British Prime Minister Theresa May has turned in Article 50, a letter which triggers the process of Brexit. The entire process of Britain leaving the European Union could take as long as 2 years. It's a high stakes day for Samsung. The South Korean tech company will unveil its Galaxy S8 smartphone today, the first since the Note 7 exploding battery problem of last year. An impressive and innovative phone will go a long way in Samsung putting its woes behind it. Apple's (AAPL) - Get Report stock continues to hit record highs. Shares closed at the 5th record high close of March Tuesday and the 11th record high this year. The latest move higher was triggered by an UBS analyst who said he could envision a scenario that would boost the stock by about 40% over the next few years. Apple stock has been soaring since its earnings report in late January and in anticipation of the next iPhone release this fall.