One of my favourites is Supermarket Income REIT (LSE:SUPR). Indeed, with a current (1 August) yield of 7.2%, Supermarket Income sits comfortably within the top 10% of FTSE 350 stocks. This means someone with a £100,000 SIPP could earn £7,200 in dividends from Supermarket Income over the next 12 months. Please sir, I want some moreIt means Supermarket Income (in common with others in the sector) is unable to build a large cash buffer. As a result, those shareholders unable (or unwilling) to participate will see their positions diluted.