On the technical picture, Cramer warned that the VanEck Semiconductor ETF and Roundhill Memory ETF appear to have formed double-tops, a bearish signal that can suggest a rally has run its course. "Worse, the ones that don't have double tops have the most pronounced head and shoulders patterns — that some people think is even more negative — to the point where the only way out seems to be lower," he said. "To the seasoned chartist, these stocks seem to have no bottom." He also wants the Nasdaq Composite and ...