Momentum continued to build for the broadband satellite stock.The share price of AST SpaceMobile (ASTS +5.99%), a development-stage maker of satellites used to deliver broadband, was surging last month on a combination of momentum leading into October, after it said it completed assembly of its Bluebird 6 satellite, and as it signed a new deal with Verizon Communications.By the end of the month, the stock price was up 64%, according to data from S&P Global Market Intelligence. As you can see from the chart ...