My worst calls (equity failures). Has anyone considered writing about their worst stock calls?
Mine was GTCB, which developed transgenic goats as means of drug production. The drugs could easily be extracted from the milk. It was a great system but I ignored other aspects, like how traditional cell culture production was improving, and that while GTCB was able to get a product approved, it wasn't going to be a money maker. I lost 90% of my investment and the worst part was after approval I could have gotten all my money back and a bit of profit but hung on instead of taking some money off the table. I learned a valuable lesson. Better to make less than you could have that to lose more than is comfortable.