Five mid-cap stocks including Applied Optoelectronics and Chart Industries stand out for March 20, 2026.

MarketBeat highlights five mid-cap stocks to watch as of March 20, 2026: ProShares UltraPro Short QQQ, Direxion Daily TSLA Bull 2X Shares, Applied Optoelectronics, Ondas, and Chart Industries. These stocks, with market caps between $2 billion and $10 billion, offer a balance of growth potential and stability. Each company operates in distinct sectors such as fiber-optic networking, private wireless solutions, and gas and liquid process technologies, making them notable for investors seeking diversified opportunities in mid-cap stocks.