In what is now an August tradition, Heard on the Street’s columnists around the world have begun to publish their stocks picks and pans for the coming year. They will range from household names to companies you might never have heard of. On Tuesday tech-specialist Dan Gallagher recommended shares of Onsemi. AstraZeneca, which has a pipeline practically overflowing with cancer therapies, also could give investors a bonus obesity treatment down the road, says David Wainer.