BLDX vs SPY

BLDX vs SPY
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Quick Verdict

SPY has a lower expense ratio. SPY delivered stronger 1-year returns. SPY offers more diversification with 505 holdings.

Lower Fees: SPYHigher Returns: SPYMore Diversified: SPY

Side-by-Side Comparison

MetricBLDXSPYWinner
Expense Ratio0.60%0.09%
AUM$121M$821.1B
Dividend Yield-1.01%
Holdings39505
YTD Return+6.75%+14.24%
1Y Return-+21.71%
3Y Return (annualized)-+22.10%
5Y Return (annualized)-+13.21%
Volatility (annualized)-15.3%
Max Drawdown-8.3%-56.5%
Fund FamilyImpax Asset ManagementState Street Investment Management
CategoryEquityEquity
InceptionFeb 2, 2026Jan 22, 1993

BLDX vs SPY Performance

Impax Global Sustainable Infrastructure ETF (BLDX) is a ETF from Impax Asset Management and State Street SPDR S&P 500 ETF Trust (SPY) is a ETF from State Street Investment Management. Year to date, BLDX is up 6.75% versus a gain of 14.24% for SPY.

Risk: Volatility and Drawdowns

The deepest peak-to-trough decline in our data was -8.3% for BLDX and -56.5% for SPY. Drawdown depth is worth weighing if you expect to sell during market stress rather than ride it out.

Fees and Cost Over Time

BLDX charges 0.60% per year while SPY charges 0.09%. On a $10,000 position that is $60 vs $9 annually, a gap of $51 per year that compounds over a long holding period.

Holdings Overlap

3.4%overlap

BLDX and SPY share 12 holdings out of 530 unique holdings combined, representing a 3.4% weight overlap.

Moderate overlap means holding both could provide meaningful diversification benefits.

Top Shared Holdings

StockWeight in BLDXWeight in SPYDifference
MSFT1.56%5.50%3.94%
UNP5.46%0.26%5.20%
AWK5.01%0.04%4.97%
NEEProProPro
WELLProProPro
DLRProProPro
WABProProPro
WMProProPro
LINProProPro
OTISProProPro
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Frequently Asked Questions

Which is cheaper, BLDX or SPY?

BLDX has an expense ratio of 0.60% while SPY charges 0.09%. SPY is the cheaper option. On a $10,000 investment, that is $51 per year of difference.

What is the holdings overlap between BLDX and SPY?

BLDX and SPY share 12 common holdings with a 3.4% weight overlap. Combined, they hold 530 unique securities.

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