The euro held mostly flat against the dollar Tuesday in light holiday trading a day after grim announcements by Toyota Motor Corp. and Walgreen Co. helped it regain ground lost late last week, AP reported. The 15-nation euro bought $1.3961, up just marginally from $1.3958 late Monday in New York. Drug store operator Walgreen said Monday profit fell 10 percent in its fiscal first quarter, due mostly to the costs of opening more than 200 new stores. Toyota, meanwhile, said it will report its first operating loss in 70 years. The British pound dropped slightly to $1.4858 from $1.4865 late Monday while the dollar rose to 90.21 Japanese yen from 90.07 on Monday.