PSTX - Poseida Therapeutics to join Russell 2000 index September, 18 2020 08:43 AM Poseida Therapeutics Inc. Poseida Therapeutics (NASDAQ:PSTX) to join the small cap Russell 2000 index, effective at the open today.More news on: Poseida Therapeutics, Inc., Renaissance Capital Greenwich Funds - Renaissance IPO ETF, Read more ...