BlackRock's iShares ETF LTM growth: Q2 16: 11% Q3 16: 15% Q4 16: 13% Q1 17: 16% Q2 17: 21% Q3 17: 19% Q4 17: 19% Q1 18: 15% Q2 18: 10% Q3 18: 9% Q4 18: 10% Q1 19: 9% Q2 19: 10% Q3 19: 10% Q4 19: 11% Q1 20: 9% Q2 20: 9% Q2 20 AUM: $2.2 trillion
Good question - these figures measure rolling LTM net flows over beginning of period assets. The denominator can be influenced by market appreciation, but I don't think the numerator can.