Citadel's flagship fund rose 14% over the course of a challenging first half of the year. What drove its gains?
The combination of its employees' experience and trading algorithms enabled Citadel to weather the sector-wide sell-off in late June
Forbes claims that Citadel founder Ken Griffin has few equals on Wall Street when it comes to seeing the big picture of the market / Photo: Facebook / Citadelcareers
Citadel’s hedge funds, managed by billionaire trader Ken Griffin, ended the first half of 2026 with strong returns across key strategies. The quantitative investing guru managed to turn a profit where many others lost money.
Details
The best performance came from a tactical trading fund, which combines discretionary equity investments with quantitative (quant, algorithmic) strategies. According to a CNBC source, this Citadel fund gained 14.3% in the first half of the year, including 3.1% in June.
It avoided the sell-off that hit quantitative funds last week—funds whose strategies are based on statistical analysis, mathematical models, and algorithms—CNBC notes. According to Goldman Sachs, algorithmic strategies—which involve simultaneously betting on the rise of some securities and the fall of others (long-short)—experienced their worst five-day period since December 2023 at the end of June.
Other Citadel divisions also posted gains. The equity fund rose 11.2% in the first half of 2026 and 3.5% in June. The flagship Wellington multi-strategy fund gained 5.7% from the start of the year through the end of June. At the same time, the fixed-income fund’s return for the same period was nearly zero, a source told the TV channel.
Citadel declined to comment on CNBC's request for a statement regarding its financial results.
How Does Citadel Make Money?
According to WhaleWisdom data, 90 of the top 100 positions in Citadel’s portfolio are derivatives: call and put options on liquid indices, exchange-traded funds (ETFs), Big Tech, semiconductors, and gold. The remaining ten positions—or less than 3% of the portfolio— consist of stakes in tech giants such as Nvidia, Amazon, Micron, TSMC, Apple, Meta Platforms, Broadcom, and Microsoft—as well as blue-chip index ETFs: iShares Core S&P 500 and SPDR Dow Jones Industrial Average. Citadel also holds all of these in the form of options.
Context
The first half of the year was marked by high volatility in the financial markets. By the end of June, the S&P 500 had risen 9.6% and returned to new record highs after five weeks of declines in February and March. During this period, investors faced oil price spikes amid the conflict with Iran, doubts about the justification for the massive spending by major U.S. companies on artificial intelligence, and shifting expectations regarding the Fed’s policy, according to CNBC.
Citadel is known for its ability to bounce back quickly from crises, including the 2008 crisis. In 2022, the company generated $16 billion in returns for investors—a record for the hedge fund industry. Citadel founder Ken Griffin has become a figure in popular culture: in 2023, he was one of the protagonists in the biographical drama *Dumb Money*, which chronicled the GameStop short squeeze. However, the billionaire himself criticized the film, accusing its creators of distorting the facts.
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This article was AI-translated and verified by a human editor
