The Bank of Japan is determined to spark inflation and weaken the yen to prop up the stagnant economy and help exporters. Many currency traders and hedge funds have made a killing by siding with the BOJ.

Billionaire investor and Dallas Mavericks owner Mark Cuban has also profited by betting against the yen.

Currency trading is notoriously dangerous but investors can use ETFs to position for more yen weakness.

Cuban stated that he is betting big against the yen, reports Joe Weisenthal for Business Insider.

“In early December, I went and took every penny of debt that I had – with the Mavericks, and personal debt, and everything – and converted it to a yen loan, when I think [the yen]was in the mid 80s [against the dollar],” Cuban said on CNBC. “So, I’ve been really happy with it.”

When borrowing against a given currency, an investor is essentially shorting the currency since one would pay less upon maturity once the weaker yen-denominated debt is converted to the U.S. dollar.

Next page: ETFs to short the yen