Market watch: What does the F&O market suggest about trade on December 17? Market watch: What does the F&O market suggest about trade on December 17? The Nifty 50 put call ratio (PCR) closed at 0.58 for the day. Shashikant Singh / Thursday, December 16, 2021 / Article rating: 4.0 Activity in the F&O market for the weekly expiry on December 23, 2021, shows 17300 to act as pivotal point now.