140 Summer Partners LP: T-MOBILE US INC (TMUS): Quarterly 13F Position History
As of Q1 2026, 140 Summer Partners LP reported 386,718 shares of T-MOBILE US INC (TMUS), worth $81.2M and representing 7.2% of its 13F equity book. Quarter-over-quarter share count change: + 6,098 (+1.6%) . The position first appeared in Q4 2020 and has been disclosed across 22 13F-HR filings in Pactolio's tracked window.
- 386,718Shares Held (Latest Filing)
- $81.2MReported Market Value (Latest Filing)
- 7.2%Portfolio Weight (% of 13F Equity Book)
- +6,098Quarter-over-Quarter Share Change
- +$3.9MQuarter-over-Quarter Value Change
- 807,492Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 22 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 386,718 | +6,098 | +1.6% | $81.2M | 7.2% | $210.0 |
| Q4 2025 | 380,620 | +68,146 | +21.8% | $77.3M | 6.0% | $203.0 |
| Q3 2025 | 312,474 | +168,242 | +116.6% | $74.8M | 6.6% | $239.4 |
| Q2 2025 | 144,232 | 94,407 | -39.6% | $34.4M | 4.4% | $238.3 |
| Q1 2025 | 238,639 | 94,581 | -28.4% | $63.6M | 8.5% | $266.7 |
| Q4 2024 | 333,220 | 30,200 | -8.3% | $73.6M | 8.9% | $220.7 |
| Q3 2024 | 363,420 | 9,800 | -2.6% | $75.0M | 8.6% | $206.4 |
| Q2 2024 | 373,220 | 16,600 | -4.3% | $65.8M | 8.0% | $176.2 |
| Q1 2024 | 389,820 | 0 | — | $63.6M | 7.9% | $163.2 |
| Q4 2023 | 389,820 | 20,600 | -5.0% | $62.5M | 10.8% | $160.3 |
| Q3 2023 | 410,420 | +500 | +0.1% | $57.5M | 11.2% | $140.1 |
| Q2 2023 | 409,920 | 95,300 | -18.9% | $56.9M | 12.6% | $138.9 |
| Q1 2023 | 505,220 | 200 | -0.0% | $73.2M | 13.1% | $144.8 |
| Q4 2022 | 505,420 | 18,772 | -3.6% | $70.8M | 14.6% | $140.0 |
| Q3 2022 | 524,192 | 89,200 | -14.5% | $70.3M | 14.4% | $134.2 |
| Q2 2022 | 613,392 | 194,100 | -24.0% | $82.5M | 14.0% | $134.5 |
| Q1 2022 | 807,492 | +756,692 | +1489.6% | $103.6M | 11.7% | $128.4 |
| Q4 2021 | 50,800 | 467,419 | -90.2% | $5.9M | 0.9% | $116.0 |
| Q3 2021 | 518,219 | 28,600 | -5.2% | $66.2M | 10.0% | $127.8 |
| Q2 2021 | 546,819 | +100,700 | +22.6% | $79.2M | 13.1% | $144.8 |
| Q1 2021 | 446,119 | +51,200 | +13.0% | $55.9M | 10.2% | $125.3 |
| Q4 2020 | 394,919 | — | — | $53.3M | 11.8% | $134.9 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did 140 Summer Partners LP first disclose a TMUS position in 13F-HR filings?
140 Summer Partners LP first reported T-MOBILE US INC (TMUS) on its 13F-HR filing for the period ending 2020-12-31 (Q4 2020). The position has appeared on 22 reported quarters within Pactolio's tracked window.
What was 140 Summer Partners LP's most recent quarter-over-quarter share-count change in TMUS?
Between Q4 2025 and Q1 2026, 140 Summer Partners LP added 6,098 shares of TMUS (+1.6%), bringing the total reported position to 386,718 shares at a market value of $81.2M.
Does the implied price-per-share represent 140 Summer Partners LP's cost basis in TMUS?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.