Eric Trump-backed company's shares crash after controversial move [https://www.thestreet.com/.image/t_share/MjE4MDAyNTY3ODM2MjE1MTMy/gettyimages-2226872915.jpg] Eric Trump-backed company's shares crash after controversial move ALT5 Sigma's stock has fallen 40% since it decided to build a WLFI treasury. [https://www.thestreet.com/crypto/investing/trump-linked-wlfi-treasury-sees-stock-fall-over-9]