As Ken Griffin’s main hedge fund beat the market in September, he had an opportunity to make a fortune as a billionaire investor.

Citadel’s multistrategy flagship Fund Wellington saw 7.8% growth in September according to an individual familiar with the results. Its year-to-date performance is now 18.5%.

All five of the investment strategies of the fund — equities, commodities, global fixed income and macro, credit, and quantitative strategies — all registered gains last month, the person said.

In September, the stock market experienced a roller coaster ride as investors were worried about inflation and slowing growth. This is the S&P 500The stock market plunged 4.8% in March, its lowest month since March 2020. This also ended a seven-month streak of winning. Blue-chip DowAnd the Nasdaq CompositeThe worst month of the year saw a drop in sales and profits by 4.3% and 5.3% respectively.

As volatility returns, investors are turning to other assets and the hedge fund industry is attracting more capital. According to data from Evestment, Hedge funds received $12 billion more in August. This brought the total assets under management up to $3.622 trillion.

Citadel’s multi-strategy funds Tactical Trading and Strategic Trading both gained 3.9% each in September, which is an increase of 14.1% for the year.

According to HFR the hedge fund sector gained 10% from August 2021 until August 20, according to data. Business Insider first reported Citadel’s return.