Market Nifty CPSE index tanks 9% in 1 month. Is it still a good investment? Updated : July 24, 2019 11:55 AM IST Nifty CPSE index has been under pressure in the last 1 month, down over 9 percent as compared to a 4 percent fall in Nifty50 index. Analysts expect the weakness in frontline PSU names to end soon. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.