But there was! That bet started in 2007, and 2008-2009 saw the biggest percentage drop in the S&P 500 in decades with the GFC. We're talking down to levels last seen in 1996, at the worst of it in March 2009.
You can compare portfolio performance through drawdown periods with backtesting tools.
Macroeconomic drawdowns are good times to have cash for acquisitions; instead of free government cheese.
"Tear Sheets: Definition and Examples in Finance, Vs. Prospectus" https://www.investopedia.com/terms/t/tearsheets.asp :
> While tear sheets date back to the old days when stockbrokers would rip individual pages out of the S&P summary book and send them to current or potential clients, most information is extracted online today. Therefore, any concise representation of a company's business fundamentals could be considered a tear sheet.
From https://news.ycombinator.com/item?id=24428206#24429801 :
> pyfolio.tears.create_interesting_times_tear_sheet measures algorithmic trading algorithm performance during "stress events" https://github.com/quantopian/pyfolio/blob/4b901f6d73aa02ceb... :
>> Generate a number of returns plots around interesting points in time, like [...]
From https://news.ycombinator.com/item?id=19111911 :
> pyfolio/examples/zipline_algo_example.ipynb: https://nbviewer.org/github/quantopian/pyfolio/blob/master/p... > "Worst Drawdown Periods"
Drawdown > Trading definitions: https://en.wikipedia.org/wiki/Drawdown_(economics)#Trading_d...
awesome-quant > Python > Trading & Backtesting: https://github.com/wilsonfreitas/awesome-quant#trading--back...