Wall Street analyst research calls

What happened: On Tuesday, Wall Street analysts issued several notable research calls. Lyft (LYFT) was upgraded to 'Buy' by Rothschild & Co Redburn, with a price target of $22. Meanwhile, Leidos (LDOS) was downgraded to 'Sell' by Citigroup. In the housing sector, Toll Brothers (TOL) was upgraded to 'Outperform' by Keefe Bruyette, while Lennar (LEN) was downgraded to 'Underperform' by the same firm. Canaccord nearly tripled FuelCell Energy's (FCEL) price target to $30 on a 'Buy' upgrade.

Market impact: These analyst calls are likely to influence investor sentiment and trading activities in the respective companies. The upgrade of Lyft, a ride-sharing company, may attract more buyers, driving its stock price up. Conversely, the downgrade of Leidos, a government services contractor, could lead to selling pressure, pushing its stock down. In the housing sector, the upgrade of Toll Brothers and downgrade of Lennar suggest a shift in analyst sentiment, potentially driving a reallocation of capital between these homebuilders.

What to watch next: Investors should closely monitor the upcoming earnings reports for Lyft (expected on May 4) and Leidos (expected on May 3), as well as the earnings for Toll Brothers and Lennar (both expected on May 23). These earnings reports will provide more color on the companies' fundamentals and help validate or refute the analysts' research calls. Additionally, the broader market's reaction to rising 10-year Treasury yields will continue to be a key factor affecting all stocks, including those mentioned above.