Quote from GATrader:
Analyzing pc ratio w/o analyzing the IV changes that transpired is kinda dangerous. Case in point.. Brazil comes in and sells a ton of sugar puts for next 2 weeks, Put OI goes up since they are opening trades hence ratio goes up, is that bearish..of course not. You can't discern that w/o analyzing IV for it changed from 50 down to 40 together with PC ratio which suggest hi prices instead of low .