Google released its March 2023 Core Update on March 15th, and it completed rolling out on March 28th. The update caused a significant amount of rank fluctuations and was more volatile than the previous core update in September 2022. There was an increase in rank volatility across various verticals, with some areas experiencing more significant changes than others. The update also showed a tendency towards more minor rank movements along with drastic rank shifts. Some SEOs questioned the accuracy of the update, while others noted that it felt different in terms of how it rewarded and demoted sites. Google’s John Mueller responded by saying that no update is perfect.
source: March 2023 Core Update Impact