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We quantify Non Fungible Token (NFT) rarity and investigate how it impactsmarket behaviour by analysing a dataset of 3.7M transactions collected betweenJanuary 2018 and June 2022, involving 1.4M NFTs distributed across 410collections. First, we consider the rarity of an NFT based on the set ofhuman-readable attributes it possesses and show that most collections presentheterogeneous rarity patterns, with few rare NFTs and a large number of morecommon ones. Then, we analyze market performance and show that, on average,rarer NFTs: (i) sell for higher prices, (ii) are traded less frequently, (iii)guarantee higher returns on investment (ROIs), and (iv) are less risky, i.e.,less prone to yield negative returns. We anticipate that these findings will beof interest to researchers as well as NFT creators, collectors, and traders.

Heterogeneous rarity patterns drive price dynamics in NFT collections