
Originally Posted by
chris_is_here
Great thread, I love playing options, the mathematics behind it is complex, but ultimately, you have to go with your gut.
I'll assume you know about the fundamentals of Black Scholes, which is the theoretical basis for option pricing...however, in practice, I've noticed that option prices tend to include an additional component not factored into the Black Scholes, which is a trend premium...meaning that the price on a call option on a stock making a strong up-move, for example, will always exceed the theoretical Black Scholes price. Vice versa for a put on a stock getting hammered.
I've won and lost on options (mostly lost) but I'll share one of my successes I've had here, maybe it will give you some insight.....always, the best trades I've made have been "against the grain". For example, several years ago, I bought out-of-the-money puts on a company that had received a take-over bid. The stock doubled overnight in response to the offer, even though management made no move to accept it. The prevailing view at the time was that management was just being coy and waiting for a stronger offer before accepting the buyout. However, I noticed that the management of the company held no shares and, thus, had no stake in the company. They also had comfortable salaries so I wagered that they would not sell at any price, since they would be signing their own termination notices, without any gain to themselves.
At the time of the offer, I put in low-ball bids for out-of-the-money puts with a 6-month expiry and a strike price just above the pre-offer stock price - I was pretty surprised when my bids got taken, since the prices I was bidding at were well below the theoretical prices. What I think happened was that there were so few put buyers at the time, that there was no frame of reference for a reasonable offering price on puts - all the action was on the call side, in anticipation that the buyout would eventually get approved. Whoever took the other side of the trade probably figured that it was free premium for them and that the theoretical pricing was moot.
Needless to say the deal fell through and the payoff was nice. Opportunities like that are rare but they are nice when they do come around. I will also say that I've never made money trading with the conventional wisdom. For example, right now, everyone is down on Facebook and people are saying "buy puts on FB, it is coming out of lockup and the insiders have billions of shares to sell" - all of which is true. However, when everyone is thinking and moving in the same direction, it is more likely than not reflected in the prevailing prices. FB may be a dog, but at $19, it is down 50% from it's opening price and a lot of the downside has already been factored into the price of the stock and the options. Prevailing wisdom says FB is a $10 stock, but I'l bet it will be a while, if ever before it ever gets to that level. The November at-the-money puts on FB are at $2 right now. If FB catches a bid and moves back up to $22 or so in the coming weeks, you will need a real big down move after that to move those puts into the money. But then again, who knows?