Warren Buffett first began purchasing shares of PetroChina (PTR) sometime in 2002 (because it was on a foreign exchange, we don't know the exact date), and filed his first 13G on April 30, 2003.
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PetroChina: A Look Back
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Warren Buffett first began purchasing shares of PetroChina (PTR) sometime in 2002 (because it was on a foreign exchange, we don't know the exact date), and filed his first 13G on April 30, 2003.