buy a book for him

"trade for a living", or your can search and download from the web.

It clearly states that greedy and phychological fear are the two worst enemy for any trader. From your word, your hu*****and has both. He is destined to LOSE.

He must understand that stock market is a negative sum game. Speculators lose almost surely. A gambler is always ruined, that's the effort of a very famous mathematician, who spent more than 20 years in the casinos untill he realize this and come back to academic and develop this exact theory.

Understanding is the first step, then you make a judgement on his judgement, set a limit and see how it goes..

Donot stay with a gambler. The problem has to be solved and there are only two ways: He correct his behavior or your leave him. No other single solution will work.

Sorry to be wordy and mechanisim.

Good luck