An economics researcher is warning that the next few decades could bring a massive stock market collapse

• The US stock market could face collapse by 2050, according to new research by a Finnish economist.
• That's because US stock growth is unsustainable, and a crash is bound to happen in the coming decades. 
• The findings of the study mirror recent commentary from Wall Street legends, who are warning of an epic wipeout.

The next few decades could bring on an epic stock market collapse, according to a Finnish economics professor and researcher from the University of Vaasa who's sounding the alarm over an "armageddon" financial crisis.