US equity indices extended all-time highs on Thursday, December 26. <br /><br />The Dow Jones Industrial Average finished at a record high for the sixth straight session. The Dow closed at 16,479.88 – its highest-ever level.<br /><br />The S&P 500 also climbed to a new high for the fourth day in a row.<br /><br />Improving jobs data has been fuelling optimism in the world’s largest economy.