The markets seesawed back and forth today and ended the day mixed. The Dow 30 was higher by 1, the S&P 500 lost 2, and the Nasdaq 100 gained 16. News of emails from President Trump's son rocked the markets early but they mostly recovered. Tomorrow the focus will be on any comments from Amazon (AMZN  ), along with a testimony from the Federal Reserve chairwoman, Janet Yellen.

Amazon (AMZN  ) shares were slightly lower today as the tech giant held its highly publicized, annual Prime Day. The sales holiday which offers Prime members special deals for 30 hours, started Monday at 9 p.m. and carried into Tuesday. The company has reported that the best seller so far for the shopping day is the Amazon Echo, which is was on sale for 50% off. Other popular items are the Echo Dot and the Fire 7 tablet, along with some products offered by other retailers. Investors will be scouring the headlines going forward, looking for signs of success, or failure, though so far it looks like it is going well.

Snap (SNAP  ) was the other main focus today as shares broker below the $17 IPO mark. The parent company of Snapchat saw more weakness as Morgan Stanley (MS  ) downgraded the stock to market perform from outperform and lowered its price target to $16 a share from $28. In the analyst note the firm cited "increased competition from Facebook's Instagram and concerns about its ad product not evolving or improving as quickly as expected" as two reasons for the downgrade. Snap shares finished the day lower by 8.95%, at fresh new lows.

Michael Kors (KORS  ) shares sold off 7.36% today as the retailer received a downgrade from MKM Partners The company issued a sell rating and a price target of $26 a share which weighed on prices. Analyst Roxanne Meyer said she is "skeptical about Michael Kors' ability to meet Wall Street estimates for 2018 and 2019 following weak fourth-quarter results." Shares are now lower on the year by over 20%.