The Russell 1000 value index is down around 13% year-to-date, while the Russell 1000 growth index has fallen about 26%. This month, however, fears that the Fed's monetary policy tightening could bring on a US recession have shifted the momentum away from value stocks, which tend to be more sensitive to the economy. The Russell value index is up 0.7% in July, compared with a 3.4% gain for its growth-stock counterpart. "People pay a premium for growth stocks when growth is scarce," said Burns McKinney, portfolio manager at NFJ Investment Group. Data from UBS Global Wealth Management on Thursday showed value stocks tend to outperform growth stocks when inflation is running above 3% — around a third of the 9.1% annual growth US consumer prices registered in June.