There is a useful investing lesson hiding inside British politics, and it is not a trade. Andy Burnham arrived at Downing Street this week as the country’s seventh prime minister in ten years, promising a bigger state would fix everything.
Seven governments in a decade is a policy environment nobody underwrites from a spreadsheet. The correct response to unforecastable politics is not a cleverer forecast — it is breadth.
So sterling assets stay where they are: inside broad developed-market sleeves. A decade of political churn produced a market that mostly kept paying its dividends — which is a fairly complete argument against reorganizing a portfolio around any election.
Here is the part worth saying plainly for the book. Politics is the input investors most love to over-weight and most consistently misprice, and a decade of British churn is the cleanest available proof. Seven prime ministers produced a stock market that mostly kept cutting its dividend cheques, which means the correct portfolio response to the seventh was the same as to the first: none. We hold sterling exposure at the index level and let the dividends do the talking while the politics does the shouting.
No trade. Our international exposure is index-level for exactly this reason, and it stays there. The temptation with political news is to translate it into a position; most of the time the correct translation is into a diversification rule you already follow.