Stocks have needed a reason to take a breather and pull back in this long-standing ultra-bullish climate, with strong economic data and seasonality providing impressive tailwinds -- and plummeting oil prices certainly have given it to them. But this minor pullback was fully expected and indeed desirable for market health. The future remains bright for the U.S.

As everyone knows, stocks do not go up in a straight line, not even during the holidays. So although the future looks bright for U.S. equities as the major indexes continue to hit or challenge new highs, the market has been gasping for a breather to gather bullish conviction. My fear has been that we might not see it until January, which likely would have resulted in a more severe correction at that time. But falling oil prices and a weak Energy sector seems to have introduced a reason to sell this week.

With warmer weather arriving to melt the early snowfall across much of the country, investors seem to be catching a severe case of holiday fever and positioning themselves for the seasonally bullish time of the year. And to give an added boost, both Europe and Asia provided more fuel for the bull’s fire last week with stimulus announcements, particularly China’s interest rate cut. Yes, all systems are go for U.S. equities as there really is no other game in town.

Investors in U.S. equities seem to have embraced a new market paradigm in which upside spikes come more swiftly than the downside selloffs. Remember when it used to be the other way around? When fear was stronger than greed? The market is consolidating its gains off the early-October V-bottom reversal, and no one seems to be in any hurry to unload shares this time around, with the holidays rapidly approaching and all.

After displaying a classic V-bottom reversal to what turned out to be a quick and anemic attempt by the bears to bring about a real correction, bullish fervor is becoming contagious, especially as the traditionally strong holiday season approaches. Indeed, the brief selloff was snatched up as a buying opportunity as I predicted it would, but my concerns about the market consolidating and struggling to hit new highs before year end were quickly dismissed. So, with nothing but blue skies overhead, will the party simply roll on?

Although the stock market displayed weakness last week as I suggested it would, bulls aren’t going down easily. In fact, they’re going down swinging, absorbing most of the blows delivered by hesitant bears. Despite holding up admirably when weakness was both expected and warranted, and although I still see higher highs ahead, I am still not convinced that we have seen the ultimate lows for this pullback. A number of signs point to more weakness ahead.

Once again, stocks have shown some inkling of weakness. But every other time for almost three years running, the bears have failed to pile on and get a real correction in gear. Will this time be different?

U.S. stocks just continue to cruise right along, although investors seem to be displaying a healthy level of caution, looking over their shoulders as they whistle past the graveyard and bet on ongoing improvement in corporate earnings and economic growth. Despite extremely overbought technical conditions and regional hot spots that may ultimately threaten global economic recovery, investors seem undeterred.

After its long-awaiting breakout of the 1900 level the other week, the S&P 500 gained another +1.3% last week alone, but this double-low progression as I call it -- i.e., on extremely low volume and with persistently low volatility -- is worrisome.

Stocks ended last week on a high note, closing a smidge above strong resistance at 1900 for the S&P 500, which set a new closing high for the large-cap index, albeit on low pre-holiday volume. With the Memorial Day holiday giving us a short week of trading, all eyes are on voting in Ukraine, where a decisive win for billionaire business tycoon Petro Poroshenko seems assured.