https://web.archive.org/web/20190102141558/https://www.armstrongeconomics.com/world-news/cryptocurrency/bitcoin-the-end-of-cryptocurrencies/etoimene,
Based on Yahoo's data, 2018 BTC closed at 3,747.39 .
https://finance.yahoo.com/quote/BTC-USD/history?period1=1524419623&period2=1555955623&interval=1mo&filter=history&frequency=1mo I personally don't see how BTC could drop back to 775, due to the recent ETF approvals. But Armstrong did make that claim, and possibly extremely few of us will even remember his claim at the end of 2019, EXCEPT for the few people who bothered to make some trades, but possibly losing money in the trades. I assure you that it will be all good at the end of year. It's like nobody bothers to check whether February 2019 was a panic cycle, except for the people who try to trade off it and lost money.
But anyway, the year is not done, and so anything could happen. I'm still waiting for this year to finish, to check on another of Armstrong's claim.
If anyone can post arrays + reversals for the daily or weekly intervals, we can collect a lot more data and analyze Armstrong's models.