Apple's first foldable iPhone triggered a market cap surge measured in hundreds of billions, but whether that single-session verdict survives contact with real consumer demand is a question Wall Street has not finished answering.

Apple's new CEO John Ternus unveiled the biggest iPhone update in years

Apples first-ever foldable iPhone could significantly impact the companys growth and stock performance. Analysts expect the device, potentially priced at $2,000-$2,500, to…