By Ryan Vlastelica
NEW YORK (Reuters) - U.S. stock index futures pointed to very slight gains at the open on Tuesday, with investors finding few reasons to buy after a rally in the previous session that took the S&P 500 index above 2,000 for the first time.
The benchmark S&P failed to hold that level Monday, but ended at a new closing high. Equities have rallied lately, with the Dow and S&P advancing in seven of the last 10 sessions, and the Nasdaq climbing in eight.
That momentum is still considered intact, and the S&P's price-to-earnings ratio is within historical norms, leading many analysts to believe the market is not overvalued. Nonetheless, further gains may be a challenge without positive catalysts and amid potential headwinds such as a reduction in Federal Reserve stimulus and a simmering conflict between Ukraine and Russia.
Much of the market's recent gains have come on low volume, suggesting many traders may be reluctant to jump in at current levels.
Among Tuesday's biggest premarket movers, Best Buy Co Inc
S&P 500 e-mini futures
Biotechnology stocks were among the biggest drivers during Monday's rally. That appeared to continue Tuesday, with Kite Pharma Inc
Digital Ally Inc
Amazon.com Inc
Durable goods jumped 22.6 percent in July, the biggest gain on record, though the number was skewed by strong international demand for aircraft. Excluding transportation, orders fell 0.8 percent.
(Editing by Bernadette Baum)