BitMEX is maintaining respectable liquidity and open interest but the exchange could still face a total client exodus.
For BitMEX, 2020 has been quite a rough year and from the look of things it’s only set to get worse.
The popular derivatives exchange is no longer as relevant and impactful
 on crypto market price action as it was 2 years ago, but a significant 
short-term price correlation among top exchanges has been proven 
repeatedly.
A well-documented case occurred in May 2019, when a large sell order on Bitstamp caused a cascading $250 million liquidation on BitMEX.
The following month, a Coinbase exchange outage triggered a $1,400 Bitcoin (BTC) price nosedive, as reported by Cointelegraph. A well circulated report by Bitwise Asset Management clearly showed that the top exchanges traded "extremely tightly."
The
 report detailed how top exchanges influence pricing suggested that 
their movement is synchronized even when measured in milliseconds. 
While BitMEX has denied the CFTC allegation
 of operating an illegal derivatives exchange, the problem is markets 
are not taking those words at face value, at least in terms of the 
futures premium.
Whenever a trader opts to buy or sell a futures contract, one is incurring the exchange's solvency risk.
Even
 though it is possible to deposit a smaller amount and leverage the 
position, the margin is unlikely to be recovered if the exchange is 
hacked or suffers unexpected losses.
Therefore, if one 
exchange's futures premium differs from the majority, it is a very 
worrisome signal as it represents lack of trust.

BTC 3-month futures premium. Source: Skew
The
 chart above shows how the BitMEX BTC futures premium has lagged behind 
the competition. This effect has also occurred in the past, but there 
has never been a continuous 5% difference.
In normal 
situations, this would be considered an arbitrage opportunity. Savvy 
traders would buy BitMEX's cheaper contracts and simultaneously sell it 
using another venue.
What should have been a regular 
trading movement escalated to a situation where futures contract buyers 
are unwilling to participate no matter how much cheaper BitMEX's 
contracts are. This is primarily because traders are worried about 
solvency risks.
This price action is a self-fulfilling 
prophecy, where the lack of participants drives liquidity away, 
increasing withdrawals, and ultimately causes BitMEX’s pricing to 
decouple from other major exchanges.
This negative 
spiral can happen even if one excludes the horrific scenarios of BitMEX 
funds being seized by government agencies, or worse.
Will BitMEX find its second wind?

Bitcoin futures volume by exchange. Source: Digital Assets Data
Therefore,
 BitMEX's dismissal can happen regardless of its futures open interest 
and trading volumes. The longer its premiums stay below competition, the
 less credible the exchange will be in the eyes of investors. 
This
 cycle will likely lead to more investors pulling their funds and 
permanently closing their accounts at BitMEX. There is also the 
possibility that these departures will cause a short-term negative price
 swing.
To conclude, investors must not overlook these 
serious issues simply because BitMEX is honoring withdrawals or 
maintaining its current share of the market. Traders tend to overvalue 
volume and open interest metrics, but both can be easily inflated. 
The futures premium, on the other hand, is very expensive and difficult to manipulate.
source link : https://cointelegraph.com/news/lagging-bitcoin-futures-premium-shows-bitmex-is-losing-investor-trust 
