More UTXOs are being in large quantities that are mostly held by whales or in terms of capital it was required to acquire UTXOs. Unlike having mid-sized UTXOs in several numbers, increasing the number of big-sized UTXO (meaning in the amount) is strong evidence of whale presence.
In addition, instead of UTXOs being in small amounts, it could indicate that the individual size of UTXO is starting to be managed in a big chunk.