I want to know if investing in crypto currencies is allowed in Islam. Please advice me on what the rulings of ayatollah Ali sistani and ayatollah sayed ali khamenie are regarding investing and dealing with crypto currency.

Many of our scholars have prohibited it, whilst some have said we should avoid trading in it. This is the best way

Here is an article with more details

http://ijtihadnet.com/bitcoin-perspective-shiite-clerics-fatwas/

I want to know if investing in crypto currencies is allowed in Islam. Please advice me on what the rulings of ayatollah Ali sistani and ayatollah sayed ali khamenie are regarding investing and dealing with crypto currency.

Aytullahi Sistani doesn’t allow it

Ayatuallahi Khamenei says one should not do based on precaution