STXM provides exposure to the US mid-cap space. Starting with a broad, total market universe of 1500 US stocks, the index selects securities ranked 501 to 900 by market capitalization. Eligible securities must be listed on a US exchange and have a free float of at least 10% of its total shares outstanding. The index includes common stock and real estate investment trusts. Selected securities are weighted by market capitalization. The fund intends to utilize a replication strategy, which means it will invest all of its assets in the securities comprising the index. However, the adviser may use a sampling strategy if it is determined to be in the best interest of shareholders. The index rebalances semi-annually in January and July.