PSI vs SMH: Same Industry, Different Semi Indexes

Overview

PSI and SMH are both technology-focused ETFs tracking semiconductor equities, but they differ in breadth, index construction, and cost. The key distinction is concentration: SMH's defined 25-name mandate creates tighter tracking and lower fees, while PSI's broader mandate permits larger weightings across a wider semiconductor landscape.

How they differ

SMH's $66.8B dwarfs PSI's $2.66B, reflecting SMH's popularity as the category flagship. The first operational difference is index methodology: SMH explicitly tracks the MVIS US Listed Semiconductor 25 Index, constraining holdings to 25 names and tilting the portfolio toward large-cap heavyweights; PSI's broader construction captures more mid-cap and niche semiconductor exposure. Fee-wise, SMH's 0.35% undercuts PSI's 0.55% by 20 basis points—a meaningful gap over time. Beta reveals risk calibration: SMH's 2.06 sits below PSI's 2.37, suggesting SMH's concentrated structure experiences slightly less magnified moves relative to the broader market. Income is negligible in both: PSI yields 0.04% and SMH 0.19%, reflecting the growth orientation of semiconductor equity.

Who each is best for

PSI: Investors seeking broader exposure across the semiconductor value chain, including smaller cap names and companies outside the mega-cap huddle. Fits allocations that tolerate higher volatility in exchange for exposure to a wider swath of semiconductor innovation.

SMH: Fits investors who want tight, index-tracking exposure to the 25 largest U.S.-listed semiconductor stocks with lower fees. Works well for those comfortable with significant concentration in mega-cap semiconductor leaders and seeking an established, liquid core holding.

Key risks to know

• Concentrated industry and single-region exposure. Both funds carry semiconductor-sector risk; SMH's 25-stock mandate intensifies this by design, creating meaningful sensitivity to a narrow set of companies and any sector-wide headwind (chip demand cycles, geopolitical supply-chain disruption, regulatory pressure on exports).

• High beta amplifies downside volatility. PSI's 2.37 and SMH's 2.06 both indicate 2x-approximate sensitivity to broad market moves, meaning sharp equity declines will hit these funds harder than the market index. In a bear market, both will likely underperform.

• Valuation exposure in a cyclical sector. Semiconductor equities are highly cyclical and historically expensive during bull runs. Both funds lack natural hedges or income-dampening; at near-zero yields, downside risk is unobstructed.

• SMH's narrower index may diverge from broader semiconductor trends. The 25-stock constraint means SMH excludes mid-cap and smaller semiconductor players that might outperform in a rotation away from mega-cap dominance. Both carry significant sector and volatility risk—neither is a defensive play, and past performance does not predict future results.