Wall Street extends rally but Germany truck deaths reduce gains

Wall Street extended a recent rally on Monday but finished the session short of earlier highs after several people were killed by a truck driven into a Christmas market in Germany. All three major U.S. indexes ended higher but lost some steam after German police said a truck ran into a crowded Christmas market in Berlin, killing nine people and injuring up to 50 others. "That's the playbook by which markets have come to address these types of issues." The S&P technology index rose 0.61 perce