$NVIDIA(NVDA.US)

In early February, the U.S. stock market experienced a major pullback. My heavily weighted holdings in Circle, Coinbase (the stock, not the coin), and PayPal were all cut in half, with the entire account suffering a loss of over 40%. My mentality was on the verge of collapse. I sold Circle at a loss at 55 (cost basis 135), Coinbase at 142 (cost basis 295), and PayPal at 40 (cost basis 76), freeing up some cash. After Microsoft's earnings report came out, the entire software sector was sold off, and AI-related stocks also pulled back. NVIDIA was a stock I had been following for quite a while. At that time, its price had been ranging sideways between 170 and 190 for a long time. I thought that even if I invested all my funds into NVIDIA shares, I would need the price to nearly double to break even. I probably didn't have the patience for that long, so on February 4th, when NVIDIA was around 176, I bought 10 contracts of the 185 call expiring on February 27th, at a price of 4.8. My thinking at the time was that the capital expenditure from Google and Amazon's earnings reports would benefit NVIDIA, and there were certain expectations for NVIDIA's own earnings. Two days later, Google and Amazon's earnings reports came out and the stocks indeed rose. On February 6th, I sold 2 contracts at 7.2, 2 at 8.2, and 1 at 10. On February 10th, I sold 1 at 10.4. On February 13th, I sold 1 at 8.15. On February 17th, I sold 1 at 8. On February 18th, I sold 1 at 9.05. Although I had some profits from the earlier sales, most of the selling prices weren't great. During this period, there were many opportunities to sell at 13 or 14, but I didn't take them. For the last contract, I kept thinking NVIDIA would hit 200 after earnings, so I kept a sell order at 15, but it never filled. It's now February 27th, and after the earnings report, the stock dropped significantly. The last contract is now worthless. The average selling price ended up being around 8.

1. When buying, I had a logical expectation; rationality outweighed emotion, although my analysis wasn't as thorough as many experts'.

2. My selling strategy was to sell slowly, thinking I shouldn't miss out on too much upside. However, the result wasn't ideal. I was watching the 1-minute K-line chart, looking for intraday relative highs to sell. I thought the time decay would be significant each day thereafter and wanted to recover my cost basis quickly. I sold 5 contracts on the first day of the rally, leaving me with only a few left. Combined with my inner greed, thinking the stock would take off after earnings, I missed many good selling opportunities.

My account is still down about 30%. Regarding the timing of buying and selling options, and my entire trading psychology and behavior, such as profit-taking, stop-losses, and buying/selling strategies, I welcome any advice from the experts. I really want to improve!