Shares of The Trade Desk ( TTD -6.14%) are helping investors profit from the strong growth in the digital advertising market. The stock is up 80% year to date, outperforming the S&P 500 's 25% return ...

In other words, an American business or person exchanging dollars for rand ... That, in turn, increases the currency's value.

The Commerce Department releases its latest monthly tally of the nation’s trade gap Tuesday.