Pinduoduo really can't stand seeing its own stock do well, shorting itself once a year. After today's earnings call, the stock was up as much as 12% pre-market, but now it's down -2.5%. That's a nearly 15-point swing. Truly a fascinating company, but every time the earnings report brings bad news and the stock drops, it slowly climbs back up afterward. The core is still a strong business foundation.