5th cusp sublord (House of speculation) is Ketu, which is not showing gains. He will invest impulsively.
Your husband is running Saturn Dasa Venus bhukti from 21-05-2017 to 20-07-2020. Saturn and Venus are connected to 8th house (house of disappointments and money house of opponents). Hence he can not recover the amount in this period. He is advised not to invest anything.
Next is Sun bhukti from 20-07-2020 to 02-07-2021. He is advised not to be a middleman or surety to anybody.
If you are interested pray Lord Kartaveeryarjuna to recover the loss. It is your luck.