Where to Find Option Greeks
There are many sources from which to obtain greeks. The Internet is an
excellent resource. Googling “option greeks” will display links to over four
million web pages, many of which have real-time greeks or an option
calculator. An option calculator is a simple interface that accepts the input
of the six variables to the model and yields a theoretical value and the
greeks for a single option.
Some web sites devoted to option education, such as
MarketTaker.com/option_modeling , have free calculators that can be used
for modeling positions and using the greeks.
In practice, many of the option-trading platforms commonly in use have
sophisticated analytics that involve greeks. Most options-friendly online
brokers provide trading platforms that enable traders to conduct
comprehensive manipulations of the greeks. For example, traders can look
at the greeks for their positions up or down one, two, or three standard
deviations. Or they can see what happens to their position greeks if IV or
time changes. With many trading platforms, position greeks are updated in
real time with changes in the stock price—an invaluable feature for active
traders.