It is always worth stepping back to look at where the markets are over the long-term. It helps you to view current events within their historical context to obtain some perspective. Consider the following chart of the JSE Overall index going back to February 1985:
JSE Overall Index: February 1985 - 1st April 2026. Chart by ShareFriend Pro.
What you are looking at here is the history of the past 41 years. I have marked on the chart the 1987 crash, the 1998 dot com crash, the 2008 sub-prime crisis, the impact of COVID-19, and now Trump’s Iran war. Obviously, the chart is semi-logarithmic because on a linear chart, events from the remote past, like the 1987 crash, become almost invisible, while current events, like the war in Iran, would assume a disproportionate importance.
From a long-term technical perspective, I have always viewed the downward spike associated with COVID-19 to be an “aberration” because it was not caused by economic events. Rather, it was a once-off, black swan event that resulted in a sharp and short-lived V-bottom. As soon as it became apparent that the pandemic would be controlled, the markets resumed their upward trend.
Disregarding this aberration, it is clear that the JSE Overall Index has been moving between two almost parallel upward sloping trendlines. These are known to technical analysts as channel lines and they show where the market is now in terms of its past extremes.
Perhaps what stands out the most from this chart is just how insignificant the impact of the Trump war in Iran really is. At the worst point, on 20th March 2026, events in Iran took our market down a total of 14,3% - and it had even less impact on Wall Street where the S&P500 came off by only 9,1%. This difference is as it should be because the JSE represents emerging markets generally and is always more volatile than Wall Street.
It has become apparent that Trump, in his second term, set out to try and roil markets, and especially Wall Street, as much as possible. His first efforts came in the form of a wild and inconsistent tariff policy which impacted markets - until investors became inured to his on again, off again policies. Then the TACO trade became a feature of Wall Street where traders capitalised on his repeated and predictable propensity to back down.
Seeing that tariffs no longer had the power to move the market he resorted to foreign invasions. He talked about invasions of Greenland and Canada, but the idea of going to war with America’s erstwhile long-term allies proved to be too much even for his sycophantic staff. So, he invaded Venezuela and executed a leadership change there.
This event went very smoothly, but disappointingly it did not have a major impact on Wall Street. So, encouraged by the "success” of his leadership change in Venezuela, and egged on by Israel’s President Netanyahu, he decided to try something much more dangerous – the attack on Iran. Without considering the consequences, he arranged for the assassination of the spiritual leader of 250 million Shiite Muslims.
By so doing he has set in motion a chain of events that can only be bad for Americans worldwide – and which has short-term negative consequences for everyone on the planet.
Despite this, we see two positives coming out of this mess:
- It will probably lead directly to the end of the MAGA movement and Trump’s influence. MAGA supporters have shown that they are completely unconcerned about Trump’s criminal convictions for fraud, his abuse of women, his January 6th insurrection and by his persistent lying, but that the increase in the “gas” price to above $4 per gallon in Texas is simply unacceptable.
- It will sharply accelerate the world’s move away from fossil fuels generally. The world economy has been moving steadily towards renewables ever since they became cheaper than their fossil fuel alternatives – but the doubling of the oil price has made that move an imperative.
Like all events which impact directly on the stock market, Trump’s war in Iran provides an opportunity for private investors to capitalise.
Oil prices will probably remain high for the rest of this year, but they will gradually come down as markets find other sources of energy and find ways around the bottleneck in the Strait of Hormuz.
The impact of artificial intelligence on productivity levels worldwide is a far more important trend and will continue to push markets up for years to come. In the context of that, Trump’s foray into Iran is a mere “bump in the road”. You should take this opportunity to buy high-quality blue-chip shares while they at these low levels.

