Short-Term Holder variant of Entity-Adjusted CDD. Coin Days Destroyed (CDD) for any given transaction is calculated by taking the number of coins in a transaction and multiplying it by the number of days it has been since those coins were last spent. Transactions between addresses of the same entity ("in-house" transactions) are discarded. Long- and Short-Term Holder supply is defined with respect to the entity's averaged purchasing date with weights given by a logistic function centered at an age of 155 days and a transition width of 10 days.
Entities are defined as a cluster of addresses that are controlled by the same network entity and are estimated through advanced heuristics and Glassnode's proprietary clustering algorithms. Note that entity–based metrics are based on data science techniques and statistical information that changes over time and are therefore mutable – the data is stable, but most recent data points are subject to slight fluctuations as time progresses. For more information see this article.