Quote from scriabinop23:
It is a binary event. You can do the math on any of your options (ie just going long Wyeth outright, or selling strangles), but in all seriousness you are just as likely to make the same profit on capital by speculating in the direction of something.
I bet if you buy some Feb ABX calls tommorow morning you'll likely make an easy 12% on your capital within 2 days time.
Last I checked there was nothing to arbitrage. It is a cash deal.
Although I view Rohm and Haas and Dow a different story (considering that deal happened during the biggest market/commodities crash since 1929), there is a high enough probability someone will have second thoughts on this pharm deal in this environment, enough to make you worry that the 15% winning (til the end of the year) may not be worth tying your capital up.