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Tech slammed as Twitter's Dorsey testifies before House committee

Stocks are down, with the Nasdaq getting slammed, as big-tech execs get grilled on the Capitol Hill. Plus, Twitter shares tumble as CEO Jack Dorsey testifies before Congress — we have the latest on DC’s big tech hearings.

And Amazon is partnering with a big name in fashion retail to build out its unique delivery service. Plus, the call of the day sees the world’s largest retailer getting a bullish note from Wall Street, claiming its sales turnaround is real. Catch The Final Round at 3:30 ET p.m. with Jen Rogers, Yahoo Finance markets correspondent Myles Udland, and Yahoo Finance Editor-in-Chief Andy Serwer.