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Driehaus Capital Management’s Magnite MGNI Stock Holding History

Driehaus Capital Management’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
2025
Q4 		– Sell
-1,516,296
Closed -$33M – 445
2025
Q3 		$33M Sell
1,516,296
-1,265,882
-45% -$29.9M 0.24% 139
2025
Q2 		$67.1M Buy
2,782,178
+372,739
+15% +$5.49M 0.54% 57
2025
Q1 		$27.5M Sell
2,409,439
-909,054
-27% -$14.5M 0.27% 119
2024
Q4 		$52.8M Sell
3,318,493
-98,335
-3% -$1.44M 0.44% 83
2024
Q3 		$47.3M Buy
3,416,828
+2,669,069
+357% +$36.4M 0.41% 83
2024
Q2 		$9.94M Buy
+747,759
New +$8.17M 0.1% 216
2023
Q4 		– Sell
-795,157
Closed -$6M – 427
2023
Q3 		$6M Sell
795,157
-1,205,011
-60% -$13M 0.08% 271
2023
Q2 		$27.3M Buy
2,000,168
+1,497,537
+298% +$16.7M 0.34% 96
2023
Q1 		$4.65M Buy
+502,631
New +$5.36M 0.07% 295
2021
Q2 		– Sell
-1,413,588
Closed -$58.8M – 486
2021
Q1 		$58.8M Sell
1,413,588
-498,011
-26% -$21.6M 0.87% 20
2020
Q4 		$58.7M Buy
+1,911,599
New +$28.9M 0.95% 15
2020
Q3 		– Sell
-2,713,353
Closed -$18.1M – 423
2020
Q2 		$18.1M Buy
2,713,353
+1,602,824
+144% +$10M 0.44% 65
2020
Q1 		$6.16M Sell
1,110,529
-597,974
-35% -$5.5M 0.21% 120
2019
Q4 		$13.9M Buy
1,708,503
+183,658
+12% +$1.51M 0.37% 75
2019
Q3 		$13.3M Buy
1,524,845
+128,443
+9% +$1.13M 0.43% 62
2019
Q2 		$8.88M Buy
1,396,402
+1,085,952
+350% +$6.67M 0.28% 98
2019
Q1 		$1.89M Buy
+310,450
New +$1.6M 0.07% 226
2015
Q2 		– Sell
-50,116
Closed -$898K – 551
2015
Q1 		$898K Buy
50,116
+8,316
+20% +$140K 0.03% 418
2014
Q4 		$675K Buy
+41,800
New +$539K 0.03% 415

Other funds holding MGNI

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
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
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 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
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Driehaus Capital Management's MGNI Position: Q4 2025 in Review

Driehaus Capital Management sold out of Magnite (MGNI) in Q4 2025, closing a stake of 1,516,296 shares — an estimated $33M sold.

Driehaus Capital Management first reported a position in MGNI in Q4 2014 and held it in 19 quarters. The position peaked at $67.1M in Q2 2025. 304 funds tracked by Wall St. Rank hold MGNI as of Q4 2025.

  • Driehaus Capital Management reported no remaining Magnite position as of Q4 2025 after selling out during the quarter.
  • Driehaus Capital Management sold 1,516,296 Magnite shares in Q4 2025, an estimated $33M.
  • Driehaus Capital Management first reported a position in Magnite in Q4 2014 and held it in 19 quarters.
  • Driehaus Capital Management's Magnite position peaked at $67.1M in Q2 2025.
  • 304 funds tracked by Wall St. Rank held Magnite as of Q4 2025.

Based on Driehaus Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.