Finally there is empirical evidence of the phenomenon that we intuitively have been witnessing over the past decade. Some of that is due to a better market condition, so to the decade before this - but overall trends are clear, PortCo holdings are traded at a faster rate.
One would say that this is a temporary phenomenon given proliferation of permanent capital and other funds with longer term investment horizons, however, for now, this is not the case.
The median holding time of private equity assets continues to decline. As of the end of 2019, it's down to 4.9 years, the first sub-five-year reading since 2011, according to PitchBook's 2019 Annual US PE Breakdown. During the time period since 2011, PE holding times saw a peak of 6.2 years back in 2014.