This week, four chemicals stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an "A" ("strong buy") or "B" overall ("buy").

The grades of four chemicals stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an "A" ("strong buy") or "B" overall ("buy").

Four chemicals stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an "A" ("strong buy") or "B" overall ("buy").