Group 1 - T-Mobile US is expected to announce earnings on October 23, 2025, with a revenue increase of approximately 9% year-over-year, reaching $22 billion, and earnings per share projected at $2.40 [2] - The growth is attributed to strong postpaid phone additions and the expansion of the high-speed wireless broadband division, supported by the 5G network serving over 330 million people in the U.S. [2] - In the last quarter, T-Mobile reported net customer additions of 830,000 for postpaid phones and 454,000 for 5G broadband [2] Group 2 - T-Mobile has a market capitalization of $260 billion, with revenue of $84 billion over the past twelve months, operating profits of $19 billion, and a net income of $12 billion [3] - Historical data shows that T-Mobile has had 20 earnings data points in the past five years, with 13 positive and 7 negative one-day returns, resulting in a 65% rate of positive returns [5] - The median positive return is 5.3%, while the median negative return is -0.4% [5] Group 3 - A strategy for traders is to understand the correlation between short-term and medium-term returns following earnings, which can inform trading positions [6] - The correlation data indicates that if the one-day post-earnings return is positive, traders may consider a long position for the subsequent five days [6] - T-Mobile's performance can be compared to the Trefis High Quality portfolio, which has outperformed the S&P 500 with returns greater than 105% since its inception [3][7]