What drove CHTR's earnings growth in Q3?

Charter Communications' (CHTR) earnings growth in Q4 2024 was primarily driven by the following factors:

1. **Mobile Service Growth**: The mobile segment contributed significantly to the growth, with over 2 million new mobile lines added in 2024, leading to a 37.4% increase in residential mobile service revenue compared to the previous year. This expansion, particularly in the Spectrum Mobile division, positioned Charter as the fastest-growing mobile provider in the United States.
2. **Advertising Sales**: Charter experienced a 26.4% increase in advertising sales, which contributed to the revenue growth. Political advertising played a notable role in this increase, with record revenue generated from this segment.
3. **Cost Efficiency Initiatives**: Charter's focus on strategic cost efficiency initiatives supported the growth in EBITDA, which accelerated to 3.1% year-over-year. This was achieved alongside significant investments in network evolution and expansion, reflecting a commitment to sustainable financial health.
4. **Retention of Affordable Connectivity Program (ACP) Customers**: Charter successfully retained approximately 90% of its former ACP customers, mitigating the impact of the ACP program's end. This effective customer management underscored the company's adaptability to policy changes and its ability to maintain a stable customer base.

In summary, Charter's earnings growth in Q4 2024 was driven by strong performance across its mobile and advertising segments, coupled with effective cost management and strategic investments. The company's ability to adapt to policy changes and retain customers in a competitive market was also instrumental in its financial success.