Micro-cap stocks, with market capitalizations under $300 million, sit at the frontier of public markets. They can range from early-stage growth stories to tiny niche businesses flying under the radar of institutional investors.

For adventurous investors, micro caps offer lottery ticket–like potential. A single breakout success can generate extraordinary returns, and with less analyst coverage, opportunities sometimes emerge before the broader market takes notice. Dividend investors will rarely find candidates here, as most micro caps reinvest heavily just to sustain growth.

But the risks are significant. Thin trading volumes can amplify price swings, business models may be unproven, and companies often lack the financial cushion to weather setbacks. Micro caps can add excitement to a portfolio, but they demand careful due diligence and a tolerance for volatility.

Our micro-cap stocks list includes all NYSE and NASDAQ-listed stocks in this market capitalization range.

As shown, risk and return shift as you move from mega cap giants to smaller growth names. Visit our market cap stock lists to explore how each group could play a role in your portfolio.

• Mega-cap stocks ($200+ billion)
• Large-cap stocks ($10 billion to $200 billion)
• Mid-cap stocks ($2 billion to $10 billion)
• Small-cap stocks ($300 million to $2 billion)
• Micro-cap stocks (less than $300 million)