Deixo a explicação do também muito falado Put/Call ratio:
-A ratio of the trading volume of put options to call options. It is used to gauge investor sentiment.
For example, a high volume of puts compared to calls indicates a bearish sentiment in the market.
It is widely known that options traders, especially option buyers, are not the most successful traders. On balance, option buyers lose about 90% of the time. Although there are certainly some traders who do well, would it not make sense to trade against the postions of option traders since most of them have such an abysmal record? The contrarian sentiment put/call ratio demonstrates that it does pay to go against the options trading "crowd." After all, the options crowd is usually wrong.
- Put/call ratios provide us with an excellent window into what investors are doing. When speculation in calls gets too excessive, the put/call ratio will be low. When investors are bearish and speculation in puts gets excessive, the put/call ratio will be high.
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