Watch out for these penny stocks locked in the upper circuit on December 16 Watch out for these penny stocks locked in the upper circuit on December 16 Sugar stocks were among the top-gaining stocks today. Kiran Shroff / Friday, December 16, 2022 / Article rating: 4.2 Wall Street indices ended lower overnight after the latest Fed rate hike. Mirroring the weakness on Wall Street, the majority of global indices witnessed a downturn.