These companies cannot justify the sharp increase in their share price. Meme stocks have exhausted investors this year, and we’re only through the first quarter.Retail investors have taken to social media sites such as r/WallStreetBets on Reddit to work themselves and others into an irrational frenzy over stocks that they then pump up to unreasonable and unsustainable levels.From outdated retailers such as GameStop to companies teetering on the edge of insolvency such as movie theatre chain AMC