| FlexShares Morningstar Global Upstream Natural Resources Index Fund | $7.5B |
| FlexShares STOXX Global Broad Infrastructure Index Fund | $3.1B |
| FlexShares iBoxx 3-Year Target Duration TIPS Index Fund | $2.6B |
| FlexShares Quality Dividend Index Fund | $2.1B |
| FlexShares Morningstar US Market Factor Tilt Index Fund | $2.0B |
| FlexShares Ultra-Short Income Fund | $1.4B |
| FlexShares High Yield Value - Scored Bond Index Fund | $1.1B |
| FlexShares International Quality Dividend Index Fund | $1.1B |
| FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | $1.0B |
| FlexShares US Quality Large Cap Index Fund | $900.6M |
| FlexShares Credit-Scored US Corporate Bond Index Fund | $697.9M |
| FlexShares Morningstar Developed Markets ex-US Factor Tilt Index Fund | $633.6M |
| FlexShares Quality Dividend Defensive Index Fund | $530.3M |
| FlexShares Global Quality Real Estate Index Fund | $383.0M |
| FlexShares Morningstar Emerging Markets Factor Tilt Index Fund | $347.0M |
| FlexShares US Quality Low Volatility Index Fund | $169.6M |
| FlexShares Core Select Bond Fund | $168.9M |
| FlexShares STOXX US ESG Select Index Fund | $128.3M |
| FlexShares ESG & Climate US Large Cap Core Index Fund | $110.7M |
| FlexShares STOXX Global ESG Select Index Fund | $108.5M |
| FlexShares International Quality Dividend Dynamic Index Fund | $101.5M |
| FlexShares Disciplined Duration MBS Index Fund | $94.0M |
| FlexShares ESG & Climate Developed Markets ex-US Core Index Fund | $78.7M |
| FlexShares Developed Markets ex-US Quality Low Volatility Index Fund | $53.2M |
| FlexShares ESG & Climate Investment Grade Corporate Core Index Fund | $42.9M |