You win some, you lose some. The big winners one day may be the market's biggest losers the next.

That's what's happening to Caterpillar (CAT -6.62%) right now. The stock has been pulling the Dow (^DJI -1.18%) for a couple of days, but the bulldozer ran out of gas today.

Recent good news about a healthy home construction market was overshadowed by a surprisingly high number of jobless claims, taking the wind out of Caterpillar's sails. The stock fell 1.7%, single-handedly removing 13 points from the Dow. Without this sudden plunge, the index would stand pat right now

Fellow industrial-tools maker United Technologies (RTX 0.53%) followed suit with a 1.5% price drop, or nine negative Dow points.

Oil producers largely balanced out these losses, despite reports of lower oil prices and bulging supplies worldwide. Chevron (CVX 0.48%) and Exxon Mobil (XOM -0.29%) combined to add 12 points to the Dow by midday. Some analysts believe the plunging oil price might be a special kind of flash crash and expect the commodity to make a full recovery.

Oil giants manage some of the richest and safest dividend policies in the world. Read up on Exxon's shareholder-friendly money management moves, along with nine other rock-solid dividend champions, in this free report. Hurry up and grab your copy right now, because the report won't be free forever.