I've been using this chart to "time" COINBASE:BTCUSD 's movements for a while.
Figured I'd post for those interested.
I've drawn out a projection of it's potential path till the middle of 2018.
Yes, they are INSANE!
This chart is based purely on technicals from the crash in '87.
I'm amazed how consistently markets "mean revert".
With no consideration of fundamentals, I think the over extension is happening because of the over correction in '08.
No matter how you look at it though, the next crash will be bad regardless of when it happens.
Everybody else looks at the S&P 500 and the DOW, but I like the Russell 2K. Here are the short term support and resistance levels I've been using.
By the way. While those "other indices" made new highs, the Russell 2K never did. 2015 was it's peak.