I had 25k die on the vine. Paid about $550 for them, but thats ok.
I started buying SD warrants a couple of years ago. Got quite a few in the subs and kept buying as things kept looking more and more bullish for oil & NG.
Got waaaaaaay overloaded with several thousand dollars on the line. Thankfully I came to my senses in May of this year and started letting some go here and there.
Ended up making a nice profit but still disappointed it didn't turn out a whole lot better.