Trader Brian Jones on Twitter: "It's hard to say what number constitutes a breakdown from the trading range. In general it was 4075 but let's say 4065? Below 4050 would definitely be a break down. That i think would take the s&p below 4000 next. https://t.co/LbTQ9vZPGN" / Twitter

It's hard to say what number constitutes a breakdown from the trading range. In general it was 4075 but let's say 4065? Below 4050 would definitely be a break down. That i think would take the s&p below 4000 next.