Stifel analyst Michael Hoffman upgraded Republic Services to Buy from Hold and raised his price target for the shares to $90 from $86. The analyst, who admits he should have upgraded the shares post the company's Q1 results, says his new price target reflects the rolling impact of a better deal environment and gives Republic Services credit for spending at least $100M per year "for the foreseeable future on tuck-ins." The combination of "real price, stable volume and deals" supports walking margins up about 30 basis points per year to the low 30% level over several years, Hoffman tells investors in a research note.