Well, it all depends. If there is a stock-for-stock swap that complies with the IRC, there will be a carryover tax basis and carryover holding period. Which means if you paid $1,000 for your shares one-year ago, your tax basis in JPM is $1,000 and it is considered held for more than one-year. You will have a taxable gain only if you sell the stock.
Most mergers that I've dealt with are tax-deferred.
Sorry, I don't have time to find the link to the code section. I'm busy at work.
TODAY IS THE DAY OF MY AMAZING GOOD FORTUNE!
Don't wait for the storm to pass, learn to dance in the rain!
I can get there from here!