tsx

TSX is an acronym with multiple, unrelated meanings, most commonly referring to either a major financial exchange or a programming file format.

In finance, TSX denotes the Toronto Stock Exchange, Canada’s principal stock market. Located in Toronto and operated by the TMX Group, the TSX lists large-cap companies across sectors such as financial services, energy, mining, and communications, and it also supports trading in ETFs, bonds, and other instruments. The exchange functions alongside the TSX Venture Exchange (TSXV), which serves smaller, growth-oriented companies. A key benchmark associated with the TSX is the S&P/TSX Composite Index, which tracks the broad performance of Canadian equities. The TSX is integrated with international markets through cross-listings and various trading platforms, contributing to Canada’s role in global finance.

In computing, TSX refers to the TypeScript JSX file extension, used when writing React components in TypeScript. Files with the .tsx extension can contain both TypeScript code and JSX syntax, which resembles HTML and enables the creation of UI elements in a typed environment. The TypeScript compiler (tsc) processes TSX files and emits JavaScript, translating the TSX syntax into executable code. Configuration for this process is typically specified in a tsconfig.json file, where the jsx option (for example, "react" or the newer "react-jsx") controls how JSX is transformed. TSX is distinguished from plain TypeScript (.ts) by its support for JSX, and it is commonly used in modern React projects alongside bundlers such as Webpack, Vite, or esbuild.

Summary: TSX can refer to a major Canadian stock exchange or to a TypeScript file type that enables JSX in React development. Context usually clarifies which meaning is intended.