See what your funds really hold
You might own three ETFs and still have half your money in the same ten stocks. Add your funds below to see your combined, look-through exposure — free, no signup, straight from official holdings files.
Popular overlap checks
SPLG vs SPY 87.9% SPY vs XLK 37.6% SPLG vs XLK 36.4% DIA vs SPY 27.8% DIA vs SPLG 27.3% SPYD vs XLRE 25.9% SDY vs SPYD 20.5% SDY vs XLP 16.2% DIA vs XLF 15% DIA vs XLK 14.2% SDY vs SPLG 14.2% SDY vs SPY 14.2%
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Why overlap matters
Funds are wrappers; stocks are what you own. Two "different" ETFs often hold the same mega-cap names, so buying both concentrates — not diversifies — your portfolio. OverlapCheck reads the official holdings files and does the arithmetic for you: exact shared holdings, weight-based overlap, and your true combined exposure.
Built in the open. Calculations verified against official issuer files — see methodology.