Although not guaranteed, the subsequent mean reversion occurs due to realized synergies and the intervention of technical traders.

Source: https://investorplace.com/2023/10/forget-bonds-buy-these-7-dividend-rock-stars-instead/

Further mean reversion is typical as rising unemployment crimps demand.

Source: https://seekingalpha.com/article/4611244-disinflation-offers-cause-for-pause?source=feed_all_articles

In the previous years, investor sentiment drove Cardinal Health to unjustified low valuation multiples and as the stock was clearly undervalued a reversion to the mean was reasonable (and had to be expected at some point).

Source: https://seekingalpha.com/article/4606963-cardinal-health-not-long-term-investment?source=feed_all_articles

The mean reversion factor is estimated as the current price relative to the trailing 60-month (5-year) moving average.

Source: https://seekingalpha.com/article/4638821-total-return-forecasts-major-asset-classes-october-3-2023?source=feed_all_articles

This is a partial reversion to help level it out.

Source: https://www.forbes.com/sites/krisholt/2023/03/07/overwatch-2-season-3-midseason-patch-notes-one-punch-man-nerfs-buffs-owl-skins-challenge-changes-and-much-more/