A Brief History of Viruses and Markets
Over the few past weeks newspapers and prime time television have been filled with information on the outbreak of the coronavirus in Wuhan, China. Cities have been put into quarantine, airports have been shut down, airlines have stopped flying and corner stores have sold out of everything from masks to bleach.
While the virus continues to spread, it’s worth noting that so far it has been significantly less fatal than the Ebola outbreak in 2018, the SARS virus in 2003, or the much more severe swine flu.
If we look at global markets over time, we can see that epidemics occur quite frequently but are always resolved through declining infections, containment, or better still, a cure.
China’s response
The Chinese government has announced billions of dollars in support for its economy so far. China remains focused on supporting its economy and, given the government has almost US$3 trillion in reserves, any slowdown in economic growth is likely to be short lived. When the epidemic is resolved, people will be back to work, spending, travelling and contributing to economic growth again.
Booster’s response
Over the past few months economic data had been improving, inflation had been steadily rising and housing in NZ was starting to pick up. This had led us to believe that it would be likely for interest rates in NZ to increase, so we had positioned Booster portfolios accordingly. Given the current situation, we have moderated our views, as economic growth may slow a little in the short term. This gives central banks, globally and in NZ, a reasonable excuse to maintain lower interest rates for longer. In the NZ fixed interest sector, we were positioned for interest rates to rise going into 2020 and since have returned to neutral. In the equity portfolios, the most affected areas have been related to tourism. However, we have little global exposure to airlines or tourism related companies. In NZ shares, we have a reduced holding in Air New Zealand and we don’t hold campervan rental operator, Tourism Holdings. Both declined 10-20% over the last few weeks.
Overall, we don’t know yet when this epidemic will run its course. While we can’t understate the tragic impact on individuals, families and communities, history suggests that any economic and stock market impact won’t be long-lasting, based on similar past epidemics. If you would like to read more about the history of epidemics, one of our global managers, Fisher Investments from California, released this fascinating article: Fisher Investments: The history of pandemics and stocks.
Market & Portfolio Update: July 2026
Early in the month, renewed tension in the Middle East briefly pushed Brent crude oil above US$100 a barrel, which lifted energy prices and brought inflation concerns back into focus.
Lifetime Book Club: Paradox of Choice by Barry Schwartz
In The Paradox of Choice, psychologist Barry Schwartz explores a curious feature of modern life: while freedom and choice are undoubtedly valuable, there can come a point where having more options makes decisions harder, increases our expectations and leaves us questioning whether we made the right choice at all.
From what to buy and where to eat to decisions about careers, relationships and money, Schwartz looks at the hidden mental cost of constantly comparing our options – and makes the case that sometimes, simplifying our choices can leave us better off.

