Billionaire investor George Soros has upped what so far has been a losing bet on the U.S. stock market, according to recent filings.

The hedge fund manager and active supporter of progressive causes added bearish options plays to his portfolio during the first quarter.

His two primary plays — against large caps via the S&P 500 and small caps via the Russell 2000 — have a notional , or potential, value of $764.3 million, according to an analysis from S&P Global Market Intelligence. The plays are through his family office, Soros Fund Management.

They continue a trend he began in 2016 of betting against the market, moves that haven't worked out well considering the latest leg in the bull market. The is up 5.7 percent this year while the Russell 2000 is up fractionally at 0.3 percent.