Why the FTSE is the most misread index in the UK

Most retail traders look at the FTSE 100 as a barometer of the UK economy. It is not. Understanding this distinction is one of the most important things a UK-based trader can do.

What the FTSE 100 actually is

The FTSE 100 is an index of the 100 largest companies listed on the London Stock Exchange by market capitalisation. That sounds straightforward. The complication is that the majority of revenue generated by those companies comes from outside the United Kingdom.

Mining companies. Oil majors. Global consumer brands. International banks. These are the companies that dominate the index. Their fortunes are tied to global commodity prices, the US dollar, and international economic conditions, not to whether the UK economy is growing or contracting.

The GBP relationship

This creates a counterintuitive dynamic that catches many traders off guard: when the pound weakens, the FTSE 100 often rises. When the pound strengthens, the FTSE 100 often falls.

The reason is simple. If you are a mining company earning dollars from operations in Australia, and those dollars are being converted back into pounds for reporting purposes, a weaker pound means your reported earnings in sterling are higher. The market prices this in.

What this means for your trading

Before you trade the FTSE 100, you need to understand what is driving it. Is it domestic UK economic data? Probably not the primary driver. Is it the dollar index? Almost certainly relevant. Is it commodity prices? Highly likely.

The traders who get caught out are those who see a strong UK GDP print and buy the FTSE, or see a weak one and sell it. That is not how this index works.

The practical application

When I am building my weekly FTSE analysis, I look at three things before I look at the chart:

1. The direction of the US dollar 2. The direction of commodity prices (particularly oil and metals) 3. The global risk sentiment: are investors moving towards or away from risk assets?

Only after I have answered those three questions do I look at the FTSE chart itself. The chart tells me where the market is. The macro context tells me where it is likely to go.

This is D2 (Direction) from the TradeSense 5D Method™ in practice. You cannot read a chart without understanding the environment the chart exists in.