The iShares Russell 2000 ETF, which tracks small-cap U.S. stocks, was trading lower in pre-market activity. This decline occurred alongside broader market weakness, as indicated by a drop in the S&P 500 ETF. The overall negative sentiment was attributed to the release of new inflation data, which created headwinds for equity futures and exchange-traded funds. The news suggests the ETF is facing pressure from macroeconomic concerns impacting the wider market.