Does buying when MACD crosses above zero catch new trends?

We want to catch the start of a new uptrend by watching for momentum to turn positive, using the MACD line crossing its own zero line rather than crossing its signal line. Compute MACD using the standard 12 and 26 period exponential moving averages of the close (MACD line = 12 period EMA minus 26 period EMA). Enter long when the MACD line closes above zero after closing below zero on the prior bar. On the entry bar, measure the 14 period ATR and place a protective stop 2 ATR below the entry price. Size the position so that hitting that stop loses exactly 1 percent of account equity. Round down to a whole number of shares. Take profit at 2.5R, that is two and a half times the distance between entry and stop, placed above the entry. Also exit at the next open if the MACD line closes back below zero before either level is hit. If the position has been held for 40 trading days without resolving, exit at the next open. Long only. One open position per ticker at a time. No leverage and no pyramiding.