As a result of the Scripbox Portfolio Scan there is a gap of 2 to 6 working days between withdrawal from old funds and reinvestment into the newly recommended funds. Will I miss out if the stock market does really well in that period?

The simple answer is yes, there is a possibility of this happening.

We built Scripbox for disciplined long-term wealth accumulation. While short-term market swings can certainly influence the price at which you buy or sell mutual fund holdings, we believe that a long-term approach works over trying to time the market.

Therefore, you should not worry about missing out due to a market rally while re-investment is in progress, nor should you feel happy if you sit out a stock market downturn during the same period. These effects average out over time.