Stocks, bonds, commodities, the dollar - they all slumped today to one degree or another. That rarely happens, since the various markets typically function at cross-purposes, but it could be a reflection of big-picture concerns that traders are starting to feel. In other words, they're getting antsy. (Of course, it also could just be an opportunity for profit-taking.) Of particular note, the Fed's bond-buying initiative seems to be getting less and less popular, which doesn't necessarily mean it won't work but does serve to create more uncertainty about the economy, which Wall Street absolutely cannot stand. No wonder the Chicago options volatility index jumped today. As for the Dow, it closed 90 points, to 11,192.