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Tuesday, November 19, 2024

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Adjustment of overnight gap

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 Chang Min (Leo) Chu, Quantitative Research Analyst at Antilles Capital LLC

 Sunday, September 21, 2014

Dear All, May I know when and why would you remove the overnight price jump or not to form a time-series for backtesting? Thank you Leo


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5 comments on article "Adjustment of overnight gap"

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 Colin Silver, Proprietary Trader

 Monday, September 22, 2014



The open 9:30 is usually the highest volume of the day ignoring the 4:00pm futures settlement margin requirements. This inflated volume would have been the volume traded to move price from the close to the open had the market been open. ie the overnight gap.


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 Chang Min (Leo) Chu, Quantitative Research Analyst at Antilles Capital LLC

 Monday, September 22, 2014



Colin: with high frequency around, is the volume data still give good and non-distorted information?


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 Jack Shuman, Futures Trader at HedgeFund LIVE

 Monday, September 22, 2014



the data is the data-------regardless of hi-frequency or lo frequency or no frequency


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 Colin Silver, Proprietary Trader

 Monday, September 22, 2014



Absolutely, there is no distortion in volume as it is the actual traded contracts. The distortion happens in the DOM with the fake bid and asks.


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 Larry Kase, Financial Analyst and Hedge Fund Principal

 Friday, October 3, 2014



No price prints can be removed for any reason aside from bad print outliers that find their way into the consolidated reporting system. Occasionally an out of sequence print appears when it should not. Such errors seldom survive without correction. The issue raised is highly relevant when considering the importance of validating whether or not an order can be executed. If gaps are ignored back testing often produces a result based upon an event, the transaction, that never happened nor could it have happened. Also, Jack is correct; data is data. We take whatever the tape gives us.

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