Mark Cuban Goes All In on Yen Trade

While some noted investors have been shorting the Japanese yen – or buying gold in yen terms – billionaire investor Mark Cuban said Thursday on CNBC that he jumped into the trade.

"Where I've made my biggest trades have been in currencies because there's a lot more transparency and a lot more information available than there are with stocks," he said. "So, it's just a more efficient market, in my mind."

On "Fast Money," Cuban said that he "rarely" invests in stocks anymore.

That's not to say he wasn't on the lookout for a winning trade.

(Read More: Get High-Frequency Trading Genie Back In the Bottle: Mark Cuban)

"In December, 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 it was in the mid-80s, and I've been really happy with it," he said.

The Japanese yen traded midday at a rate of 99.37 to $1 U.S.

(Read More: Mark Cuban Goes All In on Yen Trade)

Trader disclosure: On April 25, 2013, the following stocks and commodities mentioned or intended to be mentioned on CNBC's "Fast Money" were owned by the "Fast Money" traders: Joe Terranova is long VRTS; Joe Terranova is long SJM; Joe Terranova is long IBM; Joe Terranova is long SPLK; Joe Terranova is long SWN; Joe Terranova is long mini S&P June Futures; Joe Terranova is long Crude Oil; Joe Terranova is long June Futures; Stephen Weiss is long QCOM; Jon Najarian is long WDC CALLS; Jon Najarian is long AMZN CALLS; Jon Najarian is long AKAM CALLS; Jon Najarian is long ZNGA; Jon Najarian is long AMZN; Jon Najarian is long CTSH; Jon Najarian is long CTSH CALLS; Stephanie Link is long AAPL; Stephanie Link is long GS; Stephanie Link is long JPM; Stephanie Link is long CSCO; Stephanie Link is long FB; Stephanie Link is long VALE.