Michael Burry, the investor who famously predicted the 2008 housing market collapse, sparked fresh debate about market valuations on Monday after posting a cryptic message on X as investor enthusiasm continues to build across artificial intelligence, technology stocks and SpaceX's (NASDAQ:SPCX) historic public market debut.

"It has been ridiculous for a very very long time," Burry wrote Monday, but stopped short of elaborating on the statement.

A Familiar Warning From Burry Earlier this year, the famed "Big Short" investor cautioned that the semiconductor sector was beginning to resemble the dot-com era, comparing the chip rally with the peak of the late-1990s technology bubble.

Burry has previously warned on everything from the housing bubble and meme-stock frenzy to passive investing and elevated equity valuations.

It has been ridiculous for a very very long time.— Cassandra Unchained (@michaeljburry) June 15, 2026 Read Also: Trump's $13 Million Lincoln Memorial Reflecting Pool Renovation Faces Scrutiny As Algae Returns Days After Completion: 'Being Vacuumed Up…' Markets Are Riding A Wave Of Optimism Burry's post comes as investor enthusiasm has surged across financial markets, fueled by AI boom, soaring technology stocks and SpaceX's record-breaking IPO.