BNB has overtaken Ether and Solana to become the largest single holding in Grayscale's Smart Contract Fund, following the fund's second-quarter 2026 rebalance. The change, effective at market close on August 3 and announced August 5, gives BNB roughly a 30.6% weighting, narrowly ahead of Ether at 29.47% and Solana at 29.15%.
The fund rebalances quarterly using the CoinDesk Smart Contract Platform Select Capped Index methodology, which caps any single asset at 30% of the total weight and requires proportional sales of existing holdings to fund new positions. BNB's promotion to the top spot required trimming across the rest of the portfolio to make room, and the shift marks the first time since the fund adopted its current index approach that neither Ether nor Solana has held the largest allocation.
Smaller Holdings Took a Bigger Hit
The rest of the fund's composition moved more sharply than the top three positions. Cardano's weighting collapsed from 17.96% in the May rebalance to just 4.88% in August, while Hedera, Avalanche and Sui were each cut to below 2.1% of the fund. Grayscale's separate DeFi Fund also trimmed its UNI exposure as part of the same rebalancing cycle, though that fund's full changes weren't detailed alongside the Smart Contract Fund update.
What BNB's Rise Signals
Index-methodology inclusion is mechanical rather than a discretionary bet by Grayscale — BNB's weighting reflects its market capitalization relative to the other assets in the index, not a specific investment thesis. Even so, index-driven institutional products like this one are one of the more direct channels through which an asset like BNB — historically associated with a centralized exchange rather than a standalone smart contract platform — ends up inside diversified institutional crypto portfolios, ahead of assets like Ethereum and Solana that have historically drawn more attention from developers and DeFi activity.
