Confused About Schedule FA Peak Value—Need Help

I held a foreign stock only from January to March 2024. However, the stock’s highest price in the 2024 calendar year occurred in June, when I no longer held it. For the purpose of reporting in Schedule FA, should I report the peak FMV only during the period I actually held the stock (Jan–March), or should I consider the stock’s highest price for the entire calendar year?

Also, if the stock purchase date falls on a Sunday or a market holiday, which foreign exchange rate should be used for reporting—should I take the rate from the preceding working day or the next working day?

TIA !