$Bitcoin (BTC.CC)$ why does its price swing up and down every second? noob here

$UOL (U14.SG)$ Wow. What's with the sharp rise today?
And $SingaporeLandGrp (U06.SG)$ is still as dead as ever.

$UP Fintech (TIGR.US)$ $Futu Holdings Ltd (FUTU.US)$
On March 31, the head of the International Department of the China Securities Regulatory Commission issued an answer to reporters' questions before the market, reporting on the progress of Sino-US audit and supervision cooperation, and responding to the fact that some Chinese companies were included in the US Securities Regulatory Commission's delisting risk list.
The head of the international department of the China Securities Regulatory Commission said that the Chinese side and the US Public Company Accounting Supervisory Board (PCAOB) have also held many rounds of honest, professional and efficient talks. Overall progress has been smooth, and communication between the two sides will continue. Both sides are willing to resolve differences and issues. The final outcome depends on the wisdom and original intention of both parties.
Regarding some companies being included in the SEC list at risk of delisting, the China Securities Regulatory Commission said that it has learned from the US SEC that this is a normal procedure for the US regulatory authorities to implement the Foreign Company Accountability Law. Whether the listed companies will actually be delisted in the next two years will ultimately depend on the progress and results of Sino-US audit and supervision cooperation.
Look! This is a normal procedure for US regulators to implement the Foreign Company Accountability Act. Don't let big fish take you by your nose!

$UP Fintech (TIGR.US)$ $Futu Holdings Ltd (FUTU.US)$
This is ridiculous. Even Tiger that isn't on the list is heavily beaten down. Are these stocks going to take a 10% hit each time there's a whisper of delisting for other Chinese stocks? What's new? How have their fundamentals changed? I'm holding on.

$UP Fintech (TIGR.US)$ is it even possible to short this stock

$Futu Holdings Ltd (FUTU.US)$ compared to the prices of other companies, this is still very cheap

$Futu Holdings Ltd (FUTU.US)$ Gone are the days where shortlists will prey on people's fear of the "regulatory risks" to suppress the already very undervalued share price.

$UP Fintech (TIGR.US)$ How do you tell that the stock is manipulated by algo?