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Winthrop Advisory Group’s Magnite MGNI Stock Holding History

Winthrop Advisory Group’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 		$276K Hold
14,520
– – 0.02% 183
2026
Q1 		$172K Hold
14,520
– – 0.01% 189
2025
Q4 		$236K Buy
14,520
+440
+3% +$7.3K 0.02% 169
2025
Q3 		$307K Buy
14,080
+80
+0.6% +$1.89K 0.03% 137
2025
Q2 		$338K Buy
14,000
+600
+4% +$8.84K 0.03% 126
2025
Q1 		$153K Buy
13,400
+200
+2% +$3.19K 0.02% 154
2024
Q4 		$210K Buy
13,200
+300
+2% +$4.4K 0.03% 145
2024
Q3 		$179K Buy
+12,900
New +$176K 0.02% 146

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

Winthrop Advisory Group's MGNI Position: Q2 2026 in Review

Winthrop Advisory Group held its Magnite (MGNI) position steady in Q2 2026 at 14,520 shares worth $276K. The position accounts for 0.02% of the portfolio, ranked #183.

Winthrop Advisory Group first reported a position in MGNI in Q3 2024 and has held it in 8 quarters since. The position peaked at $338K in Q2 2025. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Winthrop Advisory Group held 14,520 shares of Magnite worth $276K as of Q2 2026.
  • Winthrop Advisory Group left its Magnite share count unchanged in Q2 2026.
  • Magnite made up 0.02% of Winthrop Advisory Group's portfolio in Q2 2026, its #183 holding.
  • Winthrop Advisory Group first reported a position in Magnite in Q3 2024 and has held it in 8 quarters since.
  • Winthrop Advisory Group's Magnite position peaked at $338K in Q2 2025.
  • 311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Winthrop Advisory Group's 13F filing for Q2 2026, filed 17 Jul 2026.