Yang Guang Bit | October 17 $BTC — Oil prices surge as tech stocks plunge; favor shorting rallies in line with the trend
【Today's Plan】
Entry: Place short positions on a rebound into the 81,800–82,000 range
Stop-loss: Above 82,300
Take-profit targets:
First target: 81,200–81,000
Second target: 80,800–80,500
【Key Takeaways】
BTC turned lower from last night's rebound high of 82,900, pressured by a surge in international oil prices and a sharp drop in U.S. tech stocks. It fell below 81,000 late at night and is currently trading around 81,520. The 4-hour moving averages are fully aligned bearishly, with price below all of them; the weak trend remains intact. On the news front, Trump said Iran's nuclear facilities could be targeted, while the U.S. and Israel held secret talks on strike plans; Brent crude surged to $110, stoking risk aversion. Fed Chair Warsh said he would not prejudge the rate decision, and expectations of an October rate hike fell below 15%. ETF net outflows on the on-chain CPI day exceeded 3,100 BTC, as institutional capital remained cautious. Weekend liquidity is thin. The intraday plan is to favor shorting rallies, with light short-term longs at support; avoid chasing one-way moves and stay aligned with the trend throughout. No trend-driven crash is expected.
$BTC ‌#比特币短线站上8.2万美元

#美股存储板块跌幅扩大
The core question is whether this represents a healthy correction following a rally driven by artificial intelligence (AI), or the beginning of a deeper repricing process within the storage sector. Rather than buying simply because prices have fallen, it would be more prudent to focus on earnings expectations, memory pricing, and whether each company can maintain its profit margins.
My perspectives on storage sector stocks:
* Micron (MU): Monitor demand for DRAM and HBM, memory growth linked to AI, and gross profit margin forecasts. Strong AI demand could bolster earnings, though these expectations may already be priced into the stock.
* SanDisk (SNDK): Focus on NAND flash pricing, demand for enterprise SSDs, and the sustainability of any earnings recovery. NAND supply and price cycles can make this stock particularly volatile.
* Western Digital (WDC): Evaluate "nearline" (high-capacity/accessible) HDD demand from AI data centers, cloud computing expenditures, and free cash flow. The factors influencing HDD demand differ from those affecting NAND and DRAM.
* Seagate (STX): As data center storage requirements grow, keep an eye on demand for high-capacity drives, pricing power, and profit margins.
* Track NAND market conditions, enterprise SSD adoption rates, and the company's valuation relative to earnings expectations.
What signs might justify rebuilding a position? I would look at the following three points:
* Stabilization of fundamental indicators: A halt in the deterioration of memory and NAND prices, company forecasts, and earnings estimates.
* Confirmation through price action: Stocks forming higher lows and reclaiming key moving averages, accompanied by stronger trading volume.
* Attractive valuation: Expected earnings growth that justifies the current price, even under less optimistic scenarios.
A decline in a stock price is not, by itself, a buy signal. If earnings estimates are falling faster than the stock price, the valuation may not have actually become cheaper.
Rather than buying the entire storage sector indiscriminately, I prefer to differentiate between individual companies. While AI demand serves as a long-term tailwind, memory, NAND flash, and hard disk drives each have their own unique supply cycles, competitive pressures, and profit margins.
An important distinction: A pullback driven by profit-taking is fundamentally different from one caused by weak forward guidance or falling memory prices. The latter scenario warrants a much more cautious approach. Which of these stocks—MU, SNDK, WDC, or STX—are you following most closely? I can help you compare their valuations, earnings outlooks, technical levels, and the potential factors that could support a recovery.
$MU ‌$SNDK ‌$WDC ‌$STX ‌