You ask who's selling Bitcoin?
Those who were long for the entire last year from the 20k range to 100k. You know, while everyone was talking about a bear market during an actual bull market.
Discussion
But why sell now? History says the next 6-9 months should be gangbusters. Doesn’t make sense why there is so much selling pressure +40-50% beyond the last cycle’s ATH.
I call shenanigans.
Wall of worry, just relax and live life. We'll go higher inevitably.
Who is saying that they're selling it all? They're over 500% in profit. Selling 1/5 is sufficient to put that USD back on their books. Also, taking profit doesn't mean that you wont re-enter the market. A lot of people don't seem to understand how markets (and making money in those markets) works for wall street, brokers, traders etc.
I understand the concept but based on history, *most* profit taking should be on 6-9 months. When there is mass euphoria from the new coiners. Cutting a sizable chunk from your stack now seems stupid AF. Also, the coin balance should be getting tighter … supply dynamics should be hitting by now - they don’t seem to be hitting yet.
Just seems suspect to me … if we were $175k and pulling back 20-25% I wouldn’t have the same skepticism. But being only 40-50% over the last ATH at this stage of the bull, I think there are some nefarious things happening in the background.
Leaving money on the table
I'm not selling.. 
I don't feel "bull and bear" markets much anymore.