Vcg | Visual China Group | Getty ImagesCoreWeave's stock and bonds were both hit on Wednesday as investor fear grew that some technology companies are borrowing too heavily for the artificial intelligence build-out.Shares of the so-called neocloud nosedived 16%, while yields on its debt jumped higher. The yield to maturity on its 9.625% bond due in 2032 is sitting at 14.8%, while that of its 9.75% bond due in 2031 is around 14.9%. Bond yields move inversely to prices. While investors were once e...