public void UnsubscribeFromSymbolTrades(InstrInfo[] instr)
{
if (instr[0].type == InstrInfo.EType.EQUITY)
{
eqLastTrdClient.Unsubscribe(instr);
}
else if (instr[0].type == InstrInfo.EType.OPTION)
{
optLastTrdClient.Unsubscribe(instr);
}
}