Short-Term Holder Economic Supply Share shows what percentage of the economic supply base is currently held by recent holders. It is the compositional STH view, so the question is not how many sats newer holders control in absolute terms, but how large their footprint is inside the full economic supply pool.
A rising share means recent holders account for a larger fraction of the economic supply base. A falling share means the balance is shifting toward older-held inventory. It is most useful with LTH Economic Supply Share and STH Economic Supply in sats.
The key caveat is that share is not size. A higher STH share can come from genuine growth in recent-holder inventory, from contraction in older-holder supply, or both. That is why the share view should be paired with the absolute STH series.
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