** Shares of medical device maker Cooper Companies COO.O fall 8.7% to a 15-month low of $83.3
** Stock is set to have its biggest one-day pct fall since 2020
** Co late on Thursday posted Q1 revenue of $964.7 million, missing analysts' average estimate of $978.09 million as per data compiled by LSEG
** Co reiterated its 2025 revenue forecast of between $4.08 billion and $4.16 billion
** Co reported Q1 profit of 92 cents/share, vs analysts' estimate of 91 cents
** Stock has fallen 10.7% in the past 12 months
(Reporting by Padmanabhan Ananthan)
((Padmanabhan.Ananthan@thomsonreuters.com;))