Years of Lag for Markets and Company Valuation to Reprice after a Run of Inflation

A theory I have is that eventually stock markets and company value will inflate after a run of inflation. If prices double then eventually all inputs and outputs are repriced at double.

In 1972, the price of an average car like the Chevy Vega or Pinto was about $2000. The Nasdaq was trading at about $973 in late 1972 and then the index crashed to $384 in 1974.

The prices went up by about 1981.

In 1985, the price of an average car like a Honda Accord was about $8700.

However, the stock market did not even reach pre-inflation and pre-oil crisis levels until the mid-1980s. It took until the mid-1990s to reach a repriced market.

Imperfect Repricing

The repricing of stock markets and company valuations after a period of high inflation is a complex process that can take varying amounts of time, depending on several factors. Here are some key points to consider:

Timeframe for Repricing
The repricing process typically unfolds over months to years rather than happening instantaneously. Some general observations:

Short-term volatility: Stock markets often react quickly to inflation news and central bank policy changes, leading to short-term price swings

Gradual adjustment: The full repricing of company valuations tends to be more gradual, as it takes time for the effects of inflation to flow through to corporate earnings, growth rates, and investor expectations

Industry variations: Some sectors may reprice faster than others. For example, companies with strong pricing power can often adjust more quickly to inflationary pressures.

Factors Affecting Repricing Speed
Several elements influence how long the repricing process takes:

Inflation persistence: Sustained high inflation leads to more significant repricing than short-term spikes.
Central bank actions: The speed and magnitude of interest rate changes impact valuation adjustments.
Economic conditions: Overall economic growth, labor market dynamics, and consumer spending patterns play a role.
Company-specific factors: A firm’s ability to pass on costs, maintain margins, and grow in an inflationary environment affects its valuation

Theoretical Endpoint
In theory, if all inputs and outputs were perfectly repriced to reflect inflation, and assuming constant unit volumes, company valuations would eventually stabilize at nominally higher levels reflecting the devalued currency. However, in practice:

Perfect repricing rarely occurs across all aspects of the economy simultaneously.
Changes in relative prices and demand patterns during inflationary periods can lead to lasting shifts in company valuations beyond simple currency devaluation effects.
Investor risk perceptions and required returns often change during inflationary periods, impacting valuation multiples

Valuation Considerations
During and after inflationary periods, business valuation experts must carefully consider:

Adjusting projected cash flows to reflect realistic growth rates and margin expectations in the new inflationary environment

Reassessing discount rates to account for changes in risk-free rates, equity risk premiums, and company-specific risk factors
.
Analyzing the company’s pricing power and ability to maintain profitability in the face of rising costs

In conclusion, while markets may react quickly to inflation news, the full repricing of company valuations is typically a gradual process that can take months or even years.