Mariner’s T-Mobile US TMUS Stock Holding History

Mariner’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
2018 Q2	–	Sell	-3,000	Closed	-$4K	–	823
2018 Q1	$4K	Buy	+3,000	New	+$188K	﹤0.01%	647

Other funds holding TMUS

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

SoftBank Group Tokyo, Japan $18.2B AUM 177.65% 1-Year Est. Return

Mariner's TMUS Position: Q2 2026 in Review

Mariner increased its T-Mobile US (TMUS) stake by 60% in Q2 2026, buying an estimated $25.2M and bringing the position to 355,200 shares worth $59.6M. The position accounts for 0.06% of the portfolio, ranked #242.

Mariner first reported a position in TMUS in Q1 2018 and has held it in 30 quarters since. The position peaked at $299M in Q1 2025. 1,657 funds tracked by Wall St. Rank hold TMUS as of Q2 2026.

Mariner held 355,200 shares of T-Mobile US worth $59.6M as of Q2 2026.
Mariner bought 132,907 T-Mobile US shares in Q2 2026, an estimated $25.2M.
T-Mobile US made up 0.06% of Mariner's portfolio in Q2 2026, its #242 holding.
Mariner first reported a position in T-Mobile US in Q1 2018 and has held it in 30 quarters since.
Mariner's T-Mobile US position peaked at $299M in Q1 2025.
1,657 funds tracked by Wall St. Rank held T-Mobile US as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.