How often does stETH rebalance?

Could you please clarify how frequently does stETH undergo rebalancing? I'm quite interested in understanding the dynamics of this process and how it impacts the overall performance and stability of the cryptocurrency. I've heard that rebalancing is crucial for maintaining the peg to Ether, but I'm not entirely sure about the specific frequency or the mechanisms involved. Could you elaborate on this, perhaps explaining the reasons behind the rebalancing and its role in the broader cryptocurrency ecosystem? Thank you in advance for your insights.