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Main Street Research’s T-Mobile US TMUS Stock Holding History

Main Street Research’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
2026
Q2 		– Sell
-1,070
Closed -$225K – 159
2026
Q1 		$225K Sell
1,070
-1,092
-51% -$224K 0.01% 135
2025
Q4 		$439K Sell
2,162
-178,159
-99% -$37.8M 0.03% 85
2025
Q3 		$43.2M Buy
180,321
+667
+0.4% +$161K 2.33% 18
2025
Q2 		$42.8M Buy
179,654
+1,752
+1% +$428K 2.66% 17
2025
Q1 		$47.4M Buy
177,902
+1,788
+1% +$441K 3.1% 12
2024
Q4 		$38.9M Buy
176,114
+2,791
+2% +$635K 2.42% 17
2024
Q3 		$35.8M Buy
173,323
+2,352
+1% +$450K 2.25% 17
2024
Q2 		$30.1M Buy
170,971
+5,721
+3% +$959K 1.99% 23
2024
Q1 		$27M Buy
165,250
+3,406
+2% +$554K 1.83% 31
2023
Q4 		$25.9M Sell
161,844
-343
-0.2% -$50.7K 2.08% 21
2023
Q3 		$22.7M Buy
162,187
+928
+0.6% +$129K 2.34% 12
2023
Q2 		$22.4M Buy
161,259
+4,131
+3% +$580K 3.57% 9
2023
Q1 		$22.8M Buy
157,128
+1,184
+0.8% +$172K 4.49% 8
2022
Q4 		$21.8M Buy
155,944
+1,271
+0.8% +$183K 5.32% 9
2022
Q3 		$20.8M Buy
+154,673
New +$21.7M 4.57% 11

Other funds holding TMUS

Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
ECSS
Eurizon Capital SGR SpA Milan $37.3B AUM
CS
CapitalatWork SA Auderghem $3.99B AUM
HGIM
High Ground Investment Management London, United Kingdom $1.14B AUM 29.32% 1-Year Est. Return
ECM
Evergreen Capital Management Bellevue, Washington $5.7B AUM 32.06% 1-Year Est. Return
QP
Quilter Plc London, United Kingdom $6.65B AUM 37.83% 1-Year Est. Return
Mirae Asset Global Investments
Mirae Asset Global Investments Seoul, South Korea $67.7B AUM 51.91% 1-Year Est. Return
New York State Common Retirement Fund
New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return
Wealth Enhancement Advisory Services
Wealth Enhancement Advisory Services Plymouth, Minnesota $59.8B AUM 29.42% 1-Year Est. Return

Main Street Research's TMUS Position: Q2 2026 in Review

Main Street Research sold out of T-Mobile US (TMUS) in Q2 2026, closing a stake of 1,070 shares — an estimated $225K sold.

Main Street Research first reported a position in TMUS in Q3 2022 and held it in 15 quarters. The position peaked at $47.4M in Q1 2025. 641 funds tracked by Wall St. Rank hold TMUS as of Q2 2026.

  • Main Street Research reported no remaining T-Mobile US position as of Q2 2026 after selling out during the quarter.
  • Main Street Research sold 1,070 T-Mobile US shares in Q2 2026, an estimated $225K.
  • Main Street Research first reported a position in T-Mobile US in Q3 2022 and held it in 15 quarters.
  • Main Street Research's T-Mobile US position peaked at $47.4M in Q1 2025.
  • 641 funds tracked by Wall St. Rank held T-Mobile US as of Q2 2026.

Based on Main Street Research's 13F filing for Q2 2026, filed 29 Jul 2026.