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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 $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Magnetar Financial's CMCSA Position: Q1 2026 in Review

Magnetar Financial reduced its Comcast (CMCSA) stake by 82% in Q1 2026, selling an estimated $2.14M and leaving 15,305 shares worth $442K. The position accounts for ﹤0.01% of the portfolio, ranked #657.

Magnetar Financial first reported a position in CMCSA in Q2 2013 and has held it in 20 quarters since. The position peaked at $35.4M in Q1 2016. 2,042 funds tracked by Wall St. Rank hold CMCSA as of Q1 2026.

  • Magnetar Financial held 15,305 shares of Comcast worth $442K as of Q1 2026.
  • Magnetar Financial sold 71,383 Comcast shares in Q1 2026, an estimated $2.14M.
  • Comcast made up ﹤0.01% of Magnetar Financial's portfolio in Q1 2026, its #657 holding.
  • Magnetar Financial first reported a position in Comcast in Q2 2013 and has held it in 20 quarters since.
  • Magnetar Financial's Comcast position peaked at $35.4M in Q1 2016.
  • 2,042 funds tracked by Wall St. Rank held Comcast as of Q1 2026.

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