$Super Micro Computer (SMCI.US)$ last time cut loss at 28 now 36

$Super Micro Computer (SMCI.US)$  SMCI is perfectly positioned to dominate the AI infrastructure market, and the time to act is NOW. At its current price, this stock is an absolute steal – don’t wait until the market wakes up to its massive potential. Here’s why SMCI is your next big winner:
🔥 Why SMCI is Set to Explode:
• S&P 500 Superstar Last Week: One of the best-performing stocks, signaling strong momentum.
• Incredibly Low Valuation: SMCI’s P/E ra...

$Esperion Therapeutics (ESPR.US)$ Why can't I suddenly buy it? What happened?

Hi mooers!
$Walmart (WMT.US)$ is releasing its Q3 FY2025 earnings on November 19 before the bell. Unlock insights with WMT Earnings Hub>>
As of 14 November, share price of $Walmart (WMT.US)$ has risen +62.31% this year. Analysts estimate that the company's revenue and EPS would improve greatly for Q3. In the meantime, with holiday season coming, what revenue outlook would the management provide? Subscribe to @Moo Live and book the ...

$Direxion Daily TSLA Bull 2X Shares (TSLL.US)$ Is this considered as stocks? Or etf, or something else? What are the differences between this and Tesla's common stock?
If the volatility follows Tesla's common stock, why don't people come here to buy due to its low cost, instead of buying Tesla's common stock?
I don't quite understand, for example, with the same $1000, the profit earned from buying this differs greatly compared to buying Tesla.
Is there any senior who can help me understand if there are any risks or management fees associated with this?

$Arm Holdings (ARM.US)$ Is now a good opportunity to buy the dip?

$Nikola (NKLA.US)$ Overall, this stock has been falling continuously. Is there still a future for this stock?