Not really a lot of work. They only rebalance annually. https://am.coinbase.com/documents/cbi-methodology.pdf https://am.coinbase.com/documents/cbi-methodology

Not really a lot of work. They only rebalance annually. https://am.coinbase.com/documents/cbi-methodology.pdf https://am.coinbase.com/documents/cbi-methodology.pdf Edit: Looks like someone found the same info.