NASDAQ OMX registered shares (ABB) NYSE American depository shares (ABB) Stock exchange listing dates: SIX Swiss Exchange, Zurich - June 28, 1999 NASDAQ OMX, Stockholm - June 22, 1999 NYSE, New York - April 6, 2001: Indices (weighting) (as of December 31, 2020) SMI - Swiss Market Index (4,243%) SPI - Swiss Performance Index (2,962%)

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