def...I am trading HSI with IB stop orders, but have experience some very very bad fills( like 30 point slippage) with these stop orders..of course, the bad fills were all under "fast market" conditions, but when I check time and sales..it seems that once my stop is hit, there was a considerable amont of fills before my order was executed..the last time it happen, there was five ticks (after my stop is hit) before my order is executed.. and I got filled at the exact High... I spoke to IBHK and someone told me it was the exchange's problem, but this has really happen too many times to be a coincidence. it seems me that the lag is experience between the time the stop price is hit and the actual time it's sent to the exchange.. I don't want to draw any conclusion at this time, but for anyone trading on IBHK, you might want to be careful with your stop orders, use a stop-limit or just executed it manually... ( the my experience is that these option often result in worse fills expecially when the market is movign..) My question is is there a possible that there could be too many stops at a price point that would result in a traffic jam on your server with the result of delay in fills?? def...since you are in HK..can u take a look this for me??