New issues can be tricky to invest in, since they tend to be more volatile. Some run up quickly and keep rising, while others might correct sharply before taking off. Fortunately, most will take a breather at some point to form a base, offering potential investors a chance to get in at a more proper entry. Ambarella (AMBA) more than doubled in price within the first three months of its Oct. 10, 2012, debut.