Taux américains à 5,3 % : le signal d’alarme pour la Bourse
A September inflation report showing better-than-expected US inflation (3% vs 3.3% expected) paradoxically caused stock markets to fall and interest rates to rise to 5.3% because the calculation methodology changed, masking continued economic heat that prevents the Federal Reserve from pausing rate hikes.
Summary
The video analyzes why a seemingly positive US inflation report in September produced negative market reactions. The Personal Consumption Expenditure (PCE) inflation came in at 3% for core inflation versus the expected 3.3%, yet the Dow Jones and S&P 500 closed September in the red, with 10-year Treasury yields rising to 5.3%.
The speaker explains that the improvement was largely illusory due to methodological changes the Bureau of Economic Analysis made on September 30th. Most significantly, the way portfolio management services are measured changed from using a producer price index (which rose nearly 18% annually) to measuring sector activity through employment data. This change was retroactive, recalculating inflation data back to 2021. Under the old methodology, inflation had been higher; under the new one, July's inflation was revised downward.
The speaker clarifies that macroeconomic figures are conventions, not absolute truths. He provides the example of US unemployment: while the official August rate was 4.1%, the broader measure accounting for discouraged workers and those no longer actively searching stands at 7.7%—nearly double. Similarly, household consumption adjusted for inflation grew 0.6% (the strongest in a year), and household incomes only grew 0.2%, meaning consumers are drawing down savings.
The market's true concern is forward-looking. The bond market is already pricing in September's inflation data (not yet published), with the Cleveland Federal Reserve's real-time inflation model showing an increase of 0.43% month-over-month. With employment expected to remain strong (90,000+ job creations) and unemployment stable at 4.1%, nothing prevents the Federal Reserve from raising rates again in October or, more likely, December. At 5.3%, the 10-year Treasury yield is at its highest since 2007, creating pressure on stock valuations since risk-free returns must be justified against equity returns.
About this episode
Dans ce débrief, on décrypte les derniers chiffres du PCE, les révisions méthodologiques et la réaction des marchés. On regarde aussi ce que le taux de chômage officiel laisse de côté, la résistance de la consommation américaine et les signaux envoyés par les obligations. Au programme : • Pourquoi une révision statistique ne signifie pas forcément une baisse des prix • La différence entre le chômage officiel U-3 et la mesure élargie U-6 • Ce que révèlent les revenus et les dépenses des ménages • Le rôle du taux américain à 10 ans dans la valorisation des actions • Les spreads high yield comme indicateur du risque de crédit 00:00 Inflation et marchés : les chiffres à décrypter 00:39 Comprendre l’indice PCE 01:36 Ce que change la révision des statistiques 03:19 Chômage : ce que mesure le taux officiel 04:16 La consommation américaine résiste 05:31 Pourquoi les taux obligataires remontent 06:28 Le taux à 10 ans et les valorisations 06:57 Le signal du crédit high yield 07:09 Les points à retenir SOURCES : BEA — Revenus, consommation et inflation PCE : https://www.bea.gov/news/2026/personal-income-and-outlays-august-2026 BLS — Mesures du chômage : https://www.bls.gov/news.release/empsit.t15.htm FRED — S&P 500 : https://fred.stlouisfed.org/series/SP500 FRED — Taux américain à 10 ans : https://fred.stlouisfed.org/series/DGS10 FRED — Spread high yield américain : https://fred.stlouisfed.org/series/BAMLH0A0HYM2<hr /><p style="color: grey; font-size: 0.75em;"> Hébergé par Acast. Visitez <a href="https://acast.com/privacy" rel="noopener noreferrer" style="color: grey;" target="_blank">acast.com/privacy</a> pour plus d'informations.</p>
Key Insights
- The speaker argues that the September inflation improvement was largely a statistical artifact resulting from the BEA's retroactive change in how portfolio management services are measured, switching from a producer price index (up 18% annually) to employment-based metrics, rather than genuine disinflation.
- The speaker claims that official macroeconomic figures mask broader economic realities—the 4.1% unemployment rate excludes 1.7 million discouraged or passive job seekers, bringing the effective rate to 7.7%, demonstrating how measurement conventions shape policy perception.
- The speaker contends that the bond market is forward-looking and already pricing in expected September inflation data (not yet published) rather than reacting to August's reported improvement, which explains why Treasury yields rose despite a 'good' inflation report.
Topics
Transcript
FX's American Horror Story returns for an unrivaled 13th installment with the iconic horrors you love to fear and an all-star cast reprising fan favorite roles. Light your candles, draw your pentagrams and prepare for a supreme surprise. FX's American Horror Story 13 now streaming on Hulu. Alors, mois de septembre, on a eu le chiffre d'inflation aux Etats-Unis qui est ressorti meilleur qu'attendu. Pas un peu meilleur, beaucoup meilleur. On est à 3% sur l'inflation sous-jacente, on l'attendait à 3,3%. Dans ces cas-là, normalement, on sort le champagne. Les taux baissent, les actions s'envolent. Résultat, les taux aux Etats-Unis ont fini en hausse, le 10 ans à 5,3%. Dow Jones et S&P 500 terminent le mois de septembre dans…
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