gamestop mania has spilled over into a popular exchangetraded fund as the wallstreetbets craze reaches beyond shares favored on social media the fund state street ’s spdr sp retail etf was created in 2006 to give investors broad exposure to mallstore firms its shares have surged 23 this year far outstripping a 4 gain in the sp 500 despite the uncertain outlook for retail behind those gains are the traders who congregate on socialmedia platforms such as reddit’s wallstreetbets forum and whose enthusiasm has turned this mundane investment into a roller coaster