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 $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

Mariner's TMUS Position: Q1 2026 in Review

Mariner reduced its T-Mobile US (TMUS) stake by 78% in Q1 2026, selling an estimated $162M and leaving 222,293 shares worth $46.7M. The position accounts for 0.05% of the portfolio, ranked #278.

Mariner first reported a position in TMUS in Q1 2018 and has held it in 29 quarters since. The position peaked at $299M in Q1 2025. 1,719 funds tracked by Wall St. Rank hold TMUS as of Q1 2026.

Mariner held 222,293 shares of T-Mobile US worth $46.7M as of Q1 2026.
Mariner sold 788,695 T-Mobile US shares in Q1 2026, an estimated $162M.
T-Mobile US made up 0.05% of Mariner's portfolio in Q1 2026, its #278 holding.
Mariner first reported a position in T-Mobile US in Q1 2018 and has held it in 29 quarters since.
Mariner's T-Mobile US position peaked at $299M in Q1 2025.
1,719 funds tracked by Wall St. Rank held T-Mobile US as of Q1 2026.

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