behind strong returns for shares of visa and merck the dow jones industrial average is climbing thursday morning the dow djia is trading 145 points or 04 higher as shares of visa v and merck mrk have contributed to the bluechip gauges intraday rally visas shares have climbed 732 or 34 while those of merck have risen 284 or 34 combining for an approximately 67point bump for the dow other components contributing significantly to the gain include salesforce inc crm  nike nke  and apple inc aapl  a 1 move in any of the dows 30 components results in a 659point swing editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use