Morgan Stanley analyst Katy Huberty has cut her price target for Apple stock from $630 to $600, writes Fortune. The change is based on "supply chain data points," which have led her to slash her predicted iPhone shipments for the March quarter from 37 million units to 33 million. Mac units have likewise been adjusted downward from 4.359 million to 4.218, although iPad estimates are up from 19 million to 21 million.