** Shares of retirement home operator Brookdale Senior
Living BKD.N rises 3.8% to $4.69 in premarket trading
** RBC upgrades stock to "outperform" from "sector perform";
raises PT to $9 from $7
** Co has an under-appreciated pathway to margin expansion
given strong RevPAR growth and moderating operating expense
growth - Brokerage
** RBC analysts also note that demand for senior housing
continues to grow, with the U.S adding 1 mln seniors a year till
2030
** Strong home values and rising annual rent will help
margins expand for BKD - RBC
** Stock is up 65.6% YTD
(Reporting by Pranav Kashyap in Bengaluru)