After opening near the flat line yesterday, stocks sold off in the morning, but afternoon buying interest enabled the main stock market indexes to reverse back up. By the closing bell, major divergence in the broad market caused the major indices to finish with substantially mixed results. The blue-chip Dow Jones Industrial Average ($DJIA) posted a 0.4% loss and the S&P 500 Index ($SPX) edged 0.1% lower. However, small and mid-cap issues showed impressive relative strength yesterday. The small-cap Russell 2000 ($RUT) and S&P MidCap 400 ($MID) rallied 1.2% and 1.1% respectively. The Nasdaq Composite ($COMPQ) registered a more modest gain of 0.3%. The bulls held the upper hand into the close, as stocks closed near their intraday highs.

Like the price action of the broad market, volume levels were mixed as well. Turnover in the NYSE was 6% lower than the previous day's level, but total volume in the Nasdaq jumped 10%. Although the S&P and Dow posted small losses, the lighter volume in the NYSE enabled the S&P 500 to avert a "distribution day." On the other hand, the higher volume gain of the Nasdaq enabled the index to score a second consecutive bullish "accumulation day" that was indicative of institutional buying. In both exchanges, advancing volume finished roughly on par with declining volume, which was a solid recovery from the negative market internals of the morning.

Although the closing prices of the main stock market indexes were rather mixed yesterday, make no mistake that it was indeed an overall bullish trading day. For starters, stocks managed to shake off significant morning selling and subsequently recover all the way back to test their intraday highs. Afternoon strength and resilience is a common trait of healthy markets. But even more important was the clear relative strength of small-cap stocks.

Long-time subscribers of The Wagner Daily trading newsletter know that the performance of small and mid-cap stocks plays a significant role in our swing trading strategy for both individual stocks and ETFs. Most of the stocks we buy (only in uptrending markets) are small and mid-cap growth stocks because they have the greatest potential to exhibit sharp upward price momentum in uptrending markets. But even most industry sector ETFs tend to perform better and trend smoother when small and mid-cap stocks are leading the broad market.

The institutional money flow into small-cap stocks yesterday caused iShares Russell 2000 Index ($IWM) to break out above a key level of horizontal price resistance yesterday. Confirming the move was a surge in volume, which shot well above its 50-day average level. The IWM breakout is shown on the daily chart pattern below:



Given the high volume breakout in IWM yesterday, we are now stalking ProShares Ultra Russell 2000 ($UWM) for potential swing trade buy entry going into today's session. For those not familiar with ProShares ETFs, UWM is simply the 2X leveraged version of IWM. Over longer-term holding periods, most leveraged ETFs usually underperform their non-leveraged siblings. However, the long-term underperformance that arises from daily rebalancing of the portfolios of leveraged ETFs is not much of an issue with the shorter-term, momentum-based trades that we focus on.

If it triggers our preset entry price, buying UWM in our model ETF trading portfolio, rather than IWM, ties up less capital. Still, we will use IWM as the proxy for getting our buy and sell signals for this trade set up, then use corresponding entry and exit prices for trading UWM instead. Subscribers should note our detailed entry, stop, and target prices for this new ETF trade setup in the "ETF Watchlist" section of today's newsletter.

All three of our current open ETF positions advanced yesterday. The biggest gainer was iShares Nasdaq Biotechnology ETF ($IBB), which broke out above its recent consolidation and cruised 1.5% higher. The ETF is now testing resistance of its all-time high, which was set on July 27, 2012. Given the increasing volume of this ETF, combined with ongoing relative strength in the healthcare sector, we expect IBB to soon break out to a new record high. Although we have already been holding our initial entry in this ETF for the past three weeks, our patience is starting to pay off. Take a look:



The iPath Grains Trust ($JJG), a commodity ETF we have been long since August 29, rose 0.5% yesterday and continues to exhibit a nice daily chart pattern. On the chart below, notice the bullish "pennant" formation JJG has been forming, while the 20-day exponential moving average (beige line) has been perfectly acting as support. This should eventually lead to a breakout to new highs in the coming days:



DB Gold Double Long ($DGP), a gold ETF we bought when it broke out on August 31, digested the previous days sharp gains, while still managing to rise 0.3%. We expect bullish momentum to carry gold ETFs substantially higher, both in the short term and intermediate-term, but we plan to sell DGP into strength before the first correction occurs, then look to re-enter after it forms a bull flag or a base of price consolidation.

Deron Wagner is the Founder and Head Trader of both Morpheus Capital LP, a U.S. hedge fund, and MorpheusTrading.com, a trader education firm.