What Happened
TREE NEWS reports: Michael Hartnett, Chief Investment Strategist at BofA Securities, has issued a stark warning: a Democratic sweep in the upcoming U.S. midterm elections could trigger a stock market decline of more than 10%, weaken the dollar, lower bond yields, and burst the AI bubble. In his latest Flow Show weekly report, Hartnett identifies a ‘Democratic sweep’ as one of the biggest tail risks currently facing markets—yet one that investors have barely priced in. Polymarket data shows the probability of a Democratic sweep has risen to 50%, far above the 10% odds of a Republican sweep. President Trump’s approval rating, hovering between 35% and 40%, is significantly below the historical average of 53% for a president two months before midterms, reinforcing Hartnett’s caution.
Bond Market Flashes First
Hartnett argues that the most notable event last week was not the stronger-than-expected jobs data but the global bond market selloff. The 10-year U.S. Treasury yield climbed to 4.81%, nearing levels seen during the 2008 financial crisis, while the 30-year yield hit 5.31%, the highest since 2007. Japan’s 10-year yield broke above 3.0% for the first time since 1996, and the 30-year JGB yield reached 4.2%. In Europe, Germany’s 10-year yield rose to 3.38%, a post-2011 high, with spreads versus France and Italy widening to levels not seen since the 2012 eurozone debt crisis. The Bloomberg Global Bond Yield Index is at its highest since 2007, just 1% shy of its century peak. Hartnett distills this into a core thesis: ‘Bonds dominate the bubble.’ He argues that long-end yields—not equity narratives—are the true anchor for the AI trade. Until global 30-year yields fall below 5%, builders and financiers of AI infrastructure will underperform AI application companies.
Market Impact: The Transmission Mechanism
Hartnett outlines a clear transmission path if Democrats sweep both chambers. A shift from ‘populist capitalism’ to ‘populist socialism’ would mean higher taxes and more regulation, negatively impacting corporate earnings. Policies aimed at lowering inflation, improving healthcare access, and reducing K-shaped wealth inequality would directly challenge the AI capex boom and the ‘too-big-to-fail’ Wall Street ecosystem. Additionally, a weakened Trump political mandate would undermine his ability to push priorities like AI, resource monopolies, and diplomatic pressure. In this scenario, Hartnett recommends shorting financial stocks and the dollar as the best hedges. Equities could fall over 10%, the dollar weakens, and bond yields decline. International equities would outperform, with Europe ahead of Asia.
Conversely, if Republicans unexpectedly hold both chambers, risk appetite would surge, giving the AI bubble a green light and reviving the dollar’s ‘exceptionalism’ narrative. The most likely outcome—a Republican Senate and Democratic House—would correspond to moderate risk appetite, with gridlock seen as ‘Goldilocks.’
Strategic Allocation: Long Commodities and Gold, Avoid Crowded AI Trades
Within this macro framework, Hartnett maintains his cross-cycle core recommendation: long commodities and gold as hedges against inflation and geopolitical risk. He points out that governments’ ‘whatever it takes’ fiscal interventions are suppressing long-end yields while supporting nominal GDP growth, making the strategic logic of ‘any asset over bonds’ still valid. On AI, Hartnett warns that hyperscalers’ free cash flow has turned negative under capex pressure, making the AI bubble ‘prone to burst at any time.’ He suggests a post-bubble playbook: ‘long humiliation, short arrogance,’ favoring long-duration bonds and defensive sectors like consumer staples, mining/raw materials, and healthcare, while avoiding crowded AI infrastructure plays. From a long-cycle perspective, Hartnett notes that U.S. equities have returned 15% annually over the past decade, commodities 11%, and bonds -2%—the worst bond performance in nearly a century. Historically, negative long-term bond returns have often marked good entry points for stocks (1939, 1974, 2009) and commodities (1933, 2018), providing a historical basis for his tactical Q4 bullishness on bonds.
Key Takeaways for Investors
- Political risk is underpriced: A Democratic sweep is now a 50% probability per prediction markets, yet equity positioning does not reflect the potential 10%+ downside.
- Bond yields are the linchpin: Rising global long-end yields are the biggest threat to AI capex; watch 30-year yields for signals.
- Hedge accordingly: In a Democratic sweep scenario, short financials and the dollar; favor international equities, especially Europe.
- Stay defensive in AI: Avoid crowded AI infrastructure trades; consider long-duration bonds and defensive sectors.
- Commodities and gold remain core: As hedges against inflation and fiscal-driven nominal growth, they are strategic holdings.
