Macerich Co. shares /zigman2/quotes/203054096/composite MAC +3.43% slid 4% Wednesday, after SunTrust Robinson Humphrey lowered its price target on the real-estate investment trust's stock to $52 from $55 and cut 2019 estimates, citing a range of factors including the potential loss of rent from Sears /zigman2/quotes/202095319/delayed SHLDQ +0.41% . Analysts led by Ki Bin Kim refined their model after talking with the company and learning that interest costs will be higher in 2019 by about $20 million, the company expects lower capitalized interest in 2019 and expect higher-than-expected expensing of previously capitalized leasing costs. Six of the nine Sears locations owned through a joint venture with Seritage are currently in liquidation. And Westside Pavilion, owned in a joint venture with Hudson Pacific, will be shut down starting in 2019. Shares have fallen 28% in 2018, while the S&P 500 /zigman2/quotes/210599714/realtime SPX -0.36% has fallen 0.5%.