Hat tip to you, Bank of America analyst Curtis Nagle for adhering to some very basic principles of investing, which still matter even though meme stock traders couldn't care less about valuation methodologies, free cash flow outlooks or margin structures. After seeing Bed Bath & Beyond ( BBY ) shares explode 62% on June 2, Nagle said in a research note on Friday that it's time for him step back from the volatile stock. "This [move in the stock] comes in the context of no significant updates from Bed Bath & Beyond or any other material news. Bed Bath & Beyond did release a press release on 6/2/21 regarding the launch of three new private label brands but this was already expected by investors and is not material, in our view. Instead we believe that the rapid appreciation in Bed Bath & Beyond's shares is being driven by another surge in interest and trading led by retail investors," Nagle said. "This follows a very large but short-term move in late January of this year.