Pfizer Inc. () bụ ụlọ ọrụ na-ahụ maka ọgwụ na-ahụ maka ọgwụ na United States nke isi ụlọ ọrụ ya dị na New York City, ya na isi ụlọ ọrụ nyocha ya dị na Groton, Connecticut. Ọ bụ otu n'ime ụlọ ọrụ ọgwụ kachasị ukwuu n'ụwa. Edepụtara ya na New York Stock Exchange, na ngwaahịa ya abụrụla akụkụ nke Dow Jones Industrial Average kemgbe 2004. Pfizer nọ n'ọkwa nke 57 na ndepụta 2018 Fortune 500 nke ụlọ ọrụ kachasị ukwuu nke United States site na ngụkọta ego ha nwetara.Na Disemba 19, 2018, Pfizer kwupụtara nkwonkwo njikọta nke ngalaba nlekọta ahụike ha na nnukwu ụlọ ọrụ ọgwụ UK bụ GlaxoSmithKline; ụlọ ọrụ Britain ga-ejigide òkè na-achịkwa (depụtara na 68%).
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