MDY ucits alternative: SPY4
BestFolio maps MDY to SPY4 as a exact match European-listed alternative, with ISIN IE00B4YBJ215. Eligibility depends on the investor's jurisdiction, broker and account type.
US to European mapping
Original US-listed ETF ticker used in strategy rules and backtests.
State Street SPDR S&P 400 U.S. Mid Cap UCITS ETF USD Unhedged (Acc)
Euronext listing: SPY4.PA (Paris)
Universal identifier to search at European brokers.
SPY4 tracks the same index or exposure as MDY; wrapper, costs and income treatment can still differ.
Include an issuer page or KID so the identity can be rechecked.
What is SPY4?
SPY4 is State Street SPDR S&P 400 U.S. Mid Cap UCITS ETF USD Unhedged (Acc), the European-listed product BestFolio uses when translating MDY. Most targets are UCITS ETFs; some commodity and leveraged targets are UCITS-eligible ETCs or ETPs instead. Product structure and retail eligibility must be checked for the exact ISIN.
US exposure: S&P MidCap 400. European exposure: S&P MidCap 400. Same underlying index and leverage. Accumulating; fund currency USD; primary London Stock Exchange, USD. TER 0.30% p.a.; size EUR 5,348m. Tracking exception: 60 completed months, correlation 0.975, CAGR gap -0.58 pp/year. Same underlying index remains verified; fund fees, withholding and non-synchronous month-end exchange closes affect market-price returns. Sources: issuer and justETF, checked 2026-10-07; https://www.justetf.com/en/etf-profile.html?isin=IE00B4YBJ215 The source ticker has 1x exposure and the mapped target has 1x exposure, so BestFolio can flag leverage differences during allocation translation.
Where MDY is used on BestFolio
MDY appears in 2 currently published BestFolio strategy universes or signal rules.
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