Upstream Master Limited Partnerships sometimes get short shrift from Wall Street -- especially when it comes to indexing and benchmarks and performance measurements.A new upstream index dedicated to racking MLPs, and passing performance and financial issues along to investors, promises to change all that. The new index is called the Cushing Royalty Trust and Upstream Income Index (CRTY). According to financial statements provided to Oil and Gas Investor by Cushing, the index is a float-adjusted market capitalization weighted index of the top 25 upstream MLPs and U.S. royalty trusts with ...