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Viper Trading Systems Indicator

  #97 (permalink)

United States of America
Trading Experience: Advanced
Platform: NT
Posts: 1,149 since Aug 2009

tomgilb View Post

Please explain why analysis based on reloaded charts would be far from accurate.

It seems to me that the script would react the same to the price action regardless, except for slippage and historical data errors. The backtest analysis should not be significantly different from what would have actually happened.


On a 24 hour period, or even a few days, NT doesn't have material historical data errors for tick or range charts, but going back as little as a week it can. Time charts don't have such an issue.

The SIM refresh that Viper employs to post its daily results are the ideal prices the system would have fired the trade.

The killer is slippage.

Although I can't confirm it, Viper once had about 250 paid subscribers after the Russell was released. Who knows how many were trading live, but if half were at the two contract level, that's 250 contracts firing AT THE MARKET and the Russell simply can't handle that sort of demand without prices shooting away from the AT original entry; it's simply way to thin and at times only less than 50 contracts are available on a side.

Thus, live traders had much worse results than the hypothetical Viper results.

Last edited by Zoethecus; January 24th, 2010 at 07:15 PM.
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