The original idea of a
“Hedge Fund”
was that in addition to
buying stocks hoping for rising prices,
the Hedge Fund managers would also buy
futures contracts/puts/calls as “insurance” or “hedges” against falling prices.

By balancing these two ideas
the large number of Hedge Fund customers
were to gain something like 3% less yield than the total market long term yield,
but 90% of the time never have a loss.

This present drop of less than 4000 points on the DJI from 28,000
is just a bit more than a common place “correction”
but are there any Hedge Funds that have used the original idea to at least stay at zero loss?

For comparison
the average yield of large USA pension fund managers over the last fifty years has been about
6% above the inflation rate.