ECB Rate Hike Sends European Stocks Plummeting to Two-Month Low

European stocks plummeted to a two-month low following the European Central Bank's (ECB) decision to increase its key interest rate to 2.5%. The move was expected, but the warning that energy-led inflation could persist longer than anticipated sent shockwaves through the market.

The ECB's message was clear: rates are higher, and they might stay that way if energy prices continue to rise. Even though President Christine Lagarde said the bank hasn't 'pre-committed' to its next move, markets still raised their expectations for future hikes.

This led to a surge in government bond yields, with Germany's 10-year yield climbing to its highest level since 2011. This matters because government bond yields serve as a benchmark return for investors, and when they rise, shares must offer a better payoff to compete. However, this usually means prices fall unless earnings grow faster.

The higher expected rate path can pressure the STOXX 600 in two ways: by lowering the valuation investors are willing to pay for future profits, and by making refinancing more expensive for companies that need to roll over debt in the next few years.