A shift toward a more restrictive monetary stance among several major central banks may signal that policymakers are placing renewed emphasis on controlling inflation, a trend that could reduce liquidity support for global equity markets, according to Barclays analysts.
Over the past week, a number of leading central banks delivered policy decisions shaped in part by inflation concerns linked to the conflict involving Iran and its impact on energy markets.
The European Central Bank led the move by raising interest rates for the first time since 2023. The Bank of Japan followed with an increase that lifted borrowing costs to their highest level since 1995. Both institutions pointed to the inflationary risks associated with energy market disruptions caused by the closure of the Strait of Hormuz and the potential for those pressures to spread more broadly through the economy.
The U.S. Federal Reserve left rates unchanged, but policymakers adopted a firmer tone. Nine Fed officials now expect at least one rate increase before the end of the year, compared with none in projections released in March. Markets also noted that the first policy statement issued under Chair Kevin Warsh highlighted the goal of achieving “price stability” while omitting any reference to maximum employment, a traditional component of the Fed’s dual mandate.
Meanwhile, the Bank of England maintained interest rates but continued to display a hawkish bias despite softer inflation and labour market figures, Barclays noted.
Monetary Tailwinds for Stocks May Be Fading
Barclays strategist Emmanuel Cau and colleagues argued that recent developments represent “a clear shift in the global monetary policy backdrop.”
They said: “After a prolonged period of synchronized rate cuts across the Western world, the tailwind from monetary policy easing is behind us. At the same time, uncertainty around the reaction function of central banks, particularly the balance between growth and inflation risks, may contribute to higher bond market volatility.”
According to the bank, a more aggressive tightening cycle—particularly from the Federal Reserve—could have meaningful consequences for financial markets.
The analysts warned that if the Fed were to move “more decisively” toward prioritising inflation and begin tightening policy again, “it would start to squeeze liquidity and weaken a key pillar of support that has underpinned bullish equity market returns over the past two years.”
Although Barclays stressed that this is not its “base case,” it remains “a risk to monitor.”
