"MEX SC" is spelled M-E-X-S-I, using the International Phonetic Alphabet (IPA) symbols /mɛks saɪ/. This abbreviation stands for Mexican Stock Exchange, which is the only stock exchange in Mexico. It plays a crucial role in the country's financial system by providing a platform for companies to raise capital and investors to buy and sell securities. The spelling of "MEX SC" using IPA phonetic transcription accurately represents the pronunciation and helps avoid confusion when communicating about the Mexican Stock Exchange.