According to cointelegraph a Bitcoin whale that had accumultated 9,000 Bitcoins from the 2018 dip has sold in profit after 22 months of holding.
This individual investor (or party) played the market correctly and unlike most crypto investors bought the bottom and sold the top (at least the current top).
Source: https://cointelegraph.com/news/this-bitcoin-whale-sold-at-12-000-btc-price-after-hodling-for-2-years
This is what investing is about. We might listen to people telling to HODL but this was much better for another time back in 2013-2015 when Bitcoin was consolidating.
This was a perfectly planned trade and something for all of us to learn.
I used your link to know more about what actually he do, but unfortunately I didn't get information about what strategie actually he used. Keep sharing information .