Somehow I'd never thought of computer stockmarket games. Kinda interesting. Windows prog doesnt do me much good, but I did find the DOS version of Black Monday (which can run on Linux's dos emulator and I am sure most all Windows OS capable of dos) at:
Its for sure very early dos program although not earliest version. I think there must have been complaints of it going too fast on other than very earliest PCs because this version seemed to have lot built in delays. I was actually getting annoyed at how slow the stock ticker part of program ran. I finally saw an authors note that you can speed it up by adding "--" in front of player name when picking name at begining. Be aware it is limited to 10 rounds before program ends and gives you a comment on your stock picking abilities.