ISLAND to NASDAQ API Compatibility

Since TWS 10.16+, there is one more setting called “Compatibility Mode: Send ISLAND for US Stocks trading on NASDAQ” in TWS – Global Configuration – API – Settings. This setting will enable all of the contract definitions with ISLAND exchange to be still acknowledged. It is strongly recommended for TWS Users to start implementing the NASDAQ exchange definition.

However, this setting has not been introduced in IB Gateway yet. IB Gateway users still need to implement ISLAND exchange definition instead of the NASDAQ exchange definition.