Investing.com - U.S. stock index futures were flat to slightly lower Tuesday as risk-off prevailed globally.
The Dow futures off 0.15% at 06:45 ET. The DJI closed off 0.10% overnight.
The S&P 500 futures shed 0.18%. The tech-heavy Nasdaq 100 futures lost 0.09%.
Caution was the order of the day ahead of former FBI chief James Comey's testimony to the Senate on Thursday.
The dollar index was lower but off November lows.
The odds of a Fed June rate hike currently stand at 86.5%.
Oil remained under pressure as the Middle East diplomatic row weighed.
(NASDAQ:Apple) edged higher pre-market after unveiling HomePod speaker.