Abbott Labs CEO, Affirm CEO, Roblox CEO & J2 Global CEO

The Dow plummeted 474 points today and Jim Cramer is breaking down today's bearish market downturn. Then, Abbott Labs CEO Robert Ford joins Cramer for CNBC's "Healthy Returns" Summit. Next, as tech starts to rebound from its sell off, what's next for Affirm Holdings after its recent IPO? CEO Max Levchin is digging into the stock's debut and where it's headed. Then, even as the broader market sunk, Roblox soared 21% today, and CEO David Baszucki is checking in to talk about one of the hottest new names on Wall Street. Plus, Cramer's exclusive with J2 Global CEO Vivek Shah.