ROKT focuses on US-listed companies whose products and services are driving innovation behind the exploration of deep space and deep sea. The underlying index is a combination of two sub-indexes, one that follows space travel and exploration, and another that follows the remotely operated or unmanned aerial, underwater, and surface-level drones market. The methodology involves scanning company documents and SEC submissions for search terms to determine inclusion in the index. Selected stocks are deemed either core or non-core depending on whether one of ROKTs themes is a central focus of the company. Holdings are initially weighted equally, with an overweighting factor applied to core stocks. The index is rebalanced semi-annually. Prior to Oct. 31, 2025 the Issuer did not use the branding of State Street in the fund name.