Vanguard S&P 500 Growth ETF (NYSEMKT:VOOG) offers efficient access to the largest U.S. growth engines, whereas iShares S&P Small-Cap 600 Growth ETF (NASDAQ:IJT) targets the aggressive expansion of smaller firms. The 0.11 percentage point difference in expense ratios may appeal to cost-conscious investors, as the Vanguard fund charges significantly less than the iShares fund. Vanguard S&P 500 Growth ETF has paid $0.37 per share over the trailing 12 months, which on its recent ~$80.29 share price works out to a 0.5% yield. The iShares S&P Small-Cap 600 Growth ETF offers exposure to small-cap growth, with its portfolio allocated across Industrials at 19%, Technology at 18%, and Healthcare at 7%. It was launched in 2000. iShares S&P Small-Cap 600 Growth ETF has paid $1.21 per share over the trailing 12 months, which on its recent ~$171.73 share price works out to a 0.7% yield.