S&P 500 index futures slightly trimmed gains on Wednesday following results from JPMorgan Chase.

JPMorgan Chase shares were down 0.2 percent at $46.55 in premarket trade.

S&P 500 futures rose 7.4 points and were above fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures gained 57 points and Nasdaq 100 futures rose 15 points.

(Reporting by Angela Moon, Editing by Kenneth Barry)

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