Most of these ETFs take an index-based approach using Treasury Inflation-Protected Securities (TIPS). TIPS ETF (SCHP) with the remainder actively managed. According to CFRA, a more active approach to managing inflation proved fruitful for IVOL, as the ETF rose 16% in the one-year ended January 2021, significantly outperforming the 9.7% gain for SPDR Portfolio TIPS ETF (SPIP) as well as the 9.3% gain for SCHP and iShares TIPS Bond ETF (TIP).