** Shares of hospital operator Community Health Systems CYH.N plunge 25.5% to $2.89 premarket
** Co says its CEO Tim Hingtgen will retire late September, current CFO Kevin Hammons will serve as interim CEO
** Sees full-year adj. EBITDA in the range of $1.45 bln -$1.55 bln, trimming upper end of previous forecast of between $1.45 bln and 1.60 bln
** Brokerage Jefferies downgrades co to "hold" from "buy", reduces PT on stock to $3 from $4.25
** Says impact on co's FY26 EBITDA from expiration of some subsidies and cuts in Medicaid rates from U.S. President Donald Trump's tax and spending bill to reduce earnings
** Hingtgen's departure at time when industry is faced with Medicaid cuts adds uncertainty that could prompt stock valuation discount - Jefferies
** Average rating of 10 analysts is a "hold", median PT at $3.75 - LSEG
** Stock up nearly 30% YTD, till last close
(Reporting by Purvi Agarwal in Bengaluru)
((Purvi.Agarwal@thomsonreuters.com;))