Wall Street saw its biggest gains since the beginning of March after Emmanuel Macron won the first round of France's presidential elections. That prospect brings comfort to those worried France could exit the European Union. Toymaker Hasbro (HAS) - Get Hasbro, Inc. (HAS) Report climbed following an improved first quarter. Revenue in the U.S. rose 2% thanks to growth in gaming sales. The U.S. contributes more than half of sales to the top-line. Amazon (AMZN) - Get Amazon.com, Inc. Report rose after Wedbush Securities issued a bullish note on the stock. Wedbush's analyst said he sees the potential for substantial earnings growth. A price target of $1,250 is a roughly 39% premium to the Friday close. Halliburton (HAL) - Get Halliburton Company (HAL) Report exceeded analysts' quarterly estimates on strength in its North American activity to start the year. Total revenue climbed 1.4%, largely in-line with estimates.