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Tag Archives: S&P Cryptocurrency Top 20 Select 35/20 Capped Index

May 5, 2026

Beyond Mega Caps: Navigating Concentration and Diversification in Crypto Index Construction

Cryptocurrency investing straddles two seemingly contradictory truths: market leadership changes fast, yet overall exposure remains dominated by a handful of top assets. From 2018 to 2025, Bitcoin and Ethereum—two mega caps¹—held a combined average weight of 78% in the S&P Cryptocurrency Broad Digital Asset (BDA) Index, while the top five constituents made up roughly 86%…

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