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Magnetar Financial’s T-Mobile US TMUS Stock Holding History

Magnetar Financial’s Portfolio TMUS Stock Details TMUS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2017
Q4 		– Sell
-1,802,700
Closed -$790K – 883
2017
Q3 		$790K Buy
1,802,700
+1,602,700
+801% +$101M 0.01% 332
2017
Q2 		$12.1M Buy
+200,000
New +$13M 0.19% 79
2015
Q3 		– Sell
-750,000
Closed -$29.1M – 514
2015
Q2 		$29.1M Buy
+750,000
New +$26.9M 0.41% 66
2014
Q3 		– Sell
-125,000
Closed -$4.2M – 220
2014
Q2 		$4.2M Buy
+125,000
New +$4.04M 0.07% 118
2013
Q4 		– Sell
-450,000
Closed -$11.7M – 395
2013
Q3 		$11.7M Sell
450,000
-2,100,000
-82% -$51.3M 0.19% 108
2013
Q2 		$63.3M Buy
+2,550,000
New +$54.5M 1.38% 20

Other funds holding TMUS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
SoftBank Group
SoftBank Group Tokyo, Japan $18.2B AUM 177.65% 1-Year Est. Return

Magnetar Financial's TMUS Position: Q2 2026 in Review

Magnetar Financial increased its T-Mobile US (TMUS) stake by 178% in Q2 2026, buying an estimated $1.07M and bringing the position to 8,842 shares worth $1.48M. The position accounts for 0.01% of the portfolio, ranked #353.

Magnetar Financial first reported a position in TMUS in Q4 2013 and has held it in 17 quarters since. The position peaked at $13.1M in Q2 2014. 1,657 funds tracked by Wall St. Rank hold TMUS as of Q2 2026.

  • Magnetar Financial held 8,842 shares of T-Mobile US worth $1.48M as of Q2 2026.
  • Magnetar Financial bought 5,656 T-Mobile US shares in Q2 2026, an estimated $1.07M.
  • T-Mobile US made up 0.01% of Magnetar Financial's portfolio in Q2 2026, its #353 holding.
  • Magnetar Financial first reported a position in T-Mobile US in Q4 2013 and has held it in 17 quarters since.
  • Magnetar Financial's T-Mobile US position peaked at $13.1M in Q2 2014.
  • 1,657 funds tracked by Wall St. Rank held T-Mobile US as of Q2 2026.

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