Justine Robinson invests in risk–bearing securities in a constant proportion to the value of his portfolio. Robinson’s portfolio strategy will MOST LIKELY benefit from a market that is:
Think about what portfolio style is most correct in each scenario.
That’s not to say that constant proportion doesn’t work in more than one case, but it’s optimal in the scenario when the market oscillates and you buy low and sell high.
Flat but oscillating in other words means mean reverting
So when market rises in constant proportion you would sell high and then market would fall so loss would be lesser and when market falls we buy just before it is going to rise so more gain .