Weekly Market Summary: Sustained Upward Momentum Remains Elusive

 | May 17, 2015 02:06AM ET

Summary: US indices are in an uptrend. But what they have lacked is the ability to sustain upward momentum for more than a week or two. With the SPDR S&P 500 (ARCA:SPY) at a new ATH, another test of strength has again arrived. There's room for price to move higher, but we suspect that any gains are likely to be short lived

SPY made a new closing high this week; the other indices did not. For the week, SPY gained 0.4% while NDX and RUT both gained 0.8%.

Overseas markets, which had been leading the US until mid-April, are now well off their highs. European indices closed 1% lower this week. Emerging markets gained 0.6%.

Crude oil has been up 8 of the last 9 weeks, but the gains the past two weeks have been minor. The trend higher has taken a pause.

Looking ahead, the main question once again is whether the breakout to new highs in SPY will hold. Over the past several months, they have not.

In short, we are back at the point where momentum has failed to carry the indices higher. Since the week of February 17, three months ago, NDX has not been able to gain even two weeks in a row. SPY has not been able to gain more than two weeks in a row. Both have a chance to change that pattern in the coming week.

The absence of follow-through is most clearly seen on the weekly SPY chart. The trend is clearly higher but momentum has not been strong; in fact, RSI has only been higher once since the week of December 1 (top panel). In other words, momentum has now reached the level at which the SPY has been close to turning lower over the past 5-1/2 months.