FII (Foreign Institutional Investors) and DII (Domestic Institutional Investors) are institutional investors making significant investments in the Indian equity markets.
Their net purchase/sales data provides insight into the market trend and institutional participation:
Purchase > Sale: Net Inflow (Bullish)
Sale > Purchase: Net Outflow (Bearish)
These indicators are used by market participants to understand the sentiment and trend of institutional activity in the equity markets.