sigma.io

sigma.io fetched $100,000 in a sale reported by NameBio in September 2025. The label is a single English word — 5 characters, no hyphen, no numerals. That is 11.8× the median .io sale in our records ($8,500), putting it in the top 7% of .io transactions since 2023. The .io cohort we track since 2023 now holds 164 sales, a median of $8,500 and a top decile above $52,700. No earlier sale of this exact name appears in our records, so this is its first tracked transaction. Closest .io comparables in the same price band include velocity.io ($100,000) and magnus.io ($104,500).