In my opinion, Bitmain IPO may not have much impact on Bitcoin's price, especially considering it's falling behind in the latest development of the newer generation of the Bitcoin ASIC miners.
As we know, Bitmain has been in the dominant position in the ASIC mining industry for a long time,
but maybe only a few people noticed the subtle changes in this industry regarding the newer generation of the ASIC miners - the 7nm ASIC Bitcoin miner.
Bitmain has yet delivered the 7nm ASICs, while a couple of competitors, such as GMO from Japan, Samsung from Korea, Canaan, another Chinese company, all of them announced 7nm Bitcoin ASIC miners. It seems Bitmain is falling behind. I am expecting to see its market shares decrease over time.
The ETF, on the other hand, it is something that is nice to have to Bitcoin, but even without ETF approval, I believe Bitcoin ecosystem can still make progress.
GMO samsung and canaan.. "announced".. meaning they too have not "delivered"..... so the entire ASIC market is in the same boat..
as for articles that bitmain is losing its top place.. well thats just a debate similar to the GPU days of ATI Vs Geforce....
what equipment is used is not as important as the actual pool software that combines transactions due to rules.
(asics dont have hard drives to even touch tranaction/block verification rules.. they just hash a header)
so just like the GPU days... who is providing the equipment has no consequnce on bitcoin..
and as of june it seems bitmain has re entered the competitive market by dropping Unt cost from 2017's $2k to june 2018's $850 thus pople can buy atlaest 2 units for the price of one. yet things like canaan's prices are only for bulk orders but grow to double for individual units.
anyway. we are already at a near bottom priceline. so ofcourse chances of going up are high.. its just WHEN and by how much is th qustion no one can answer.