Presidential hopefuls Hillary Clinton and Donald Trump covered a lot of important issues during Monday night’s 1.5-hour debate. However, one issue that was not raised was the topic of prescription drug prices.

The first time most traders ever heard about Amazon.com, Inc. AMZN 0.32%, the company was disrupting bookstores like Barnes & Noble, Inc. BKS 0.27%, Books-A-Million and the now-bankrupt Borders Books and Music.