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General Electric Company (NYSE:GE) (CNBC)
General Electric shares jumped more than 5 percent in trading Tuesday, on track for their best day in nearly three years. Shares of the industrial conglomerate last surged at least this much on April 10, 2015, when GE’s stock closed up 10.8 percent. There was speculation among traders Tuesday that some big investors may be starting to nibble at the downtrodden conglomerate. “We don’t have a comment on the stock price,” a GE spokesperson said in a statement to CNBC.

Longfin Corp (NASDAQ:LFIN) (Benzinga)
Longfin Corp. declined 33.7 percent to $39.3303 after declining 16.62 percent on Monday. FTSE Russell release showed that the co. failed to meet minimum 5% free float requirement as of February 14 cut-off date and will be removed from the Russell Indexes on March 28 after the close.

Enphase Energy Inc (NASDAQ:ENPH) (The Motley Fool)
What happened: Shares of inverter manufacturer Enphase Energy (NASDAQ:ENPH) jumped as much as 13.4% in trading Tuesday after getting a buy rating from an analyst. Shares settled slightly lower as the day went on, but were still up 9.3% at 1:35 p.m. EDT. So what: Analysts at B. Riley FBR initiated coverage on Enphase Energy with a buy rating and a $6 per share price target. As of yesterday’s close, the price target implies 22% upside for the stock, usually projected over the next year.

Overstock.com Inc (NASDAQ:OSTK) (Yahoo Finance)
Overstock (OSTK): Shares are dropping in early trade, down around -8.9%. The discount e-tailer and now bitcoin player announced that it intends to offer 4,000,000 shares of its common stock in an underwritten public offering.

Lam Research Corporation (NASDAQ:LRCX) (MarketWatch)
Shares of Lam Research Corp. LRCX, -3.55% are up 2.1% in premarket trading Tuesday after Mizuho analyst Vijay Rakesh initiated coverage of the stock with a buy rating and a $250 price target. “The best is probably yet to come as we believe 2019 could see multiple new mega-fabs and potential China spend,” Rakesh wrote. He has an upbeat outlook on growth in wafer fabrication equipment (WFE) given heightened memory spending.