(CNBC): Several companies experienced significant changes midday, with Kyndryl Holdings plummeting 55% due to a review of cash management practices. Nexstar Media Group and Tegna surged after President Donald Trump supported their merger, while Oracle’s shares rose following an upgrade to buy.

In the midst of market fluctuations, Kyndryl Holdings faced a significant drop in stock value as a result of a review by its audit committee into cash management practices. Meanwhile, Nexstar Media Group and Tegna saw increases after President Donald Trump backed their merger. Oracle experienced a rise in shares after being upgraded to a buy rating.

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