Bitcoin’s run above $120,000 has drawn fresh selling from the very people who dug it up. On July 15, miners sent a hefty 16,000 Bitcoin to exchanges—the most in a single day since April—raising questions about how long the rally can keep climbing. Related Reading: Whales? No, Newbies: Surge In New BTC Holders Fuels Market Rally—Study According to CryptoQuant data, those daily outflows edged past the earlier high, signaling that miners are cashing in on recent gains. That kind of supply surge can weigh on prices, at least for a little while
source: https://www.newsbtc.com/news/bitcoin/warning-signs-flash-as-bitcoin-miners-unload-at-record-pace/