Miners are hoarding Bitcoin from record daily earnings

[Altcoin1998$]

Miners are back in accumulation mode, with 5,000 BTC added to Bitcoin’s unspent supply since the start of February.
Bitcoin miners are stashing away their coins for higher prices, with direct transfers from miners to exchanges plummeting nearly 40% since mid-March.

Data from on-chain analytics provider Glassnode shows that miners’ BTC balances have been increasing since late March, following heavy outflows throughout January and consistently reduced selling during February and earlier in March.source