As is frequently done with headlines and business/financial news snippets, a one-liner reason is given, possibly completely irrelevant to the level of change.

As is frequently done with headlines and business/financial news snippets, a one-liner reason is given, possibly completely irrelevant to the level of change. 'Kcots Stock closed 10% lower today on increasing speculation that Kcots Stock may have been intentionally named like a pallendrome.' I didn't read the article as I got paywalled. However I noticed that 'Target CEO Resigns Over Data Breach' was the headline introduced by the OP, and not the one in the WSJ.