What are well-mannered websites to find free historical option prices?
Answers:
There isn't one. I don't even conjecture such a entity exists on a premium site.
The judgment is twofold:
One is that for respectively stock issue, at hand are literally hundreds of possible option that would inevitability to be tracked. Figure upwards of at least possible twenty different strikes for respectively possible month. It boggles the mind.
The second is liquidity. Options prices translation minute by minute while the souk is uncap, but near is relatively little buying and selling. If you look at an option quote, the second transaction price is commonly far different from the current bid/ask.
Since the picking price is a function of the intrinsic utility of the likelihood next to respect to the underlying warranty, remaining time utility, and volatility, you can commonly receive a thumbnail opinion of where on earth an option price have be by looking at a volatility chart. But you really don't trouble where on earth it's be, you thought where on earth it's going. Websites approaching optionetics.com can describe you how the volatility is compared to history. You can win an impression of what the bazaar think from the bid/ask spread (example: if the stock is a primary bull, the bid/ask spread might be as much as $0.50). The delta and gamma will enlighten you how prompt you can trade name or lose money when the underlying protection moves.
If you're looking for a cheat to try to shortcut your benevolent of the derivatives bazaar, stop looking. Only experience will contribute you a get the impression for this perverse side of trading.
Good luck!