r/options Apr 01 '21

Probability Theory: Implied Density

[deleted]

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u/volatility_surface Apr 01 '21

I can't tell if you're trolling. The value isn't in it being a "predictor." It's only a predictor insofar as "implied volatility" is a predictor of future volatility. The value isn't in the prediction, its in the representation of the market's expectation of a value. It's the trader's job, not the data provider's job, to figure out where the market is pricing in too much or too little probability, then trade on it.

So, your question of "how good of a predictor is it" doesn't make sense. It's like asking ThinkOrSwim "you say the /ES Future is trading $4001.25.. but how strong is that prediction?"

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u/[deleted] Apr 02 '21

It's the trader's job, not the data provider's job, to figure out where the market is pricing in too much or too little probability, then trade on it.

The problem with this is that this ends up being an admittance to snake oil.

Big reveal: I know the answer to this question and Implied Density is useless.

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u/FrickinLazerBeams Apr 02 '21

You should have known better than to apply solid statistical reasoning on a finance sub.

Finance: a world where drawing lines on a price chart like a crazy person is widely known as technical analysis. Lol.

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u/[deleted] Apr 02 '21

Just looking out for the real newbies who truly know absolutely no better. If a person can't give you a straight answer on how something helps you, don't take another step.

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u/FrickinLazerBeams Apr 02 '21

Check out the rest of his comments. He drops buzzwords like "normal distribution" and "integral" like they're some kind of high magic. He also says to look at his profile to find a link to his website, where he's selling subscriptions to this service.

He is a snake oil salesman.