As you can now see it was profit taking (from the "huge" run up this past year) hedging bets that the results would be less than expected. Of course that was a dumb assumption considering the businesses that CBI is in and their continuing success as todays uptick proves. This stock is easily worth a lot more pps from where it is now.
OK, all the pretenders are out, and the contrast is striking. URS, FLR, FLWT, and even JEC losing steam while CBI and Technip are hitting it out of the park. These stocks should no longer be trading in lockstep.