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Is there a sell-side version of dollar-cost averaging?
None of your options or strategies are ideal. Have you considered looking at the stock chart and making a decision? Is the price currently up-trending, or is it down-trending, or is it going sideways? As Knuckle Dragger mentions, you could just set a limit price order and if it does not hit by Friday you can just sell at whatever price on Friday. However, this could be very damaging if the price is currently down-trending. It may fall considerably by Friday. I think a better strategy would be to place a trailing stop loss order, say 5% from the current price. If the stock starts heading south you will be stopped out approximately 5% below the current price. However, if the price goes up, your trailing stop order will move up as well, always trailing 5% below the highest price reached. If the trailing stop has not been hit by Friday afternoon, you can sell at the current price. This way you will be protected on the downside (only approx. 5% below current price) and can potentially benefit from any short term upside.