The dollar gained nearly 1% against the euro on Monday and rose to its highest since early August after about two weeks of declines.
Details: The dollar index, which tracks the greenback's value against six major global currencies, also strengthened, touching its highest in six weeks.
Why it matters: The dollar was the ultimate safe haven during March's selloff that saw global funds pour into the greenback as risk assets like stocks and oil declined at a record pace.
It reversed and moved lower as markets improved in the following months — going into Monday the currency was down nearly 5% since the start of Q3, and in July it suffered its worst month since 2010.
The big picture: The unwind of that trade could signal a broader market shift toward risk aversion.
The dollar rose almost across the board Monday, gaining against safe havens like the Japanese yen and Swiss franc as well as touching weekslong highs against commodity-linked currencies like the Canadian and New Zealand dollars, and emerging market currencies like the Mexican peso and South African rand.