Summary: Bank of America strategist Michael Hartnett says the current equity rally rests on two main supports - bullish market positioning and optimistic profit outlooks. In a weekly flow show report, he highlighted a set of June data releases and central bank meetings that could lift long-term yields across major markets and undermine both pillars at once.
Hartnett identified several specific flashpoints that may push 30-year yields above critical thresholds - above 6% in the U.K., above 5% in the U.S., and above 4% in Japan. The calendar items he flagged include Friday's U.S. payrolls report, a U.S. consumer price index print on the 10th, the European Central Bank and Bank of Japan policy meetings mid-month, and the Federal Reserve's first meeting under new chair Kevin Warsh on the 17th.
He framed the Fed meeting as particularly consequential: "Warsh too dovish and long-end heads toward 6%; Warsh too hawkish and S&P 500 pullback toward 7,000," Hartnett wrote in the note.
The strategist also pointed to an uncomfortable inflation backdrop. He noted that 46 of 68 global central banks are currently overshooting either their inflation target or the midpoint of their target range, which he interprets as evidence policymakers are broadly behind the curve. Markets are already pricing in additional rate action, and yield curves are bear flattening as that repricing unfolds.
Hartnett highlighted recent U.S. inflation momentum: with three-month monthly CPI averaging 0.6%, a May print above 0.4% would push annual inflation above 4%. He cited past data - based on the last 100 years - indicating that annual inflation above that 4% threshold has, on average, preceded S&P 500 declines of 4% over the following three months and 7% over six months.
On positioning, BofA's Bull & Bear Indicator moved higher to 8.7 from 8.5, extending its sell-signal into a third consecutive week. Household equity wealth has risen substantially year-to-date, up $6 trillion, following gains of $10 trillion in 2025 and $9 trillion in 2024. Hartnett characterized this dynamic as a wealth-equity "boom loop" that he says is feeding a wealth-price spiral, and he noted that Trump’s inflation approval is now below the Biden-era lows.
The latest asset flows underline a notable split between fixed income and risk assets. Bonds saw their largest weekly inflow on record at $39 billion, led by investment-grade debt which attracted $20.1 billion - the second-largest IG inflow on record. Cash allocations increased by $122 billion. Equities drew $23.1 billion overall, with U.S. large-caps accounting for $18.3 billion of that total.
Within active flows, U.S. growth funds experienced their largest outflow since December, shedding $13.1 billion, while consumer funds recorded outflows of $1.7 billion - the biggest since December 2024. Precious metals and digital assets also saw net redemptions, with gold losing $3.1 billion and crypto funds down $2 billion.
Context and implications: Hartnett's note lays out a scenario in which an acceleration in long-term bond yields, triggered by incoming data and central bank decisions in June, could simultaneously erode investor positioning and corporate profit assumptions that support current equity valuations. The strategist's assessments tie together inflation prints, central-bank reactions, yield-curve dynamics, and fund flows to explain how the market's two supporting pillars could be threatened.
What to watch next:
- U.S. payrolls report (this Friday) and U.S. CPI on the 10th for signs of persistent inflation momentum.
- ECB and BoJ policy decisions mid-month, which Hartnett counts among the potential triggers for a rise in long-term yields.
- The Federal Reserve meeting on June 17, the first under chair Kevin Warsh, which Hartnett says could swing long-term yields sharply depending on Warsh's tone.
This analysis presents a scenario-based warning rather than a prediction. The note links recent asset-flow patterns and central-bank positioning to the potential market outcomes that could unfold if yields move decisively higher in June.