REX AI Chipmaking ETF AI INDUSTRY RISK [Member] ASIA RISK [Member] JAPAN RISK [Member] AUTHORIZED PARTICIPANTS, MARKET MAKERS, AND LIQUIDITY PROVIDERS LIMITATION RISK [Member] CHIPMAKING ENABLING COMPANIES RISK [Member] CONCENTRATION RISK [Member] SEMICONDUCTORS AND SEMICONDUCTOR EQUIPMENT INDUSTRY RISK [Member] COSTS OF BUYING AND SELLING FUND SHARES RISK [Member] CURRENCY RISK [Member] CYBER SECURITY RISK [Member] DEPOSITARY RECEIPTS RISK. [Member] EQUITY SECURITIES RISK [Member] EUROPE RISK [Member] FOREIGN SECURITIES RISK [Member] INDEX PROVIDER RISK [Member] LARGE CAPITALIZATION COMPANIES RISK [Member] LIQUIDITY RISK [Member] MARKET MAKER RISK [Member] MARKET RISK [Member] NEW FUND RISK [Member] NEW INDEX RISK [Member] NON-CORRELATION RISK [Member] OPERATIONAL RISK [Member] PASSIVE INVESTMENT RISK [Member] PREMIUM/DISCOUNT RISK [Member] TRADING ISSUES RISK [Member] VOLATILITY RISK [Member] REX AI Chipmaking ETF [Member] REX AI Chipmaking ETF. REX AI Chipmaking ETF. VOLATILITY RISK. TRADING ISSUES RISK. PREMIUM/DISCOUNT RISK. PASSIVE INVESTMENT RISK. OPERATIONAL RISK. NON-CORRELATION RISK. NEW INDEX RISK. NEW FUND RISK. MARKET RISK. LARGE CAPITALIZATION COMPANIES RISK. INDEX PROVIDER RISK. FOREIGN SECURITIES RISK. EUROPE RISK. EQUITY SECURITIES RISK. DEPOSITARY RECEIPTS RISK. CYBER SECURITY RISK. CURRENCY RISK. COSTS OF BUYING AND SELLING FUND SHARES RISK. SEMICONDUCTORS AND SEMICONDUCTOR EQUIPMENT INDUSTRY RISK. CONCENTRATION RISK. CHIPMAKING ENABLING COMPANIES RISK. AUTHORIZED PARTICIPANTS, MARKET MAKERS, AND LIQUIDITY PROVIDERS LIMITATION RISK. JAPAN RISK. ASIA RISK. AI INDUSTRY RISK. LIQUIDITY RISK. MARKET MAKER RISK.