Chubb Insurance is owned by its public shareholders. The parent company, Chubb Limited, trades on the New York Stock Exchange under the ticker CB, and its stock is held by thousands of institutional and individual investors around the world. The three largest owners are the asset managers Vanguard and BlackRock along with Warren Buffett’s Berkshire Hathaway, each holding somewhere between about 6 and 9 percent of outstanding shares. No single person, family, or company controls the business, and its market capitalization stood near $128 billion in mid-2026.
A Public Company Listed on the NYSE
Chubb Limited is the parent of the entire Chubb insurance group. It is legally incorporated in Zurich, Switzerland, as a stock corporation under Swiss law.1U.S. Securities and Exchange Commission. Exhibit 5.1 The Swiss domicile does not change where the shares trade: Chubb stock is listed in the United States on the NYSE and sits in the S&P 500 index.2Chubb. Chubb Insurance That index membership is a big part of why institutions dominate the shareholder list. Any fund that tracks the S&P 500 automatically buys Chubb, and the dollars behind those funds are enormous.
Because Chubb is public, it files regular financial disclosures with the U.S. Securities and Exchange Commission, and anyone with a brokerage account can buy or sell its stock. Every shareholder holds a fractional interest in the company’s assets and earnings in proportion to the number of shares they own.
The Three Largest Shareholders
Based on the most recent SEC filings, institutional investors hold the overwhelming majority of Chubb’s shares. The top three are:
- The Vanguard Group, with roughly 36.4 million shares, or about 9.3 percent of the company.
- Berkshire Hathaway, with roughly 34.3 million shares, or about 8.3 percent.
- BlackRock, with roughly 27.9 million shares, or about 6.7 percent.
Those three alone account for about a quarter of all outstanding Chubb stock. Dozens of other asset managers, pension funds, and sovereign wealth funds hold smaller stakes behind them. Reported institutional ownership actually totals more than 100 percent of the public float, which sounds impossible but is common for large-cap stocks: overlapping fund structures and share-lending arrangements get double-counted in the filings.3Nasdaq. Chubb Limited Common Stock (CB) Institutional Holdings
Retail investors own a comparatively small slice directly. Most people whose money is in Chubb hold it indirectly, through mutual funds, ETFs, or retirement accounts run by the same large institutions listed above.
Berkshire Hathaway’s Stake
Berkshire Hathaway’s position is worth singling out because of how recently it appeared. Berkshire built its Chubb stake under a confidential treatment request with the SEC, which allowed the holding to stay out of its public 13F filings while it was being accumulated. The position was finally disclosed in May 2024 at about 25.9 million shares, worth roughly $6.7 billion at the time. Berkshire kept buying through 2025 and into 2026, bringing the stake to approximately 34.3 million shares and making it one of Chubb’s two or three largest owners.
Who Runs the Company
Ownership and management are separate at Chubb, as they are at every public company. Shareholders elect a Board of Directors, and the board sets strategy and appoints executives. Evan G. Greenberg serves as both Chairman and Chief Executive Officer.4Chubb. Chubb Executive – Evan Greenberg The large institutional holders exercise their influence by voting on director elections, executive pay, and shareholder proposals at the annual general meeting rather than by running the business day to day.
How Today’s Chubb Was Formed
The Chubb that exists today is the product of a 2015 merger between ACE Limited and The Chubb Corporation. ACE was the legal acquirer in a deal initially valued at about $28.3 billion.5U.S. Securities and Exchange Commission. ACE to Acquire Chubb for $28.3 Billion in Cash and Stock When the deal closed on January 14, 2016, the aggregate value had risen to approximately $29.5 billion.6Chubb. ACE Completes Acquisition of Chubb; Adopts Chubb Name and Launches New Chubb Brand The combined company adopted the Chubb name for its stronger brand recognition but kept ACE’s Swiss legal domicile, which is why a company most Americans think of as a U.S. insurer is incorporated in Zurich.
That history matters for the ownership picture because shareholders of the old Chubb Corporation received a mix of cash and ACE stock in the transaction. The ACE shares they received are the same shares now trading as Chubb Limited, so many of those legacy holders remain part of today’s shareholder base alongside the institutional giants.