Watch out for these penny stocks locked in the upper circuit on March 13 Watch out for these penny stocks locked in the upper circuit on March 13 Breathing a sigh of relief, US authorities approved a plan for Silicon Valley Bank to protect depositors and ensure that no losses would be paid by taxpayers on Sunday (March 12) night. Kaustubh Bhosale / Monday, March 13, 2023 / Article rating: 4.4 The Indian equity benchmarks Sensex and Nifty50 began the week with slight losses on Monday, as global markets reacted negatively to the closure of US-based SVB Financial Group.