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Hello, I am an energy fund manager and I am interested in daytrading the 
CME's S&P 500 and the CME's Nasdaq 100 futures contracts.  I am unsure about 
the proper slippage estimations. The following are only based on my personal 
observation of the tick data: (1) since the Nasdaq's bid/ask value is usually 
2 full points increment of $200, the amount would be a minimum of $400 for a 
round turn, and (2) since the the S&P's bid/ask value is usually a .20 - .30 
point increment of $50 - $75, the amount would be a minimum of $100 - $150 
for a round turn.  
Please give me a reality check as well as persnal experience with regards to 
fast and slow markets.  Assume the contract quantities would be "medium sized 
orders."
 
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