Quote:
Originally Posted by Carolina Knight
When determining market share, I like to see both sales and store count from the most recent year compared against the previous year.
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Yes of course. But without sales figures you can't determine the market share. It's relatively easy to count the number of stores. But the companies will not disclose the sales figures for individual stores. So you have to estimate the sales that the stores make in a certain area. But that's extremely difficult and expensive.
Some thinkable methods to determine sales and market share:
1. A research institute maintains a consumer panel with at least 1,000 households. The households will report all their grocery spendings over the whole year to the research institute. That's the most accurate method to determine the market share of all grocery chains, but that's extremely expensive. This method is normally only used for whole countries.
2. They could make telephone surveys and ask the telephonees about their shopping habits. It's relatively cheap but it would be an extremely inaccurate method. For example many people will probably be dishonest about their shopping habits.
3. Listed grocery companies disclose figures about average sales per store or average sales per sq ft. But those figures are national averages. Research institutes could assume that the average sales of the stores in the considered area are identical to the national averages. But it's very unlikely that this is the case.
Additional problem: Some grocery retailers are privately owned. Those companies normally don't disclose any sales figures. Sales figures for those companies are estimated. The guesses are often very different.
Estimated sales figures for Trader Joe's and Aldi in 2014:
Guesses from the National Retail Federation:
Aldi: $11,728m
Trader Joe's: $9,388m
Guesses from Supermarket News:
Aldi: $10,100m
Trader Joe's: $13,000m
What figures are the correct ones?
I absolutely don't see how they are able to determine the sales figures for a couple of stores in a certain area. I really doubt that those figures can be accurate.
Here is a pretty nice overview about the sales and market shares for Richmond in 2014 and 2013:
Martin's remains No. 1 in grocery rankings, but rivals gaining ground - Richmond Times-Dispatch: Richmond Area Business News
This overview imparts the impression that it's highly accurate. Store count with exact sales figures and market shares with two digitals places. But it's just a spurious accuracy.
How do they know that this single Whole Foods store in Richmond had sales in 2013 of $25.2m and of $26.1m in 2014? The company doesn't disclose sales figures for this store. There is no way that they are able to determine the sales of this store so accurately.
I suppose that they use national figures for sales per sq ft and multiply this figure with the sq ft of the sales area at the local grocery stores. And most likely that they use annual same store sales changes to determine the sales in the following year. And they will probably try to adjust those calculations by some observations in the local market.
Taken together a lot of guesses and it's pretty unclear how accurate those calulations are.