2023 and has held it in 13 quarters since. The position peaked at $15.3M in Q2 2025. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Harbor Capital Advisors held 312,371 shares of Magnite worth $5.93M as of Q2 2026.
  • Harbor Capital Advisors sold 12,890 Magnite shares in Q2 2026, an estimated $185K.
  • Magnite made up 0.4% of Harbor Capital Advisors's portfolio in Q2 2026, its #47 holding.
  • Harbor Capital Advisors first reported a position in Magnite in Q2 2023 and has held it in 13 quarters since.
  • Harbor Capital Advisors's Magnite position peaked at $15.3M in Q2 2025.
  • 311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Harbor Capital Advisors's 13F filing for Q2 2026, filed 7 Aug 2026.