- The U.S. Bureau of Economic Analysis plans to adjust the method of calculating inflation indicators, putting downward pressure on the core Personal Consumption Expenditures (PCE) Price Index for May.
- Goldman Sachs predicts that the year-on-year increase in core PCE for May may fall from the previous 3.4% to 3.2%, while JPMorgan expects a revision to 3.3%.
- This methodological revision will be retroactive to 2021, and the results of the adjustments will be officially included in the GDP revision report disclosed on September 30.
Recent documents disclosed by the U.S. Bureau of Economic Analysis show that the official method for calculating prices in specific service and technology components of the core PCE Price Index will undergo structural adjustments. This move indicates that the Federal Reserve's most closely watched inflation measurement tool will face a systematic reconstruction of historical data. Due to technical biases in the underlying statistical model when capturing price changes in specific service sectors, management has decided to optimize the algorithm to improve data accuracy. Market analysts point out that since the timing of the adjustment coincides with a critical period for the Federal Reserve's marginal pricing of monetary policy paths, any change in statistical methodology will directly trigger an immediate reaction in the fixed income market.
Revisions in Statistical Weights Trigger Core Indicator Reassessment
The core focus of this methodological adjustment is on the price calculation methods for portfolio management, investment advisory services, legal services, and computer software and accessories. As a deeply derived indicator of the monthly personal income and expenditure report, the core PCE Price Index's fluctuations are largely affected by systematic disturbances in the prices of these high-frequency service industries. Wall Street macro strategists point out that since the prices of these productive service industries have seen marginal declines due to slowing wage growth over the past few quarters, the fine-tuning of the calculation method may accelerate this trend's presentation in the official final data, thereby nominally lowering the overall core inflation center.
Investment Banks' Forecast Divergence and Data Rounding Effects
Regarding the marginal impact of this statistical method change, major Wall Street investment banks have provided slightly divergent predictions in their quantitative model calculations. Goldman Sachs economists noted in their latest research brief that based on a re-simulation of the service price basket weights, the year-on-year increase in the core PCE Price Index for May is expected to be explicitly revised down from the 3.4% announced last week to 3.2%, showing a substantial relief effect from the technical correction. In contrast, JPMorgan's quantitative team, after precise verification with data rounding, tends to believe that the final official revised data will slightly remain at the 3.3% level, indicating that different institutions still hold cautious differences in assessing the price stickiness of specific hardware components such as software and accessories.
Monetary Policy Outlook and Historical Data Retrospective
The more macro and far-reaching arrangement is that the U.S. Bureau of Economic Analysis has clearly stated that this revision will deeply trace back to historical data from 2021. This long-term historical retrospective means that the inflation curve, which the market has relied on for the past five years, will undergo an overall shift. JPMorgan economist Abiel Reinhart pointed out that due to the high underlying dependency of related items in the PCE Index on the Consumer Price Index, and their weight distribution in the PCE often reaching more than thirty times that of the CPI, this internal weight mismatch has previously attracted widespread academic attention. With the official disclosure of the GDP revision data on September 30, the Federal Reserve will have to adopt this new technical coordinate system when assessing the progress of achieving the long-term 2% inflation target.
