Global stock markets climbed to new highs this week, extending a rally that has erased losses from the Iran war. The bond market tells a different story. Yields on U.S. government debt have surged 70 basis points since the conflict began, a move that analysts at Barclays and Bank of America say leaves equities vulnerable to a sharp pullback.
The S&P 500 hit a fresh all-time high last week. It has gained 7.4% this year. The Nasdaq Composite also reached a record.
Both indexes have risen roughly 7% since the Iran conflict erupted in late February, shrugging off geopolitical turmoil that initially sent markets tumbling. Behind the rally sits a mountain of cash. U.S. equity funds absorbed $70 billion in net new inflows over seven weeks, Barclays analysts reported Tuesday.
That marks a 97th-percentile streak since 2000. Year-to-date inflows total $180 billion, more than double the five-year median. But the bond market has moved in the opposite direction.
Treasury note has climbed about 70 basis points since the war started. Bond prices fall as yields rise. The 30-year Treasury yield this week touched levels last seen in 2007. "Bond and equity markets have taken diverging views to the macro environment," Neil Birrell, Chief Investment Officer at Premier Miton Investors, told CNBC.
Bonds reflect underlying pessimism, he said. Equities are betting the Iran war resolves quickly and macro risks fade. That gap is now ringing alarm bells.
Bank of America's latest fund manager survey, published Tuesday, showed a record jump in equity allocations during May. Managers shifted from a net 13% overweight position in April to a net 50% overweight this month. The poll drew responses from panelists managing $517 billion in assets.
The bank's Bull & Bear Indicator is nearing a "sell-signal" level. Early June looks "ripe for profit taking," BofA analysts warned. Bond yields will determine the size of any pullback.
Barclays struck a similar note. "Now the pendulum could swing backwards," its analysts wrote. Portfolio managers have already reduced equity exposure in recent days. equity positioning. Foreign demand for American stocks is accelerating.
Persistently high oil prices are a factor. But portfolios are fully invested and macro headwinds are mounting. "The risk of a near-term unwind has materially increased," Barclays stated. Paul Skinner, investment director at Wellington Management, sees equities as vulnerable. "We do think it leaves them vulnerable to a correction," he told CNBC's "Squawk Box Europe" on Tuesday.
He does not believe inflation is embedded long-term. "This could be just a correction rather than the start of a bear market."
The central bank response is everything. Skinner pointed to the U.K. in the early 1970s. If policymakers move too slowly on inflation, a stagflationary environment could emerge. That would be "for risk assets."
He prefers a different historical parallel. "We want this to be more like the '79 oil shock, where central banks kept rates high and we avoided that stagflationary problem," Skinner said. Risk assets performed far better in that scenario, even with elevated rates. The divergence extends well beyond American markets.
The MSCI World Ex USA index has clawed back most of its wartime losses. It sits roughly 3% below pre-conflict levels. At its low point, one month into the war, the index had shed almost 9%.
Meanwhile, the FTSE World Government Bond index, which tracks sovereign debt from more than 20 countries, shows an aggregated yield increase of about 55 basis points. The pattern repeats across developed economies: rising optimism in stocks, macroeconomic anxiety in bonds. This week brought a shift. fell as the 30-year Treasury yield climbed.
The sell-off was not dramatic. It was enough to make traders pause. Deutsche Bank analysts offered a counterpoint. "None of the conditions are yet in place that caused more aggressive selloffs in the past," they wrote Tuesday.
Their analysis of historical shocks shows a deeper rout requires one of three triggers: a sustained oil shock, economic data clearly in contractionary territory, or aggressive central bank tightening. "So far, it's tough to argue we have any of these," Deutsche Bank noted. The closest candidate is the oil shock. Markets are pricing in a longer period of elevated crude prices.
But six-month Brent futures still trade marginally above $90 per barrel. Declining energy intensity means a given oil price packs less economic punch than it used to. "Unless we see a clear change in these fundamentals, then the resiliency of risk assets is not particularly," Deutsche Bank concluded. It fits the historical record of recent decades.
Birrell at Premier Miton sees corporate earnings as the bull case's backbone. Strong profits have supported equity optimism. Sell-offs get bought.
Buyers take advantage of lower prices. That pattern has limits. "Eventually, ongoing high bond yields when combined with any or all of higher inflation, slowing growth, Iran war escalation or elongation, weaker corporate earnings, AI-induced strain or more geopolitical stress, are likely to have a negative impact on equity markets," Birrell warned. The question is how much damage and how long before buyers return. "It's possible they step to the side."
Barclays raised a specific concern: whether bonds will "crash the AI party" in equity markets. Treasuries. But equity longs look exposed as yields approach a critical inflection point.
Historically, higher rates at that level begin to weigh on stocks. Spillover risk has re-emerged. The Iran conflict pushed stock-bond correlations back into negative territory.
That revives a Covid-era regime where equities react strongly negatively to inflation surprises and positively to growth surprises. The policy says one thing. The reality says another.
What this actually means for your family: rising bond yields translate to higher borrowing costs. Mortgage rates, car loans, and credit card interest all climb when the bond market prices in persistent inflation. A stock market correction hits retirement accounts and college savings.
The divergence is not an abstract Wall Street debate. It flows directly into household budgets. Both sides claim victory.
Here are the numbers. Equity bulls point to $180 billion in year-to-date inflows and record highs. Bond bears point to 70 basis points of yield increases and 2007-level long-term rates.
The resolution will determine whether 2026 rewards savers or borrowers, retirees or homebuyers. Why It Matters: A sustained equity-bond divergence has historically preceded major market dislocations, including the 2000 dot-com bust and the 2008 financial crisis. When stocks price in optimism while bonds price in risk, one market is wrong.
The correction, when it comes, tends to be swift and broad, wiping out household wealth and tightening financial conditions for ordinary borrowers within weeks. Key takeaways: - The S&P 500 and Nasdaq hit all-time highs last week, while 30-year Treasury yields touched levels unseen since 2007. - Bank of America's fund manager survey recorded the largest-ever monthly jump in equity allocations, reaching a net 50% overweight in May. - Deutsche Bank countered that no historical trigger for a major selloff—sustained oil shock, contractionary data, or aggressive rate hikes—is currently in place. What comes next: The early June window that Bank of America flagged as "ripe for profit taking" is now open. inflation print and any escalation in the Iran conflict as immediate catalysts.
Central bank rhetoric in the coming weeks will either validate bond market caution or give equities fresh room to run. The divergence cannot last forever. When it closes, the direction will matter enormously.
Key Takeaways
— - The S&P 500 and Nasdaq hit all-time highs last week, while 30-year Treasury yields touched levels unseen since 2007.
— - Bank of America's fund manager survey recorded the largest-ever monthly jump in equity allocations, reaching a net 50% overweight in May.
— - Barclays warned the risk of a near-term unwind has "materially increased," with portfolio managers already reducing equity exposure.
— - Deutsche Bank countered that no historical trigger for a major selloff—sustained oil shock, contractionary data, or aggressive rate hikes—is currently in place.
Source: CNBC
