Before the Air Force developed its famous stealth fighters, it built a technology called terrain-following, which allows attack aircraft to fly at a constant low altitude – and avoid detection by staying ‘under the radar’ of the enemy. Flying under the radar remains an effective tactic for non-stealth aircraft to evade an enemy’s defenses. But it also works in the stock market, where there are plenty of high-quality stocks that just aren’t picking up a lot of analyst attention, even though they offer investors an array of attractive features. Sometimes, however, Wall Street does notice – and some high-rated analysts have been tapping under-the-radar stocks with Buy ratings recently.