I am looking for risk measures such as standard deviation for asset prices such as stock prices and index fund prices. It would be a trivial task if I had the data but since I do not have the data I need some third party service to let me know it. If no service provides such basic risk measure, I am interested to know how on earth speculators are supposed to analyze the riskiness of assets, from the stars?
I know that there are probably as many risk measures as speculators but please keep the focus on standard deviation and why it is not apparently provided by many services such as Google Finance or Ycharts.com. Sure it may be obfuscated under other names but could not even find indicators for volatility or things like that.
So how can I get standard deviation for asset prices?