S&P 500 Index Futures Trading Lower In Volatile Session

S&P 500 index futures are trading lower by 12 points at 2012.75 in Friday's session. The index is attempting to find intra-day support in the area of Tuesday's low (2010), reaching 2010.50 and rebounding.

All but one of the top 10 components of the index are in the red. The lone winner was Amazon.com, Inc. AMZN, trading higher by $0.55 at $671.20.

The biggest loser is Berkshire Hathaway Class B (NYSE: BRK-B), trading lower by $2.26 at $131.71.