The upcoming quarterly earnings of major US technology companies will be the next key test for the artificial intelligence (AI) investment cycle, even as investors debate whether the market is witnessing "AI fatigue" and shifting towards cheaper markets such as India and China, according to a Jefferies report.The report, titled "AI fatigue and rotation", said, "The new quarter has begun with much talk of 'AI fatigue' as investors look out for a peaking out of momentum and rotation into cheaper 'value' names which have not been part of the AI trade." It added that Tencent is one example of this…