Penbrook Management
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Penbrook Management’s Magnite MGNI Stock Holding History

Penbrook 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
2026
Q3 		$2.67M Sell
105,690
-6,350
-6% -$143K 1.58% 12
2026
Q2 		$2.13M Sell
112,040
-150
-0.1% -$2.15K 1.36% 20
2026
Q1 		$1.33M Buy
112,190
+81,075
+261% +$1.09M 1.01% 29
2025
Q4 		$505K Buy
31,115
+2,695
+9% +$44.7K 0.35% 58
2025
Q3 		$619K Hold
28,420
– – 0.43% 51
2025
Q2 		$685K Sell
28,420
-9,750
-26% -$144K 0.52% 48
2025
Q1 		$436K Sell
38,170
-310
-0.8% -$4.94K 0.33% 66
2024
Q4 		$613K Buy
38,480
+15,050
+64% +$221K 0.42% 52
2024
Q3 		$325K Buy
+23,430
New +$319K 0.21% 80

Other funds holding MGNI

Maestria Partners
Maestria Partners Atlanta, Georgia $298M AUM 13.91% 1-Year Est. Return
Kopion Asset Management
Kopion Asset Management Mckinney, Texas $156M AUM 4.73% 1-Year Est. Return
Harbor Capital Advisors
Harbor Capital Advisors Chicago, Illinois $1.48B AUM 30.88% 1-Year Est. Return
Moran Wealth Management
Moran Wealth Management Naples, Florida $3.64B AUM 28.63% 1-Year Est. Return
Moody National Bank Trust Division
Moody National Bank Trust Division Galveston, Texas $1.21B AUM 28.25% 1-Year Est. Return
Cardinal Point Capital Management
Cardinal Point Capital Management Toronto, Ontario, Canada $1.8B AUM 17.41% 1-Year Est. Return
Pinnacle Associates
Pinnacle Associates New York $8.92B AUM 43.91% 1-Year Est. Return
State of Alaska Department of Revenue
State of Alaska Department of Revenue Juneau, Alaska $9.6B AUM 34.67% 1-Year Est. Return
Fulton Bank
Fulton Bank Lancaster, Pennsylvania $3.29B AUM 13.65% 1-Year Est. Return
Blue Trust Inc
Blue Trust Inc Alpharetta, Georgia $9.5B AUM 13.02% 1-Year Est. Return

Penbrook Management's MGNI Position: Q3 2026 in Review

Penbrook Management reduced its Magnite (MGNI) stake by 5.7% in Q3 2026, selling an estimated $143K and leaving 105,690 shares worth $2.67M. The position accounts for 1.58% of the portfolio, ranked #12.

Penbrook Management first reported a position in MGNI in Q3 2024 and has held it in 9 quarters since. 43 funds tracked by Wall St. Rank hold MGNI as of Q3 2026.

  • Penbrook Management held 105,690 shares of Magnite worth $2.67M as of Q3 2026.
  • Penbrook Management sold 6,350 Magnite shares in Q3 2026, an estimated $143K.
  • Magnite made up 1.58% of Penbrook Management's portfolio in Q3 2026, its #12 holding.
  • Penbrook Management first reported a position in Magnite in Q3 2024 and has held it in 9 quarters since.
  • 43 funds tracked by Wall St. Rank held Magnite as of Q3 2026.

Based on Penbrook Management's 13F filing for Q3 2026, filed 16 Oct 2026.