Watch out for these penny stocks locked in the upper circuit on May 20 Watch out for these penny stocks locked in the upper circuit on May 20 In the morning trade, the benchmark equity indices extended early gains or rather, jumped. Kaustubh Bhosale / Friday, May 20, 2022 / Article rating: 3.5 All the sectoral indices on NSE rose with metal, real estate, and auto stocks gaining the most. Besides, Nifty traded just above 16,150 points.