When a company is presented with fraud allegations, they are supposed to quickly swing back hard to protect investor confidence. Kyndryl should have almost immediately launched a defamation lawsuit against Gotham, yet... Silence. This suggests Kyndryl knows they can't disprove the fraud allegations and/or they are afraid of the discovery process they would instigate on themselves (although the multitude of other lawsuits and investigations opened since the Gotham report will likely uncover what they are attempting to hide).
So, why else would Kyndryl let Gotham tank their stock and shake investor confidence without a fight?