For those exploring this method of betting, it's been quite a run, as 4 of the 6 future tickets still alive at the elite 8, with 1 guaranteed to be in the final 4. As usual, if you can sell the tickets on exchanges or otherwise, I recommend it. Another means to hedge is to put a small bet on the opposing team (e.g., Villanova or St. Peters) to lock in a profit on the futures ticket. Current price of futures tickets:

Duke 12 to 1 (now increased 3-fold in value to 4 to 1)
UCLA 30 to 1 (now out; more than doubled in value before last night's game)
Illinois 35 to 1 (gone)
Houston 40 to 1 (now increased more than 10-fold in value, to 3 to 1)
Arkansas 50 to 1 (now increased 5-fold in value, to 10 to 1)
UNC 100 to 1 (now increased more than 15-fold in value to 6 to 1)

Profit on these, if measured like stocks, is a 500% rate of return in just a month's time.