Funso (Chichewa): Ndi kampani iti yomwe ili ndi mtengo wokhazikika kwambiri wotseka kwa nthawi yayitali?
Question (English): Which company has the most stable closing prices over time?
Table: mse_daily (difficulty: medium)
SQL: SELECT company_name, (MAX(close_price) - MIN(close_price)) FROM mse_daily GROUP BY company_name ORDER BY (MAX(close_price) - MIN(close_price)) ASC LIMIT 1;
Result: [('Blantyre Hotels Limited', 5.06)]