Pfizer Inc. (PFE) said Thursday it completed its $68 billion acquisition of Wyeth (WYE) after having received final regulatory approvals on Wednesday.

Under the acquisition agreement, each outstanding share of Wyeth common stock has been converted into the right to receive $33 in cash without interest and 0.985 of a share of Pfizer common stock.

Wyeth shares will stop trading after the closing bell today. They were recently up 4 cents to $50.08. Pfizer shares were up 2 cents to $17.39

-By Wallace Witkowski, 415-439-6400; AskNewswires@dowjones.com