India stocks hit record highs after exit polls predict a decisive Modi election win; Adani surges
By what percentage did the Nifty 50 index and S&P BSE Sensex Total Return index increase after the exit poll results were announced?

The Nifty 50 index and S&P BSE Sensex Total Return index both increased by more than 3% after the exit poll results were announced, which projected Prime Minister Narendra Modi and his Bharatiya Janata Party-led alliance to secure a rare third consecutive term in power.
When was the last time both indexes logged their best intraday gains prior to this recent surge?

The last time both the Nifty 50 index and S&P BSE Sensex Total Return index logged their best intraday gains prior to this recent surge was on February 1, 2021, according to LGEG data.
What record levels did the Nifty 50 index and S&P BSE Sensex Total Return index reach following the exit polls?

The Nifty 50 index and S&P BSE Sensex Total Return index reached record levels following the exit polls, with both indexes rising more than 3%. The specific record levels are not mentioned in the provided information. However, it is mentioned that both indexes hit record level highs and logged their best intraday gains since February 1, 2021.