Ishares Trust Barclays 20plus Treasury Bond ETF (TLT)

[Stock]

TLT -- I heard a lot of stuff on the financial news radio station today about how stupid it is right now to go into bonds... 5%++ long rates driving up the cost of all these leveraged buyouts...and money supply growth being an equity investment catalyst... They specific focus was on TLT and the idea that -- ignoring dividends -- it's easy to get 15% upside down in a TLT position in a hurry... so what's 15% from the TOP for the year on TLT?? Anybody want to do the math??