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Seth Klarman's Fund Purchases Significant Stake in CME Group

1 report, 1 independent Updated Sep 23
AI-generated briefing. Brind wrote this from the reports listed below. It can be wrong. Each section says how much you can rely on it, and the sources are linked so you can check.

What happened

Some supportReported by 1 outlet

Seth Klarman's fund, which runs Baupost Group, opened a new position in CME Group on September 23, 2026. The purchase involved 619,000 shares, valued at approximately $136.69 million, representing 2.52% of Baupost’s 13F portfolio. This was the largest of three new positions reported in the fund's second-quarter filings.

From insidermonkey.com

Why it matters

Some supportBrind's analysis of the reports

CME Group operates financial exchanges that provide marketplaces for futures and options contracts. The company reported that its revenue rose 1% year over year in the second quarter of 2026, while open interest increased 8% year over year to 127 million contracts. CME Group is the successor to the Chicago Mercantile Exchange and maintains the Chicago Board of Trade and New York Mercantile Exchange as subsidiaries.

From insidermonkey.com

Who's involved

  • Seth KlarmanAmerican investor whose fund executed the purchase of shares in CME Group.
  • CME GroupFinancial exchange operator that received the large investment purchase.

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The entities involved

Coverage

Newest first; wire copies grouped