A simple, Similarly-weighted normal return of all Zacks Rank stocks is calculated to determine the every month return. The regular monthly returns are then compounded to arrive on the annual return. Only Zacks Rank stocks included in Zacks hypothetical portfolios at first of monthly are included in the return calculations. https://www.social-bookmarking.org/cs/efektivni-chlazeni-prumyslovych-hal-prehled-vrf-systemu-a-chilleru