IUSG gives you the growth half of the S&P 500 universe — companies with strong sales growth, earnings momentum, and price appreciation. It's the classic growth tilt without the tech concentration of sector funds or the volatility of small-cap growth.
How It Works
The fund tracks the S&P 900 Growth Index, which ranks stocks in the S&P 500, 400, and 600 by three growth factors: sales growth, earnings change to price ratio, and momentum. Stocks get weighted by their growth scores multiplied by market cap, creating a portfolio that leans heavily into mega-cap growth leaders. Rebalances annually in December, keeping turnover relatively low despite the growth focus.
Key Features
- Broader than most growth ETFs — includes mid and small caps, not just S&P 500 names
- Rock-bottom 0.04% expense ratio beats actively managed growth funds charging 10x more
- Less concentrated than pure tech funds while still capturing growth themes
Risks
- Growth stocks can crater 40-50% in bear markets when investors flee to value and safety
- Heavy tech and consumer discretionary weights mean Fed rate hikes hit particularly hard
- Style rotation risk — growth has crushed value recently but these cycles reverse violently
Who Should Own This
Perfect for investors who want growth exposure but find QQQ too tech-heavy or ARK too speculative. Works as a core holding for younger investors with 20+ year horizons or as a 20-30% satellite for balanced portfolios wanting to juice returns. Not for anyone who gets queasy when their portfolio drops 30% in three months.