I was flipping through my notes and came across interesting terms given by investment community to classify companies with different market capitalization. I listed here for easy quick reference.

Mega Cap
More than $200 billion market capitalization

Large (Big) Cap
Between $10 billion and $200 billion

Mid (Middle) Cap
Between $2 billion and $10 billion

Small Cap
Between $300 million and $2 billion

Micro Cap
Between $50 million and $300 million

Nano Cap
Less than $50 million