Beginning with SMCI's September quarter results reported in mid-November, a number of positive developments have occured with only a minimal positive impact on the shares.
On November 15, SMCI reported a big Sept '18 quarter beat of ~$957M/$0.68 vs consensus of $838M/$0.44.
More importantly, in conjunction with the release, they put out an 8-K showing the expected impact of their ongoing restatement of FY15-17 results - the changes suggested are immaterial.
Subsequently, a Washington Post reporter wrote that Bloomberg (the source of the 'China Hack' story on SMCI that crushed the stock in October) has assigned a new reporter to re-investigate.
SMCI just filed a new 8-K stating that their 3rd party investigation revealed no evidence to support Bloomberg's "China Hack" claims and they sent a letter to customers saying so.