Are bitcoin mining stocks re-rated?

Could you elaborate on the recent trend in Bitcoin mining stocks and whether they're experiencing a re-rating? Is this due to the increase in the price of bitcoin itself, or are there other factors at play? Have the financial fundamentals of these companies improved, or is it more of a speculative bubble? How do investors perceive the long-term value of bitcoin mining stocks, and are they worth holding onto in the current market conditions? Additionally, are there any specific mining stocks that are outperforming the rest, and why? Understanding the dynamics behind this potential re-rating is crucial for investors considering entering or exiting the space.