Here's how a vaccine and the election are shaping markets

David Katz, CIO of Matrix Asset Advisors, and Tony Roth, CIO of Wilmington Trust, join "Squawk Alley" to discuss the market's reaction to Pfizer's positive vaccine developments and the election of Joe Biden to be the next president. We have a lot more clarity today than we did a week ago, says Katz. The Pfizer news today is very significant. It's going to happen, whether it happens in December or January. It takes a lot of risk off the table in terms of the economy, he adds.