Two funds head-to-head: live engine reads, trailing performance, and holdings overlap from SEC filings. An engine-read comparison — not a recommendation.
Real filed-weight overlap for this pair lands as QuantLogix's SEC N-PORT sweep reaches both funds — 4,189 of ~5,000 funds indexed so far. No proxy numbers here: we show overlap only from each fund's own filings.
QuantLogix's 5-factor engine currently reads State Street SPDR S&P 500 ETF Trust (SPY) at 43/100 (sell) and Vanguard S&P 500 ETF (VOO) at 62/100 (buy). VOO carries the stronger composite read by 19 points, led by technical at 63/100. SPY's strongest leg is options at 64/100. On trailing price performance, VOO leads over the last year (+18.7% vs +18.6% for SPY). Signals recompute throughout the trading day — the balance can shift with the tape.
🤖 Want the deeper take? Pro runs a 10-agent AI debate on either name — 5 analysts, bull vs bear, a risk read, and a trader's verdict. See Pro →Educational market analysis, not investment advice. QuantLogix does not provide personalized recommendations. SPY ETF page · VOO ETF page · ETF rankings · Equities Network · Verified track record