BMY management, if I am not mistaken, has tended to announce splits when the stock price gets into the low 100s. We're there now. Is that what others recall. The last split occurred at about 120, but they announced it earlier when it was in the 100s, I think.
Last split announcement date was December 3, 1996; stock price was about $110-115 then. If the prescription trend (see below) for Avapro continues, a split announcement will be sooner than you might have expected.