The best-performing stock market in Asia for much of this year has lost that title in less than a month.
As the S&P BSE Sensex Index sank into a correction Oct. 5, posting its biggest weekly plunge in more than two years, investors began paying up to hedge against more declines. The cost of bearish NSE Nifty 50 Index options jumped to its highest level since August of last year relative to the price of bullish contracts, data compiled by Bloomberg show.
