KEY POINTS
  • Citigroup hikes its 2018 S&P 500 target to 2,800, citing larger-than-expected Republican tax cuts.
  • The new target represents 4 percent upside from current levels, as Citi's Tobias Levkovich expects companies to spend cash on marketing and discounts.
  • "The key is earnings growth and the question is: how much of this earnings growth is baked in. I think a fair amount is," the strategist told CNBC.
A pedestrian passes in front of a statue of a bull in the Wall Street area in New York City.

Citigroup strategists now see the S&P 500 ending 2018 a modest 4 percent above current levels without much more help from tax cuts.

Tobias Levkovich, Citigroup's chief U.S. equity strategist, had previously based his forecast on a corporate tax rate cut to 25 percent, but he has updated it because the tax bill that is nearing completion slashes the corporate rate to 21 percent.