Among the largest underlying components of IWR, in trading today HJ Heinz Company ( HNZ) is down about 0.6%, and Spectra Energy Corporation ( SE) is lower by about 0.9%.

FORBES: Mid-Cap Stocks Continue To Lose Ground -- HNZ, SE In Focus

Among the largest underlying components of IWR, in trading today HJ Heinz Company ( NYSE: HNZ) is down about 1.5%, Spectra Energy Corporation ( NYSE: SE) is off about 0.2%, and Lorillard Incorporated ( NYSE: LO) is lower by about 0.8%.

FORBES: Midcaps Continue To Lag -- LO, SO, HNZ In Focus

Among the largest underlying components of IWR, in trading today Annaly Capital Management Incorporated ( NYSE: NLY) is up about 0.2%, Consolidated Edison Incorporated ( NYSE: ED) is off about 0.6%, and HJ Heinz Company ( NYSE: HNZ) is lower by about 1%.

FORBES: Midcaps Continue To Slide