To show the calculations I've used, here's the same chart which...

To show the calculations I've used, here's the same chart which includes the stock prices for the BUY and the SELL for each trade and the calculated profit or loss (in green or red as appropriate). All these BUY & SELL prices are the OPEN price for the day following the trade signal. It's these P&L values that I compound to arrive at the overall P&L for this particular stock over the period of interest (300 weekly bars in this example), adjusted into an annual figure, further adjusted by the Time In The Market, to arrive at the TROC value on the top line. This represents what I call the Trader's Rate Of Change (TROC), being the effective return normalised for time & the opportunity cost of being in cash or holding a trade in this stock. I use the TROC to compare the relative strength between stocks to help decide upon one stock opportunity over another.

I hope this explanation makes sense - happy to field any questions you may have.

Rgds