Hi Mike,

Welcome to the Forum.

I would have to agree with you the information in the MS Users Manual pertaining to these values could use some embellishment! I am going from memory here, and you didn't provide me enough information to make a guaranteed correct answer, but here goes anyway...

Let's say you have told the EST to enter on OPEN and exit on CLOSE, then:
enterTradeDataArray = array of OPEN prices, and
exitTradeDataArray = array of CLOSE prices.

(I hope this is going to be the best way to explain this??)

During the period of a trade, MS will look at the highest and lowest values of the enterTradeDataArray and exitTradeDataArray. These are the values compared with the trade's entry and exit prices, to return the efficiency values:

Opening Efficiency:
[ (Highest enterTradeDataArray value during the trade) - tradeEntryPrice ] /
[ (Highest enterTradeDataArray value during the trade) - (Lowest enterTradeDataArray value during the trade)]


Closing Efficiency:
[ tradeExitPrice - (Lowest exitTradeDataArray value during the trade) ] /
[ (Highest exitTradeDataArray value during the trade) - (Lowest exitTradeDataArray value during the trade)]


Total Efficiency:
[ tradeExitPrice - tradeEntryPrice ] /
[ (Highest enterTradeDataArray value during the trade) - (Highest exitTradeDataArray value during the trade)]


Most Favourable:
These are the highest and lowest exitTradeDataArray values during the trade.



Hope this helps.

wabbit [:D]

P.S. Personally, I have never seen much value in these efficiency scores; they only reflest the "what ifs" during the trade period, they don't reflect the "what ifs" either side of the trade e.g. there is nothing in these score to indicate that if you hald onto your long trade for another three bar the price skyrocketted and you would have made a fortune! Make of them what you will. [:)]

P.P.S. Another personal observation; using the extreme values of HIGH and LOW during the trade would be more meaningful than using the extremes of the enterTradeDataArray and exitTradeDataArra(s) ??