What is a cash-settled option?

This is an options contract, put or call, that can be exercised at any time prior to expiration. Stock, exchange-traded funds, and some index options also settle American-style. The alternative is the European Style Option which can only be exercised at expiration.

This is also known as the Strike Price, it is the price at which a call buyer can call/buy the underlying Stock/ETF or a put buyer can sell the underlying Stock/ETF See also: Options Exercise, Exercise Settlement Value, Automatic Exercise

A delayed start option is an option that does not have an exercise price when first introduced for trading but instead has an exercise price setting formula pursuant to which the exercise price will be fixed on a specified future date. 

A Golden Sweep Option (GSO) is popularized by the folks at Flowalgo and it is basically a very large order that hits the market and takes all or most the inventory/offers at once. This is usually a very high probability signal given the aggressive stance of the trader(s) behind it.  These orders can be both bullish…

This is a measure of Historical Volatility computed as the annualized standard deviation of returns over a period of days (20, 30, 90 days). See also Implied Volatility & Historical volatility

Order Flow is basically the study of the way a stock reacts to the limit or market orders that are placed at certain price levels.  When it comes to Unusual Options Activity, the order flow principles are the same, in that you want to pay attention to how the Option price, and the price of…