The iShares Russell 1000 ETF (IWB) faces macroeconomic and valuation headwinds, with recent performance lagging due to hyperscaler concentration and rising rates. IWB's heavy weighting in technology and communication services increases its sensitivity to interest rate changes and exposes it to sector-specific risks. Geopolitical tensions and oil shocks have re-anchored inflation expectations, while persistent core inflation limits the likelihood of near-term Fed rate cuts.
