What caused AMT's Q3 2024 EPS to drop unexpectedly?

American Tower's Q3 2024 EPS dropped to -$1.69, which is a significant decrease from the previous year's EPS of $1.02. This unexpected drop can be attributed to several factors:

1. **Foreign Exchange Fluctuations**: American Tower has significant international operations, and the company is exposed to foreign exchange rate fluctuations. In Q3 2024, the company reported a negative impact of FX headwinds on property revenue, adjusted EBITDA, and attributable AFFO. This suggests that the depreciation of certain currencies relative to the US dollar had a negative effect on the company's financial performance.
2. **Churn Impact**: The company mentioned that there is an elevated Sprint churn impacting growth rates through Q3 of next year. This suggests that the loss of Sprint customers could have contributed to the decrease in EPS.

In summary, the unexpected drop in AMT's Q3 2024 EPS is likely a result of a combination of foreign exchange fluctuations and churn impact.