Bulls showed renewed backbone last week and drew a line in the sand for the bears, buying with gusto into weakness as I suggested they would. After all, this was the buying opportunity they had been waiting for. As if on cue, the start of the World Series launched the rapid market reversal and recovery. However, there is little chance that the rally will go straight up. Volatility is back, and I would look for prices to consolidate at this level before making an attempt to go higher. I still question whether the S&P 500 will ultimately achieve a new high before year end. Read more about Sector Detector: Bullish conviction returns, but market likely to consolidate its V-bottom

Scott MartindaleLast week brought even more stock market weakness and volatility as the selloff became self-perpetuating, with nobody mid-day on Wednesday wanting to be the last guy left holding equities. Hedge funds and other weak holders exacerbated the situation. Read more about Sector Detector: Sharp selloff in stocks sets up long-awaiting buying opportunity

Volatility continues to increase in the stock market and many of the leaders are breaking down. In particular, semiconductors took a rather big hit when one of the bellwethers warned of weakening global demand. Nevertheless, despite the significant headwinds, I do not think this spells the end of the bull market. But the technical damage to the charts is severe, particularly to the small caps, which are in full-blown correction mode. The large caps must show leadership and rally immediately -- or it will put at risk the critical and widely-anticipated year-end rally. Read more about Sector Detector: Semiconductors get slammed as investors scramble to protect profits

Scott MartindaleThis seasonally weak time of the year has proven reliable once again. As I observed last week, the volatility index often hits a peak in October but has never hit a trough during this notorious month. Last week, I warned of more downside in stocks before any new highs are challenged. It was the type of week that tests investors’ bullish conviction, and it was way overdue. Read more about Sector Detector: Overdue market weakness finally hits, but sector rankings turn bullish