Editor's Note: TheStreet ratings do not represent the views of TheStreet's staff or its contributors. Ratings are established by computer based on metrics for performance (which includes growth, stock performance, efficiency and valuation) and risk (volatility and solvency). Companies with poor cash flow or high debt levels tend to earn lower ratings in our model. NEW YORK ( TheStreet) -- Senior Housing Properties (NYSE: SNH) hit a new 52-week high Thursday as it is currently trading at $27.12, above its previous 52-week high of $27.09 with 1.1 million shares traded as of 4 p.m. ET. Average volume has been two million shares over the past 30 days. Senior Housing has a market cap of $5.03 billion and is part of the financial sector and real estate industry. Shares are up 12.8% year to date as of the close of trading on Wednesday. Senior Housing Properties Trust, a real estate investment trust (REIT), primarily invests in senior housing properties in the United States. The trust invests in hospitals, nursing homes, senior apartments, independent living properties, and assisted living properties. The company has a P/E ratio of 33.5, above the S&P 500 P/E ratio of 17.7.