Market capitalization multiplied by free float, the portion of a company's value actually available for public trading (the same convention the PSEi, MSCI, and FTSE use to weight an index). Most rankings on PSEye use plain, unadjusted market cap instead. The exception is Manulife (MFC) and Sun Life (SLF): both are foreign dual-listings whose reported share count is mostly Toronto stock that barely trades here, so they're ranked by float-adjusted cap instead, to keep that mismatch from dominating the board.
See every term in the full PSE investing glossary.