MF
CMCSA icon

Magnetar Financial’s Comcast CMCSA Stock Holding History

Magnetar Financial’s Portfolio CMCSA Stock Details CMCSA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2018
Q2 		– Sell
-400,000
Closed -$202K – 524
2018
Q1 		$202K Buy
+400,000
New +$15.5M ﹤0.01% 523
2017
Q4 		– Sell
-700,000
Closed -$893K – 728
2017
Q3 		$893K Buy
+700,000
New +$27.6M 0.02% 301
2015
Q4 		– Sell
-600,000
Closed -$17.1M – 372
2015
Q3 		$17.1M Buy
+600,000
New +$17.8M 0.23% 72

Other funds holding CMCSA

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $191B AUM 17.5% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Magnetar Financial's CMCSA Position: Q2 2026 in Review

Magnetar Financial increased its Comcast (CMCSA) stake by 490% in Q2 2026, buying an estimated $1.93M and bringing the position to 90,251 shares worth $2.22M. The position accounts for 0.02% of the portfolio, ranked #317.

Magnetar Financial first reported a position in CMCSA in Q2 2013 and has held it in 21 quarters since. The position peaked at $35.4M in Q1 2016. 1,892 funds tracked by Wall St. Rank hold CMCSA as of Q2 2026.

  • Magnetar Financial held 90,251 shares of Comcast worth $2.22M as of Q2 2026.
  • Magnetar Financial bought 74,946 Comcast shares in Q2 2026, an estimated $1.93M.
  • Comcast made up 0.02% of Magnetar Financial's portfolio in Q2 2026, its #317 holding.
  • Magnetar Financial first reported a position in Comcast in Q2 2013 and has held it in 21 quarters since.
  • Magnetar Financial's Comcast position peaked at $35.4M in Q1 2016.
  • 1,892 funds tracked by Wall St. Rank held Comcast as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.