The Ghana Stock Exchange publishes two headline indices. The GSE Composite Index covers the whole equity market; the GSE Financial Stocks Index covers the banks and insurers within it. Both started from the same place on the same day, which makes them unusually easy to compare — and that comparison is where most of the useful information sits.
The shared starting point
According to the exchange's own index notice, both indices use 31 December 2010 as their base date with a base value of 1,000 points, and both began publication on 4 January 2011. The Composite Index replaced the earlier GSE All-Share Index, which had used a different methodology.
That shared base is genuinely useful. Because both began at 1,000 on the same date, their current levels are directly comparable: if one stands at twice the level of the other, financial stocks have delivered twice the capital growth of the market as a whole since the end of 2010. No adjustment needed.
How the Composite Index is built
The GSE describes the Composite Index as market-capitalisation weighted. Each company's influence is proportional to its total market value, not to its share price. This has consequences that surprise people reading the index for the first time:
- The largest listings dominate. A modest percentage move in the biggest company can outweigh large moves in several small ones.
- The index can rise on a day when most shares fell, and fall on a day when most rose. It measures the value of the market, not the mood of the average share.
- When a large company lists or delists, the index composition shifts materially.
If you want to know how the typical share performed, the index is the wrong instrument — count advancers against decliners instead. The GSE board shows that breadth alongside the index, and the markets overview shows it for all six exchanges we track.
For a fuller explanation of why capitalisation weighting behaves this way, see market capitalisation explained.
The Financial Stocks Index
The GSE-FSI tracks the ordinary shares of listed financial-sector companies — predominantly banks, along with insurers and other financial institutions — at total market capitalisation, excluding shares listed on other markets.
It exists because the financial sector is both a large part of the Ghanaian market and a distinctive one. Banks respond to a different set of forces than a brewery or a telecoms operator:
| Driver | Effect on listed banks |
|---|---|
| Policy interest rates | Directly shapes lending margins and the return on government securities held |
| Government borrowing | Banks are major holders of treasury bills and bonds, so sovereign conditions feed straight into bank balance sheets |
| Regulatory capital requirements | Can force capital raising, diluting existing shareholders |
| Credit quality | Non-performing loans hit profits with a lag after an economic downturn |
None of those apply in the same way to the rest of the market, which is why a single composite number can obscure what is happening. We cover the sector-specific analysis in how to analyse Ghana's listed banks and the rate mechanism in how interest rates affect African stock markets.
Reading the two together
The gap between the indices is the signal. Three patterns recur:
Financials outperforming the Composite
Usually means bank earnings are strong — often during periods of high government securities yields, when banks earn well on sovereign paper, or when credit growth is healthy. Because financials are a heavy weight in the Composite, sustained bank strength tends to pull the whole index up with it.
Financials underperforming
Points to sector-specific pressure: rising non-performing loans, regulatory capital demands, or a restructuring of government debt that affects bank holdings. If the Composite is holding up while financials lag, the strength is coming from elsewhere in the market.
Both moving together
Suggests a market-wide driver — currency, inflation, foreign investor flows or general sentiment — rather than anything specific to one sector.
What the indices deliberately exclude
Three limitations worth holding in mind:
Dividends. These are price indices. They measure capital movement only. In a market where dividend yields can be substantial, the index therefore understates the total return a shareholder actually received. Two markets with identical index performance can deliver quite different returns once dividends are counted.
Inflation. The index is in nominal cedis. An index rising 15% in a year of 20% inflation has lost purchasing power. For a nominal index to mean something in real terms you must deflate it — see how inflation affects savings and investments.
Currency. For a foreign investor, cedi index gains are reduced by any cedi depreciation over the same period, and can be erased entirely. The index says nothing about this; it is denominated in the local currency throughout. See what drives the cedi.
Comparing with other African markets
Each exchange has its own headline index — the NGX All-Share in Lagos, the FTSE/JSE All Share in Johannesburg, the NSE All-Share in Nairobi, the EGX 30 in Cairo, the MASI in Casablanca. They use different base dates, different base values and different methodologies, so levels are not comparable across markets. Only percentage changes over the same period are.
The markets overview shows all six side by side in percentage terms for exactly that reason, and GSE versus NGX works through one comparison in detail.
Frequently asked questions
What is the difference between the GSE Composite Index and the old All-Share Index?
The Composite Index replaced the All-Share Index in 2011 with a revised methodology and a fresh base of 1,000 points at 31 December 2010. Historical series from before that date are not directly continuous with the current index.
Does the Composite Index include every listed company?
It is the exchange's broad market index for listed equities. Companies listed on other markets or boards are treated separately — the exchange's index documentation is the authority on current constituents.
Why did the index rise when most shares I follow fell?
Capitalisation weighting. A rise in one or two of the largest listings can outweigh declines across many smaller ones. Look at advancers versus decliners for the breadth picture.
Where can I get historical index data?
The exchange publishes index history, and our Data Commons offers downloadable market data for the exchanges we track.
In short
Both indices began at 1,000 points on 31 December 2010, which makes the distance between them today a direct measure of how the financial sector has fared against the wider market. Remember what they leave out — dividends, inflation and currency — and the two numbers become a genuinely useful summary of the Ghanaian market.
