The Great Rate Debate

Episode Summary

Executive Summary: The episode centered on the August CPI and related inflation data, which came in somewhat firmer than expected, with energy, wireless services, vehicle prices, hotel prices, and AI-related hardware costs driving the miss. The hosts then debated how much inflation pressure is temporary versus structural, and whether the Fed will hike next week. Market odds moved sharply toward a hike, though the panel remained divided on whether that’s the right policy move.

Main Topics: August CPI: firmer-than-expected inflation (Priority: 5/5): Headline CPI rose 0.4% m/m and core CPI 0.29% m/m, with several categories surprising to the upside. The discussion emphasized that energy led the headline gain, while wireless services, vehicles, lodging, and AI-linked hardware pushed core higher. What is driving inflation now (Priority: 5/5): The panel ranked the main forces behind inflation: higher energy prices from geopolitical disruption, AI-driven capex and component shortages, tariffs, and a possible immigration/labor-supply effect in certain industries. PCE outlook and BEA methodological changes (Priority: 4/5): Using CPI and PPI as inputs, Matt estimated August core PCE at about 0.22% m/m and around 3.1% y/y, with some downward pressure from methodology changes affecting software, legal services, and financial services weights. Fed decision next week (Priority: 5/5): The group debated whether the Federal Reserve will hike 25 bps at the next meeting. Market-implied odds rose to about 90%, but the hosts disagreed on whether the data justify a hike or whether the Fed should wait. Market reaction and financial conditions (Priority: 4/5): Equities rallied modestly despite hotter inflation data, while Treasury yields reflected mixed signals: the 2-year rose on higher hike odds, but the 10-year was little changed. The panel noted tighter broader financial conditions. Stats game and listener questions (Priority: 3/5): The episode included the recurring stats game, highlighting smartphone deflation, diesel prices, and inflation expectations, plus listener questions about podcast habits, New York Fed credit data, and labor-force participation.

Key Arguments: Headline inflation was driven largely by energy, especially gasoline, while core inflation was unexpectedly firm because of wireless services, vehicles, lodging, and AI-related hardware demand. Wireless phone service inflation may reflect BLS methodology more than true pricing power, making the series unusually volatile and less straightforward to interpret. Motor vehicle insurance is easing as a lagged response to slower vehicle price growth, but repair and servicing costs are still rising. Food-at-home inflation remained softer than expected despite elevated diesel costs, suggesting limited pass-through so far from energy to groceries. AI buildout is becoming a real inflationary force because demand for software, memory, and computing hardware is pushing prices higher. Tariff effects are present but still secondary; if anything, the tariff story may matter more going forward if trade tensions persist. Immigration and labor-supply constraints may be contributing to firmer wage growth and prices in some labor-intensive sectors, though the evidence is circumstantial. Estimated August core PCE is below core CPI, around 0.22% m/m and 3.1% y/y, but methodological changes could slightly alter the final reading. Markets interpreted the CPI as hawkish for the Fed, sharply increasing odds of a 25 bp hike next week. The panel was split on policy: some argued for a hike given inflation and financial conditions, while others argued the Fed should wait because inflation pressures still look contained and mostly shock-driven.

Data Points: Headline CPI, August m/m: 0.4% - In line with consensus; driven mainly by energy prices. Headline CPI, August y/y: 3.4% - Unchanged from July. Core CPI, August m/m: 0.29% - Rounded to 0.3%; firmer than the hosts’ forecast. Core CPI, August y/y: 2.4% - Down from 2.5% in July due to base effects. CPI energy, August m/m: 2.1% - Energy was the main driver of headline CPI. CPI gasoline, August m/m: almost 4% - A key component of the energy increase. Food at home CPI, y/y: 2.2% - Softer than expected despite elevated diesel prices. New vehicles CPI, August m/m: 0.3% - Part of the core CPI upside surprise. Used vehicles CPI, August m/m: 0.4% - Another contributor to core CPI strength. Wireless phone service CPI, August m/m: almost 6% - Largest monthly increase in the series’ history, though methodology changes may be inflating volatility. Lodging away from home CPI, August m/m: 2.4% - Hotel prices jumped after a prior decline, lifting shelter inflation. Rent CPI, August m/m: 0.17% - Continued moderation in shelter costs. Owners’ equivalent rent (OER), August m/m: 0.19% - Also showed mild monthly growth. Shelter CPI, August m/m: 0.3% - Lifted by hotel prices despite mild rent and OER readings. Computer software CPI, y/y: 25% higher - Linked to AI infrastructure demand. Computers/peripheral equipment CPI, recent months: almost 0.4% m/m in July and August - Driven largely by memory/chip demand related to AI buildout. Motor vehicle insurance CPI, y/y: 5% - Down meaningfully from prior spikes; continued to decline on the month by nearly 1%. Repair and servicing prices, y/y: 2.5%-2.6% - Cited as still rising and harder to interpret as a trend. PPI, August m/m: 0.4% - Broadly in line with expectations; energy again the main driver. PPI energy, August m/m: 4.2% - Gasoline prices rebounded after July’s dip. Estimated headline PCE, August m/m: 0.3% - Derived from CPI and PPI inputs. Estimated core PCE, August m/m: 0.22% - The panel’s estimate after methodology adjustments. Estimated core PCE, August y/y: 3.1% - Could be around 3.3% without methodology changes. Estimated headline PCE, August y/y: 3.5%-3.6% - After adjusting for methodological changes; about 3.7% without them. Fed hike probability for next week: close to 90% - Market-implied odds after the CPI release. 10-year Treasury yield: about flat / down 1-2 bps - Long-end yields did not rise much despite hotter inflation. 2-year Treasury yield: up several bps - More sensitive to next week’s Fed decision. Equities: up about 1% - Interpreted as a relief rally. Smartphone prices, y/y: -12.2% - Stats game example of hedonic quality adjustment lowering measured prices. Diesel prices in California: $9.99 - Stats game example illustrating price ceilings/rounding issues at some stations. Five-year breakeven inflation: 2.46% - Stats game example of rising market inflation expectations.

Pivotal Quotes: "What could be better? I know. That's why Matt's on because today we've got the consumer price index for the month of August." — Mark Sandy: Opening the main economic discussion and framing CPI as the central event. "I think the AI story is probably the most interesting one, has become the most interesting one because it is, you know, Fed policy is designed... to slow down CapEx." — Matt Collier: Arguing that AI-related investment is now a meaningful inflation and policy factor. "The one thing that I don't think is unambiguous is that the prevailing story there is that [energy shock] has not spilled over broadly, and I think that's largely a good story." — Matt Collier: Explaining why the panel sees limited pass-through from energy prices into broader inflation.

Implications: Inflation is still above target and the Fed is under pressure to respond, but the data suggest much of the upside is concentrated in energy and a few volatile categories. Policy and markets may remain volatile as the Fed weighs shocks versus persistence.