Global Stocks Surge Over 12% in Q3 as U.S. Treasury Yields Break 5%, Hitting Highest Since 2007
nashnova research
Global stocks defied headwinds to gain over 12% in Q3, adding roughly $3 trillion in market cap — yet the real source of tension is the US 10-year Treasury yield breaking 5%, the highest since the eve of the 2007 financial crisis. The widening gap between equities and bonds will define Q4.
Stocks rose 12% — where did the money come from?
S&P 500 constituents are on track for at least 30% earnings growth this year, driven almost entirely by AI-fueled profit expectations.
Pictet Asset Management's Arun Sai called it "truly unprecedented" growth — beyond the commodity super-cycle, beyond the dot-com bubble.
This means → the rally is not liquidity-driven. Markets are betting AI can lift corporate profits to an entirely new tier.
Why is the bond market more alarming than the stock market?
The US 10-year Treasury yield broke 5% this quarter, the highest since 2007. Japan's government bond yields hit multi-decade highs; German, French, and UK yields touched 17- to 19-year peaks.
In plain terms = bond prices move inversely to yields — the higher yields go, the harder bonds are being sold. This is the most severe global bond sell-off in years.
AXA chief economist Gilles Moec warned this episode is fundamentally different from the 1990s or pre-crisis rate cycles: "People are worried we are in a completely different structural trend — that is the core of the problem."
This reflects a deeper fear: not that rates are temporarily high, but that high rates may become the new normal — and never come back down.
Who is getting crushed beneath the rally?
South Korea's KOSPI fell nearly 20% this quarter, its worst since the pandemic.
Korean chip stocks had been a key driver of the AI trade; they were the first to pull back.
This means → the AI rally does not lift all boats. When valuations run ahead, the markets farthest from the epicenter get sold first.
What happened in oil and currencies?
Brent crude surged 40% this quarter, bringing its year-to-date gain to 70% — the largest single-quarter jump since the pandemic shock of Q2 2020. Bitcoin also rallied sharply.
In late July, Japan and the US staged a rare joint intervention to stop the yen from sliding toward a 40-year low. The dollar fell about 3% against the yen for the quarter.
In plain terms = soaring oil prices plus surging Treasury yields amount to a double tightening — one on the real economy, one on financial markets.
Did emerging markets hold up?
Large emerging economies broadly weathered the bond sell-off. Aberdeen's emerging-market portfolio manager Viktor Szabo said: "The large-scale risk aversion we feared hasn't materialized."
Turkey was the exception — hit this month after a senior official described a fund as a "Ponzi scheme."
But Szabo cautioned: "Where the dollar goes next will be absolutely key" — if the dollar keeps strengthening, the emerging-market cushion could give way at any time.
What is the biggest wildcard for Q4?
Gramercy's Kathryn Exum identified two questions dominating market focus: how much higher can bond yields go, and whether the AI-driven equity rally will crack.
She argued a systemic shock would require the 10-year yield to stay elevated well above current levels for a sustained period.
Geopolitical risk persists: conflicts in the Middle East and Ukraine continue, Brazil's presidential election first round is imminent, and US midterms arrive in early November — polls suggest Republicans may lose control of the House and possibly the Senate.
This means → Q4's central question is not "can stocks keep rising?" but "when does bond-market stress spill over into equities?"
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