For over three decades, the closing price was the volume-weighted average (VWAP) of all trades between 3:00 pm and 3:30 pm. Nobody actually traded at that price.

It was a calculation, not a transaction. For long-term investors, nothing changes.

For index funds and traders, the closing routine is now different.

This story was reported by The Times of India. Read the full coverage at The Times of India.