Arthur J. Gallagher & Co. (AJG:NYSE) closed at $268.04 on October 23, 2026, down 1.09% on the day. The stock trades 4.8% below its 52-week high of $281.66 and 40.5% above its 52-week low of $190.75. Over the past year, it lost 4.5%. Arthur J. Gallagher & Co. is part of the Finance sector (Specialty Insurers).
In 252 trading sessions since October 23, 2025, AJG closed higher on 122 days (48%). Its best day was October 15, 2026 (+5.51%) and its worst was February 9, 2026 (-9.85%). It never moved 10% or more in a single session.
Arthur J. Gallagher & Co., together with its subsidiaries, provides insurance brokerage and risk management services in the United States and internationally. Its Brokerage segment consists of retail and wholesale insurance brokerage operations. The company's retail brokerage operations negotiate and place property/casualty, employer-provided health and welfare insurance, and healthcare exchange and retirement solutions primarily for middle-market commercial, industrial, public entity, religious, and not-for-profit entities. This segment's wholesale brokerage operations assist brokers and agents in the placement of specialized and hard-to-place insurance programs. It also acts as a brokerage wholesaler, and managing general agent or managing general underwriter distributing specialized insurance coverages for insurance carriers; and performs activities, including marketing, underwriting, issuing policies, collecting premiums, appointing and supervising other agents, paying claims, and negotiating reinsurance. The company's Risk Management segment offers contract claim settlement and administration services for enterprises that choose to self-insure their property/casualty coverages...
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