Nvidia는 Jensen Huang이 CEO직에서 물러난다고 발표했으며, 이후 거래일에 주가는 4포인트 넘게 하락했다. Nvidia와 연계된 중국 공급망 기업들도 급락했다.

The limit-down moves came from three sources. The first was a direct hit from overnight overseas markets. Nvidia announced that Jensen Huang would step down as chief executive, and its shares closed down more than 4%. Components fell more than 8% and communications equipment more than 6%, and Suntak (沪电股份), Kinwong (景旺电子) and Huazheng New Materials (华正新材) were locked at limit-down. The second was high-flying stocks that had climbed on the robotics theme. Xiangyang Bearing (襄阳轴承) lost momentum after eight consecutive limit-up days and was pushed to the floor in late trading. Daye Co. (大业股份) had a tendon-rope product still at the sample-submission stage, and it also hit limit-down in the afternoon. The third was a broad weakening in medical devices, with Nanwei Co. (南卫股份) among the steepest decliners. All three stocks hit limit-down for the first time in this cycle. Even after the close, their premiums over the Jian'an pricing benchmark remained between 63% and nearly 100%.

**I. Market Overview**

On November 13, China's five major A-share indexes rallied early in the session and then declined steadily. The Shanghai Composite Index fell 0.59% to 3,634.35 points. The Shenzhen Component Index fell 2.05% to 10,968.79 points. The ChiNext Index fell 3.32% to 2,426.08 points. The STAR 50 fell 2.30%, and the BSE 50 fell 3.50%. Combined turnover in Shanghai and Shenzhen was RMB 1,655.7 billion, down RMB 276.4 billion from the previous session. Advancing and declining stocks stood at 765 and 4,748, respectively. There were 39 limit-down stocks, one more than the number of limit-up stocks.

**II. Investment Opportunities in First-Time Limit-Down Stocks**

**1. Nanwei Co. (603880): Valuation Correction After a Thematic Retreat**

Nanwei produces adhesive bandages, medical adhesive tape and protective products. Bandages and protective products together account for 65% of revenue. The premium came from the flu and face-mask theme. Its small market capitalization and pandemic-era associations pushed the stock to limit-up at the start of the month. The fundamentals offer no support. Revenue fell nearly 10% in the first three quarters, and the net loss attributable to shareholders reached RMB 29 million, widening year on year. Gross margin is below 10%, and the debt ratio is 82%. The stock opened lower today, rallied, then reversed. It was locked at limit-down in the afternoon and has fallen 7.24% over the past five days.

*Risk warning:* The valuation is nearly double the Jian'an pricing benchmark, and the premium rests entirely on the theme rather than on operations. Protective demand during flu season is genuinely seasonal. However, the company is loss-making, has a gross margin below 10% and a debt ratio above 80%, and depends on financial assistance from its major shareholders to manage its cash flow. Turnover after the drop is still below 5%, so chips have not been cleared. Investors should track whether fourth-quarter orders can halt the revenue decline. A rebound should not be treated as a recovery.

**2. Xiangyang Bearing (000678): Valuation Correction After a Limit-Up Streak Fades**

Xiangyang Bearing is a long-established automotive bearing maker. Bearings and auto parts account for nearly all of its revenue, while bearings for robot reducers make up a very small share. The premium came from the robotics concept, which has repeatedly fermented since late September. The stock hit limit-up eight times in 15 trading days, with a gain of about 150% over the period. In an unusual-movement announcement, the company acknowledged that its share price had diverged from its fundamentals and reiterated that this business would not contribute to earnings in the short term. The stock opened lower today, rebounded into positive territory, weakened in the afternoon, and was locked at limit-down near the close. It still gained 11.14% over the past five days.

*Risk warning:* The valuation is 65% above the Jian'an pricing benchmark. Revenue from robot-reducer bearings is too small to support this level, and the premium is propped up by concept trading and speculative capital. After eight limit-up days, chips are highly dispersed. The stock touched limit-up intraday yesterday but was locked at limit-down near today's close, leaving investors who chased the rally with no easy exit. The company has posted losses for three consecutive years, and its core business lacks a clear path to recovery. Investors should track whether precision bearings can enter volume supply. A rebound after a sharp decline should not be read as a reversal.

**3. Daye Co. (603278): Valuation Correction After a Concept Retreat**

Daye's main products are tire bead wire, steel cord and hose wire, which together account for more than 97% of revenue. The premium came from tendon ropes for humanoid robots. The product is still in sample verification, with no orders and no revenue. Its earnings have moved in the opposite direction: the net loss attributable to shareholders was RMB 116 million in the first three quarters, compared with a profit in the same period last year. After hitting limit-down last week, the stock posted gains for three consecutive days. Today it opened lower and attempted a rebound that failed to reach yesterday's close, then was locked at limit-down in the afternoon. Over the past five days, it has gained a slight 2% cumulatively.

*Risk warning:* The valuation is 63% above the Jian'an pricing benchmark, and the premium rests on a rope that has not yet entered mass production. The tendon rope is still at the sample stage. The company's core products, tire bead wire and steel cord, face price pressure amid weakening downstream demand. It swung from profit to a loss of more than RMB 100 million in the first three quarters. Today's turnover was about 30% lower than yesterday's, with little appetite for buying. Investors should track whether single-quarter gross margin can turn positive and how sample submissions progress. Now that the concept has faded, the stock should not be considered cheap simply because it has fallen.

**III. Market Summary and Investment Recommendations**

November 13 marked a concentrated clearing of high-level positions. All five major indexes closed lower, the ChiNext Index fell more than 3%, more than 4,700 stocks declined, and there were 39 limit-down stocks, one more than limit-up stocks. The selling was not limited to technology. Concept stocks were also caught in it. The computing-power chain was broken by upheaval at overseas leaders. Two familiar names in the robotics supply chain were pinned to the floor after rebounding, and medical devices took an additional blow amid sector-wide weakness.

The three stocks all carry premiums above 60%, but their sources differ. Nanwei is selling a seasonal association with flu and masks, and its underlying business has been shrinking for years with widening losses. Xiangyang Bearing is selling the promise of robotic bearings, a segment that accounts for a very small share of revenue, and the company itself acknowledged in its unusual-movement announcement that its share price had diverged from fundamentals. Daye is selling tendon ropes that are not yet in mass production, and its third-quarter report put its swing from profit to loss on the table. None of the three has earnings support. The limit-down moves simply returned expectations to where they started. Valuation should be revisited only after orders, loss reductions and positive cash flow appear.