This ETF offers -2x daily leverage to an index comprised of U.S. REITs, giving sophisticated investors a tool for expressing a bearish short-term view of the U.S. real estate sector. It should be noted that the daily reset feature makes SRS inappropriate for investors without the ability or willingness to monitor this position on a regular (daily) basis. Moreover, investors should note that the stated target multiple is applicable only for a single trading session; returns over multiple sessions depend on the path taken by the underlying index during that period. For sophisticated investors with a fair amount of tolerance for risk and volatility, this ETF can be a useful tool for hedging real estate exposure or simply for speculating on a decline in the value of this asset class over a short period of time. But SRS shouldn't ever be found in a long-term, buy-and-hold portfolio; it's simply too risky, and the nuances of this fund make significant losses possible when held for an extended period of time in volatile markets. Investors looking for 1x inverse real estate exposure may want to look at REK, while URE is an option for making a long leveraged bet on this asset class. Investors seeking 3x daily real estate exposure have both bull (DRN) and bear (DRV) options in ETF form.