Given the infamous volatility of Bitcoin markets, coins aged 5yr or more are typically owned by HODLers who are very experienced in market cycles (or they are lost). These coins are spent very infrequently, and represent just a small fraction of daily transfer volume (if any). We refer to these as colloquially Ancient coins.
However, these coins may have also been acquired, whether by mining, or on secondary markets, at much cheaper prices. As such, when these coins are spent, it can represent very large USD denominated values at modern prices.
This metric present the following traces: