If you go back on Inergy Investor Relations or a news release, I believe there might be something in the way the SPH share distribution is treated for tax purposes. This is before the distribution took place in early August. Also, your broker may be able to help you because this happens a lot and they may be familiar with its tax treatment.
Sorry about the price you paid for NRGY. That's why I don't like the Stock Market. It's a guessing game, or as I like to describe it, a casino.