What is the fine-grained topic of the following text: In April 2018, TCS became the first Indian IT company to breach $100 billion market capitalization, and second Indian company ever (after Reliance Industries achieved it in 2007) after its m-cap stood at Rs 6,79,332.81 crore ($102.6 billion) in Bombay Stock Exchange. Only return the topic.
TCS breaching $100 billion market capitalization in 2018.