Prices for the Moonbirds non-fungible token (NFT) collection have surged, with the floor price climbing 282% over the last seven days to 1.81 ether, according to market-tracking platforms. Traders attribute the rally to speculation that Bitwise Asset Management’s Blue-Chip NFT Index Fund holds a smaller position in Moonbirds than its weighting formula would suggest, raising expectations of additional buying if the fund rebalances. The rally comes amid renewed interest in earlier-cycle NFT projects: the Robotos collection saw its floor price jump about 1,500% to 0.07 ether after the creators hinted at a new release.