Strategy. In seeking to track the performance of the S&P 1500 Positive Momentum Tilt Index ? (the Index), the Fund employs a sampling strategy, which means that the Fund is not required to purchase all of the securities represented in the Index. Instead, the Fund may purchase a subset of the securities in the Index in an effort to hold a portfolio of securities with generally the same risk and return characteristics of the Index. The quantity of holdings in the Fund will be based on a number of factors, including asset size of the Fund. Based on its analysis of these factors, SSGA Funds Management, Inc. (SSGA FM or the Adviser), the investment adviser to the Fund, either may invest … Show more… In seeking to track the performance of the S&P 1500 Positive Momentum Tilt Index ? (the Index), the Fund employs a sampling strategy, which means that the Fund is not required to purchase all of the securities represented in the Index. Instead, the Fund may purchase a subset of the securities in the Index in an effort to hold a portfolio of securities with generally the same risk and return characteristics of the Index. The quantity of holdings in the Fund will be based on a number of factors, including asset size of the Fund. Based on its analysis of these factors, SSGA Funds Management, Inc. (SSGA FM or the Adviser), the investment adviser to the Fund, either may invest the Fund's assets in a subset of securities in the Index or may invest the Fund's assets in substantially all of the securities represented in the Index in approximately the same proportions as the Index, as determined by the Adviser to be in the best interest of the Fund in pursuing its objective. Under normal market conditions, the Fund generally invests substantially all, but at least 80%, of its total assets in the securities comprising the Index. In addition, in seeking to track the Index, the Fund may invest in equity securities that are not included in the Index. The Fund may also invest in cash and cash equivalents or money market instruments (including money market funds advised by the Adviser) for cash management purposes. In seeking to track the Index, the Fund's assets may be concentrated in an industry or group of industries, but only to the extent that the Index concentrates in a particular industry or group of industries. Futures contracts (a type of derivative instrument) may be used by the Fund in seeking performance that corresponds to the Index and in managing cash flows. The Index applies an alternative weighting methodology to the S&P Composite 1500 Index so that stocks with relatively strong momentum are overweight relative to the S&P Composite 1500 Index and stocks with relatively weak momentum are underweight. The S&P Composite 1500 Index, one of the leading indices of the U.S. equity market, is a capitalization-weighted combination of the large-cap S&P 500 Index, the S&P MidCap 400 Index, and the S&P SmallCap 600 Index. A momentum style of investing emphasizes investing in securities that have had higher recent price performance compared to other securities. In constructing the Index, the Index Provider (as defined below) estimates the momentum of each stock in the S&P Composite 1500 Index based on its 11-month total return ending on the rebalancing reference date and ranks all 1,500 Index constituents in order of momentum. S&P then forms 20 sub-portfolios of approximately equal market capitalization, grouped by momentum. S&P determines each sub-portfolio allocation so that a sub-portfolio with relatively high momentum will have a higher allocation than a sub-portfolio with relatively low momentum. The weight of each stock in the Index is proportional to its market capitalization and to its sub-portfolio allocation. The Index is rebalanced quarterly, effective after the close on the third Friday of January, April, July, and October. As of August 31, 2025, a significant portion of the Fund comprised companies in the technology and financial sectors, although this may change from time to time. As of July 31, 2025, there were approximately 1,501 securities in the Index. The Index is sponsored by S&P Dow Jones Indices LLC ? (the Index Provider), which is not affiliated with the Fund or the Adviser. The Index Provider determines the composition of the Index, relative weightings of the securities in the Index and publishes information regarding the market value of the Index. Show less