Goldman Sachs: AI Selloff, French Bond Crisis Make Yen the Cheapest Hedge

Goldman Sachs: AI Selloff, French Bond Crisis Make Yen the Cheapest Hedge

TREE NEWS reports: Goldman Sachs’ FICC team has linked three seemingly unrelated market narratives—a sharp selloff in AI stocks, a historic French bond crisis, and an undervalued Japanese yen—into a single story. In a note to institutional clients, the bank argues that long yen positions now offer the most cost-effective hedge against a growing nexus of risks, as all three threads ultimately point to a weaker dollar and capital repatriation to Japan.

The AI Credit Crack

Disappointing earnings from AI giants have reignited doubts about the durability of the technology trend. Tesla’s capital expenditure cuts, Meta’s AI spending pushing its credit default swaps to record highs, and Lam Research’s weak guidance have prompted hedge funds to accelerate their exit from the tech sector. But the real epicenter, Chryssafis notes, is not equities but the credit market—particularly bonds issued by lower-rated borrowers. So far in 2026, dollar-denominated project finance bond issuance has reached about $105 billion, almost entirely directed at data centers and chip/compute financing. That is roughly four times the previous pre-AI-era record of $25 billion in 2020 and nearly triple the 2025 level, which was itself a record. Goldman’s credit strategy team remains underweight investment-grade tech debt and expects growing dispersion among AI-related issuers, especially in project finance. Bernstein estimates a $76 billion funding gap for CoreWeave, suggesting that “high dispersion” may mean some bonds get paid while others do not.

France’s Bond Market Off the Rails

In Europe, the French bond crisis is intensifying. The spread between French and German 10-year yields has widened to 173 basis points, surpassing the 2011 eurozone debt crisis and setting a record since the euro’s creation. The French 10-year yield has breached 5.08%, while Italian yields are now about 50 basis points lower than France’s—an inversion unthinkable during the 2011 crisis. Goldman strategists see lower energy prices as the clearest path to compressing the spread, as it would improve growth and fiscal deficit risks, support expectations for limited ECB rate hikes, and reduce rate volatility. Without such relief, wider spreads and more pressure on the euro are likely. The bank’s trading desk has observed rising demand for euro-dollar downside options, with implied volatility still relatively low historically. The five-year real rate differential has narrowed to -136 basis points, matching levels when EUR/USD traded near 1.03 in early 2025, yet the pair remains around 1.12—implying further downside.

Yen: The Cheapest Hedge

The most striking part of the report ties the AI trade directly to the yen. Goldman’s GSDEER long-term fair value model shows the yen is about 40% undervalued versus the dollar, the largest deviation among currencies it tracks. The logic: Japan has for decades allocated excess savings to U.S. financial assets. If the AI-driven “American exceptionalism” narrative falters and the U.S.-Japan rate differential narrows, capital repatriation to Japan will accelerate, manifesting as dollar selling and yen buying. Three structural factors already point to yen strength: Japanese officials’ continued support for a stronger currency, Prime Minister Takaichi’s push for domestic capital to increase allocation to local financial assets, and the Bank of Japan’s gradual rate hike path—supported by Japan’s largest labor union seeking a 6% target for 2027 spring wage negotiations. Moreover, hedging costs are extremely low. Two-year USD/JPY at-the-money implied volatility is 9.9, well below the 20-year average of 13.8 and near the 20-year low of 8.4. Goldman argues that buying protection for the most undervalued currency in its coverage at near-historic low prices is highly attractive.

Correlation Flip: AI Down, Yen Up

Since October 14, when Goldman’s AI leaders basket fell 4.7% in a single day, its correlation with the S&P 500 has jumped from 0.73 to 0.91; with 10-year Treasury yield changes, it flipped from -0.13 to +0.19; and with USD/JPY, from -0.34 to +0.46. The market’s logic chain is now clear: AI falls → S&P falls → Treasury yields fall → yen rises. The trading desk continues to favor “equity downside/yield downside” dual digital options as a growth-shock hedge, noting that recent realized correlations have returned to the pattern of “AI down, 10-year yield lower, USD/JPY softer.” The only scenario that could break this logic is Goldman’s own tail risk of Brent crude surging above $140, which would push yields higher alongside falling stocks, rendering the dual hedge ineffective. But until then, with the S&P 500’s correlation to the single AI basket at 0.91, “diversification” has a new meaning: hold yen.

Key Takeaways for Investors

• AI credit risk is the real fault line: The surge in data-center project finance bonds warrants close scrutiny, especially among lower-rated issuers.
• French bonds are in uncharted territory: The record spread over Bunds and inversion with Italy signal deep fiscal and political concerns, with knock-on effects for the euro.
• The yen is historically cheap: A 40% undervaluation and low hedging costs make long yen an attractive asymmetric hedge against a broader risk-off move.
• Correlations have flipped: The AI trade, Treasury yields, and USD/JPY are now tightly linked, meaning traditional diversification may fail—currency exposure could be the new diversifier.