Does the Percentage Change condition refer to the underlying at the time of order placement?

Unless specifically modified, the default trigger method for all stocks is the "Last" method as described within the User's Guide. For US options the default trigger method is the "Double bid/ask" method, where two consecutive ask price (bid price) values must be less than (greater than) or equal to the trigger price, and the second bid or ask must have greater size if it is at the same price level as the first bid or ask.  For Forex cash pairs (for example EUR/USD currency pair), the default trigger method is single "bid/ask", where the ask price (bid price) value must be less than (greater than) or equal to the trigger price. For all other contracts like Futures and Futures Options contracts the default trigger method is the "Last" method as described within the User's Guide. Find information on the…

A conditional order is an order that will automatically be submitted or cancelled ONLY IF specified criteria for one or more defined contracts are met. You can use stocks, options, futures or security indexes to trigger a conditional order. Types of conditions include Price, Margin Cushion, Volume, Percentage Change, Trade or Shortable Shares…

It is not possible to configure an attached Stop Loss order to trigger at different price levels for order size increments less than the Parent order's total quantity. For example, if you create a Parent Buy order for 1,000 shares and try to attach two Sell Stop orders for 500 shares each at different stop trigger prices your order will not be accepted. Likewise, if you try to use the Scale fields to scale out of a position the order will not be accepted…

Beta is a measure of a company's common stock price volatility relative to the market. Reuters Beta is the slope of the 60 month regression line of the percentage price change of the stock relative to the percentage price change of the local index. Beta values are not calculated if less than 40 months of pricing is available. In general, a high Beta suggests higher risk…