Monday’s light volume selloff had helped remove the excessive optimism in the market and setting the stage for a recovery rally going into this Friday quadruple witching. So it seems to us that the bulls shouldn’t get into any serious troubles as long as we hold above the 920 level on the S&P 500 index. In a longer term however, the rally in the U.S. dollar could spell trouble for dollar-traded commodities, as well as the underlying commodity stocks. That, in turn, will cripple the quick economic recovery and thus drag down the entire stock market.