Stifel Financial
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Stifel Financial’s Magnite MGNI Stock Holding History

Stifel Financial’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
Q1 		$554K Sell
46,601
-12,181
-21% -$163K ﹤0.01% 2818
2025
Q4 		$954K Sell
58,782
-349
-0.6% -$5.79K ﹤0.01% 2465
2025
Q3 		$1.29M Sell
59,131
-19,668
-25% -$464K ﹤0.01% 2223
2025
Q2 		$1.9M Buy
78,799
+24,504
+45% +$361K ﹤0.01% 1877
2025
Q1 		$620K Sell
54,295
-1,827
-3% -$29.1K ﹤0.01% 2547
2024
Q4 		$893K Buy
56,122
+9,620
+21% +$141K ﹤0.01% 2323
2024
Q3 		$644K Buy
46,502
+21,472
+86% +$293K ﹤0.01% 2517
2024
Q2 		$333K Buy
+25,030
New +$274K ﹤0.01% 2860
2023
Q4 		– Sell
-10,955
Closed -$82.6K – 3386
2023
Q3 		$82.6K Sell
10,955
-253
-2% -$2.73K ﹤0.01% 3136
2023
Q2 		$153K Buy
+11,208
New +$125K ﹤0.01% 3100
2022
Q1 		– Sell
-31,862
Closed -$558K – 3451
2021
Q4 		$558K Sell
31,862
-8,211
-20% -$185K ﹤0.01% 2535
2021
Q3 		$1.12M Buy
40,073
+7,796
+24% +$235K ﹤0.01% 2002
2021
Q2 		$1.09M Sell
32,277
-429
-1% -$14.5K ﹤0.01% 2026
2021
Q1 		$1.36M Buy
32,706
+14,694
+82% +$637K ﹤0.01% 1792
2020
Q4 		$553K Buy
+18,012
New +$273K ﹤0.01% 2259
2020
Q2 		– Sell
-23,538
Closed -$128K – 2909
2020
Q1 		$128K Buy
23,538
+12,391
+111% +$114K ﹤0.01% 2543
2019
Q4 		$90K Sell
11,147
-3,348
-23% -$27.5K ﹤0.01% 2897
2019
Q3 		$126K Buy
+14,495
New +$127K ﹤0.01% 2737

Other funds holding MGNI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Stifel Financial's MGNI Position: Q1 2026 in Review

Stifel Financial reduced its Magnite (MGNI) stake by 21% in Q1 2026, selling an estimated $163K and leaving 46,601 shares worth $554K. The position accounts for ﹤0.01% of the portfolio, ranked #2818.

Stifel Financial first reported a position in MGNI in Q3 2019 and has held it in 18 quarters since. The position peaked at $1.9M in Q2 2025. 296 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Stifel Financial held 46,601 shares of Magnite worth $554K as of Q1 2026.
  • Stifel Financial sold 12,181 Magnite shares in Q1 2026, an estimated $163K.
  • Magnite made up ﹤0.01% of Stifel Financial's portfolio in Q1 2026, its #2818 holding.
  • Stifel Financial first reported a position in Magnite in Q3 2019 and has held it in 18 quarters since.
  • Stifel Financial's Magnite position peaked at $1.9M in Q2 2025.
  • 296 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Stifel Financial's 13F filing for Q1 2026, filed 12 May 2026.