European stocks that trade on US exchanges as American depositary receipts (ADRs) slipped slightly late Wednesday morning, with the S&P Europe Select ADR Index down 0.12%. The modest decline masked sharp moves in individual names: Nokia jumped 8.7%, while medical device maker EDAP plunged 17%.
ADRs are a way for US investors to buy shares of foreign companies without dealing with overseas exchanges or currency conversions. Each ADR represents a certain number of shares in the underlying company, and they trade on US exchanges during US market hours. For many everyday investors, they offer a convenient way to add international exposure to a portfolio.
Why ADRs can be more volatile
But that convenience comes with some quirks. When European home markets are closed or trading thinly, there is no fresh official cash-market price for market makers to use as a reference. As a result, trading in ADRs can be thinner, and bid-ask spreads—the gap between what buyers are willing to pay and what sellers want—can widen. In such conditions, even a relatively small order can push an ADR's price significantly, especially if the move is driven by company-specific news.
That dynamic likely played a role in Wednesday's outsized moves. Nokia's 8.7% jump is a substantial gain for a large-cap stock, and EDAP's 17% drop is a sharp decline. While the index as a whole barely moved, these individual swings highlight how ADR trading can amplify both gains and losses.
For context, the S&P Europe Select ADR Index tracks a basket of European companies listed in the US. It's a broad measure of how European equities are performing for US-based investors, and it often moves in tandem with European markets, but with its own idiosyncrasies.
What this means for investors
For everyday investors, the key takeaway is that ADRs can behave differently from the underlying stocks. If you hold ADRs, be prepared for potentially wider spreads and larger price swings, especially during times when European markets are closed or when there's company-specific news. That doesn't mean ADRs are bad—they can be a useful tool for diversification—but it's important to understand the mechanics.
Also, remember that currency fluctuations can affect ADR returns. When the dollar strengthens against the euro or other European currencies, the value of your ADRs in dollar terms can decline, even if the underlying stock is flat.
Wednesday's moves come amid a broader backdrop of European stocks hitting record highs earlier this year, as earnings growth accelerated. However, recent sessions have seen some volatility, with oil prices and bond yields climbing and affecting sentiment. Investors are also keeping an eye on US inflation data, which can influence global markets.
For those considering ADRs, it's wise to look at the liquidity of the specific ADR you're interested in. Highly liquid ADRs from large companies like Nokia tend to have tighter spreads and more stable trading. Smaller or less-traded ADRs can be more volatile and harder to exit at a good price.
Ultimately, the 0.12% dip in the index is a minor blip, but the individual moves serve as a reminder that ADR investing requires attention to both the company's fundamentals and the mechanics of how ADRs trade. As always, diversification and a long-term perspective remain key.
