Watch out for these penny stocks locked in the upper circuit on March 29 Watch out for these penny stocks locked in the upper circuit on March 29 As traders roll over holdings in the F&O segment from the near month March series to April series, trading may be tumultuous today. Kaustubh Bhosale / Wednesday, March 29, 2023 / Article rating: 3.8 On Wednesday, Indian stocks opened higher, aided by broad-based gains across sectors and strong activity in global indices.