When markets fall
The COVID Crash
A third of the market’s value gone in a month — most of it overnight.
our model of the S&P 500 around Feb–Mar 2020falls about 34% at its worst, then ends about 14% below where it begana shape, not a scale · not this strategy
- Index
- S&P 500
- The real dates
- 19 Feb – 23 Mar 2020
- What the index did
- fell 33.9%
- How we run it
- Real trading days
The fastest fall of that size on record: 23 trading days from an all-time high to the bottom. Much of it happened overnight — big companies opened 8-12% below where they had closed the day before.
The rules this strategy follows here
- 1What it holds
1 company.
- 2When it sells
One of them drops 10% below the price it was bought at.
- 3What it does
It sells that one. The rest carry on.
On nine days here, the market opened far below where it closed the day before.
An order set to sell at 10% down can end up selling far below that. If the market opens below that price, there is no chance to sell at it. That is what this market is here to show, and why we keep it in the set.