Twitter Inc (NYSE:TWTR) also had 20 less shareholders by the end of the third quarter than it did at the start of it, but unlike SunEdison, the investors we track are also quite bearish in general towards the social media company, owning just 1.40% of its shares now. After a big dip in the second quarter, Twitter shares fell again in the third quarter, as investors continue to worry about Twitter's stagnant user growth. On the other hand, the company has begun to do a better job monetizing its service, with revenue continuing to make strong (though slowing) year-over-year leaps. Nonetheless, there don't seem to be many catalysts for growth for the stock unless Twitter can find ways to attract more users to its service. Israel Englander's Millennium Management and Jim Simons' Renaissance Technologies were two of the firms to sell out of Twitter Inc (NYSE:TWTR) last quarter.