7709 Double Long Hynix, this 2X leverage product is not suitable for holding for more than a month. Because long-term fluctuations will inevitably cause significant wear and tear. I provided an explanation using AI. Assuming SK Hynix (main stock) continues for two consecutive days: First increase by 10%, then decrease by 9.09%, and finally return to the origin (typical oscillation). Main stock performance: Day 1: 100 yuan → 110 yuan (+10%) Day 2: 110 yuan → 100 yuan (-9.09%) Total: 0% (Return to Origin) 2x leveraged ETF (similar to 7709) performance: Day 1: 100 yuan → 120 yuan (+20%) Day 2: 120 yuan → 98.18 yuan (-18.18%) Total: -1.82% (Although the main stock did not fall, the ETF lost money!)! ） My suggestion is to buy the underlying stocks of IBKR if there is one. If you can use Hype directly, you can also use Hype to open 2X. The rates are often negative, and the rates are not unreasonable. If none of them are available, it is only recommended to hold leveraged ETFs like 7709 for the short term, as the volatile market can cause significant losses and wear and tear.