ARK Active Autocallable Income ETF ARK Active Autocallable Income ETF Authorized Participants Concentration Risk [Member] Communications Sector Risk [Member] Consumer Discretionary Risk [Member] Currency Risk [Member] Cyber Security Risk [Member] Depositary Receipts Risk [Member] Derivatives Risk [Member] Disruptive Innovation Risk [Member] Emerging Market Securities Risk [Member] Equity Securities Risk [Member] Financial Technology Risk [Member] Foreign Securities Risk [Member] Future Expected Genomic Business Risk [Member] Health Care Sector Risk [Member] Information Technology Sector Risk [Member] International Closed-Market Trading Risk [Member] Issuer Risk [Member] Large-Capitalization Companies Risk [Member] Leverage Risk [Member] Liquidity Risk [Member] Liquidity Risk — Synthetic ELNs [Member] Management Risk [Member] Margin Requirements Risk [Member] Market Risk [Member] Market Trading Risk [Member] Micro-Capitalization Companies Risk [Member] Money Market Instruments Risk [Member] New Fund Risk [Member] Next Generation Internet Companies Risk [Member] Non-Diversified Risk [Member] Operational Risk [Member] Quantitative System Risk [Member] Sector Risk [Member] Shareholder Risk [Member] Small- and Medium-Capitalization Companies Risk [Member] Synthetic ELN Strategy Risk [Member] Swap Risk [Member] Trading Issues [Member] Tax Risk [Member] Authorized Participants Concentration Risk Member Money Market Instruments Risk Member Emerging Market Securities Risk Member Shareholder Risk Member Health Care Sector Risk Member Management Risk Member Future Expected Genomic Business Risk Member Tax Risk Member Operational Risk Member Communications Sector Risk Member Sector Risk Member New Fund Risk Member Swap Risk Member Market Trading Risk Member Quantitative System Risk Member Large Capitalization Companies Risk Member Information Technology Sector Risk Member Liquidity Risk Member Micro Capitalization Companies Risk Member Trading Issues Member Foreign Securities Risk Member Small And Medium Capitalization Companies Risk Member Market Risk Member International Closed Market Trading Risk Member Leverage Risk Member S000100412 Member Liquidity Risk Synthetic ELNs Member Next Generation Internet Companies Risk Member Synthetic ELNStrategy Risk Member C000270236 Member Consumer Discretionary Risk Member Currency Risk Member Non Diversified Risk Member Derivatives Risk Member Equity Securities Risk Member Financial Technology Risk Member Cyber Security Risk Member Disruptive Innovation Risk Member Depositary Receipts Risk Member Issuer Risk Member Margin Requirements Risk Member