Have traded for over 30 years...So I will guess on the system. Find an industry leader who's earnings will beat estimates...Even by a few cents. If the earning aren't hit out of the park, there will be sells and adjustments to the price. Institutions, pension funds, and common investors will rush into the company because; industry leader, beat earnings, holds dividend, fine for widow and orphan investment, value investors, stays in the S&P 500, foreign investors, limited Apple stores moving into their buildings, CVS in their buildings (vaccine shots), people can not afford Costco memberships, quality is a little better than Walmart, will try and compete with Amazon for home delivery (last mile), pickup at stores so home delivery can not be stolen, harder to steal from than at Walgreens, can handle a $12-$15.00 per hour wage better than Walmart, cheap refinancing, committed clientele, not closed during Covid or new waves of Covid...Am I getting close??
Can you tell us how your system back tested in March and 2007-2009??