Plunging commodities and a stronger U.S. dollar's drag on earnings held stocks down this week, and investors may want to look elsewhere if the trends continue, independent investment consultant David Darst said Friday.

The major averages slipped more than 2 percent this week, as the Dow Jones industrial average fell nearly 3 percent. Investors overlooked some strong economic data, including jobless claims and existing home sales, as commodities and currency drove selling this week, Darst noted.