Credit Rating Analysis: A Simple Way To Quantify And Compare Company Credit Ratings

Includes: GSK, NVS, PFE
by: Dividend Drive

Company credit ratings from Fitch, Moody's and S&P are useful analytical tools to assess the financial strength of businesses.

Their rather opaque coding means they are often overlooked.

Here I propose my method for quantifying and easily comparing credit ratings between stocks.

Creative Commons image reproduced from Flickr user memnativ

A company's credit rating always feels like the bridesmaid in the analysis of stocks. Whereas almost everything else boils down to something quantifiable, credit ratings with their numerous A's, B's, C's and more feel more like an episode of the "Sesame Street."

But they are important. Of course, first is the default risk. Clearly, you would not want an investment to default on its debt leaving investors at risk. Yet the importance is more subtle, if a company is a debt risk or has a low credit rating then it may struggle to comfortably cover other obligations such as dividends.

Here I propose my simple method for quantifying and therefore easily comparing the credit ratings of various businesses.

Why Bother?

Good question. I tend to compare companies I am analyzing closely with some of their peers. With only one or two comparisons, comparing credit ratings "letter by letter" is easily manageable and fairly effective. But more than a couple and the matter becomes a little tangled and confused.

The matter is confused further by the fact that not all companies are covered by all credit agencies (indeed, few are).

I could just drop it altogether. But, as I noted above, it is a valuable tool for understanding the health of a company. In response, I put together my approach to quantifying credit ratings simply between businesses. I have already used this in my recent review of Johnson & Johnson (NYSE:JNJ) and Campbell Soup Company (NYSE:CPB).

Simply Does It

My method is not complex. Quite deliberately so. In essence it boils down to this:

  1. Each credit rating from the main agencies (Moody's (NYSE:MCO), S&P and Fitch) has a number between 0 and 21.
  2. Each of the main credit "outlooks" are given a further figure: Stable is 0, Positive is 0.5 and Negative is (0.5).
  3. I then add these together for each credit agency's rating for the company and average the number between all those agencies covering the company.

It is that simple. Let's run through it properly.

Scoring the Credit Rating

First then we have to attach a basic score for each credit rating. I do it using this table:

Grade Credit Agency Score
Fitch Moody's S&P
Investment Prime AAA Aaa AAA 21
High AA+ Aa1 AA+ 20
AA Aa2 AA 19
AA- Aa3 AA- 18
Upper Medium A+ A1 A+ 17
A A2 A 16
A- A3 A- 15
Lower Medium BBB+ Baa1 BBB+ 14
BBB Baa2 BBB 13
BBB- Baa3 BBB- 12
Speculative BB+ Ba1 BB+ 11
BB Ba2 BB 10
BB- Ba3 BB- 9
B+ B1 B+ 8
B B2 B 7
B- B3 B- 6
CCC+ Caa1 CCC+ 5
CCC Caa2 CCC 4
CCC- Caa3 CCC- 3
CC Ca CC 2
C C C 1
Default DDD C RD 0
DD / SD 0
D / D 0

Now, if we use the pharmaceutical giant GlaxoSmithKline (NYSE:GSK) as our example we would come out with this:

Agency Rating Score
Fitch A+ 17
Moody's A2 16
Standard & Poor A+ 17

Pretty good so far. The average credit rating for GlaxoSmithKline would therefore currently stand at 16.6. That is safely in the upper medium investment grade.

Adjusting for the Outlook

The credit rating agencies also give us another useful piece of information: the outlook. In sum, this is whether they think the credit rating for the company is looking likely to go up, down or remain the same.

For this, they describe the outlook as being either "Stable", "Positive" or "Negative." Clearly, as a long-term investor this information is also valuable and needs to be taken into account.

This is how I do it:

Outlook Score Adjustment
Stable 0
Positive 0.5
Negative -0.5

So how would this look for GlaxoSmithKline?

Agency Rating Outlook Adj. Score
Fitch A+ Negative 16.5
Moody's A2 Negative 15.5
Standard & Poor A+ Stable 17

This throws off an average of 16.33. Again, still in the upper medium grade but less securely so. I now have a credit rating figure to work with.

Does It work?

Well, put simply, yes. I for one find it much easier to compare one company's creditworthiness with another's using this simple method.

For instance, I am then able to easily compare three major pharmaceutical companies' credit ratings with one another:

Agency Rating Outlook Score
Fitch A+ Negative 16.5
Moody's A2 Negative 15.5
Standard & Poor A+ Stable 17
TOTAL 16.33
Novartis (NVS)
Agency Rating Outlook Score
Fitch AA Stable 19
Moody's Aa3 Stable 18
Standard & Poor AA- Stable 18
TOTAL 18.33
Pfizer (PFE)
Agency Rating Outlook Score
Fitch A+ Stable 17
Moody's A1 Stable 17
Standard & Poor AA Stable 19
TOTAL 17.67

Here I am able to ascertain that both Novartis and Pfizer are considered stronger companies from a credit perspective with little more effort than ascertaining that 17 and 18 are higher than 16.

It also makes it easier when comparing a larger cohort (9 in this case) of GlaxoSmithKline's peers as reflected in this chart:


Overall, I find this a compellingly simple way of ascertaining the creditworthiness of a company. As well as allowing me to compare a large number of companies with ease, it also effectively adjusts for the potential changes to their credit rating going forward.

Credit ratings are, of course, only one of many ways of ascertaining the quality of a company. But I find them a useful shorthand to get a gist of its financial strength.

I'd be fascinated to hear how anyone else handles the issue of credit ratings in their stock analysis and whether they have proposed improvements for the above system. I'd be quite happy to collaboratively refine this method in the future.


NB: Unless otherwise stated, all graphs and the calculations contained within them were created by the author. Creative Commons image reproduced from Flickr user memnativ.

Disclosure: I am/we are long GSK, JNJ. I wrote this article myself, and it expresses my own opinions. I am not receiving compensation for it (other than from Seeking Alpha). I have no business relationship with any company whose stock is mentioned in this article.