pennbattle3hs6000| CVS's poor performance, shares plunged 18% and may hit its biggest one-day drop in 15 years

On the evening of the 1st, Beijing timepennbattle3hs6000, U.S. drug retail giant CVS Health fell more than 18% early Wednesday. Affected by its disappointing quarterly results, the stock could record its largest one-day decline in nearly 15 years.

Due to rising medical costs, the pharmacy giant not only reported lower-than-expected quarterly results, but also downgraded.pennbattle3hs6000Provide full-year performance guidance.

If the stock's closing decline remains at its current level, CVS will post its worst one-day performance since November 5, 2009, when its share price fell more than 20%. It will also mark the company's third-worst trading day on record.