Financial instruments are subject to minimum price changes or increments which are commonly referred to as ticks. Tick values vary by instrument and are determined by the listing exchange. IB provides this information directly from the Contract Search tool on the website or via the Trader Workstation (TWS). To access from TWS, enter a symbol on the quote line, right click and from the drop-down window select the Contract Info and then Details menu options.  The contract specifications window for the instrument will then be displayed (Exhibit 1).

To determine the notional value of a tick, multiple the tick increment by the contract trade unit or multiplier.  As illustrated in the example below, the LIFFE Mini Silver futures contact has a tick value or minimum increment of .001 which, when multiplied by the contract multiplier of 1,000 ounces, results in a minimum tick value of $1.00 per contract.  Accordingly, every tick change up or down results in a profit or loss of $1.00 per LIFFE Mini Silver futures contract.

Exhibit 1