Investing.com - U.S. stock index futures were flat Wednesday as caution prevailed ahead of risk events Thursday.
The Dow futures up 0.01% at 07:30 ET. The DJI closed off 0.23% overnight.
The S&P 500 futures up 0.02%. The tech-heavy Nasdaq 100 futures adds 0.10%.
Investors are looking to former FBI chief James Comey's testimony to the Senate on Thursday.
Comey was investing alleged Russian interference in the U.S. presidential when he was sacked by Trump.
There are concerns his revelations could derail Trump's economic agenda.
The U.K. general election and the ECB policy meeting also due Thursday raising unlikely specter of a triple whammy for the markets.
The dollar index was driven higher as the euro sank on a report ECB to cut inflation projections.
Oil was lower ahead of EIA inventories amid ongoing tensions in the Middle East.