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 New York $5.72T AUM 30.48% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

SoftBank Group Tokyo, Japan $11.4B AUM 27.91% 1-Year Est. Return

Magnetar Financial's TMUS Position: Q1 2026 in Review

Magnetar Financial opened a new position in T-Mobile US (TMUS) in Q1 2026: 3,186 shares worth $682K. The stake represents 0.01% of the portfolio and ranks #562 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in TMUS as recently as Q3 2025.

Magnetar Financial first reported a position in TMUS in Q4 2013 and has held it in 16 quarters since. The position peaked at $13.1M in Q2 2014. 1,719 funds tracked by Wall St. Rank hold TMUS as of Q1 2026.

Magnetar Financial held 3,186 shares of T-Mobile US worth $682K as of Q1 2026.
T-Mobile US was a new Magnetar Financial position in Q1 2026.
T-Mobile US made up 0.01% of Magnetar Financial's portfolio in Q1 2026, its #562 holding.
Magnetar Financial first reported a position in T-Mobile US in Q4 2013 and has held it in 16 quarters since.
Magnetar Financial's T-Mobile US position peaked at $13.1M in Q2 2014.
1,719 funds tracked by Wall St. Rank held T-Mobile US as of Q1 2026.

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