US & Hong Kong Market Pulse (2026-10-09)

Report date: 2026-10-09 | Data cutoff: 2026-10-08 17:00 ET (after the US close) Sources: X posts were retrieved in real time with grok-x x_search (from 2026-10-07). Stock and ETF moves come from Eastmoney/Tencent closing snapshots and the platform's closing lists. Yields come from FRED. Options flow comes from the platform's post-close scan (2026-10-08 17:36 ET). X posts are used only for events, opinions and sentiment; price figures inside posts are not quoted.

1. Key Events

1. US tech pulled back, led by chips. FirstSquawk's closing wire said reports about OpenAI's revenue outlook deepened the chip selloff and revived doubts about whether the AI investment boom can keep its pace. Closing data: QQQ −1.34%, SOXX −3.35%, SPY −0.42%, DIA +0.12%, IWM −0.05%. Single stocks: NVDA −2.94%, INTC −5.34%, MU −4.79%, AMD −3.90%, the TSM ADR −3.01%, SNDK −4.90%. —@FirstSquawk 𝕏
2. Hawkish September FOMC minutes. According to @KobeissiLetter, all 19 officials backed the September hike, most expect another hike by year-end, and almost all see inflation risks tilted to the upside. FRED shows the fed funds rate at 3.75% (September). 𝕏
3. Treasury yields climbed. Per @KobeissiLetter, the 10Y yield rose above 5.35% intraday for the first time in 24 years, and mortgage rates hit 3-year highs. FRED shows 10Y at 5.28% and 2Y at 4.77% on 10-07, a spread of +0.47pt. In 10-08 premarket the same account said Dow futures fell nearly 500 points and oil rose more than 5%, but the Dow ETF DIA closed +0.12%. 𝕏¹ 𝕏²
4. Hong Kong AI stocks slumped. The Hang Seng Index fell 1.43% to 23,785.79 and the Hang Seng Tech Index fell 2.89% to 4,073.38. LLM names led the decline: MINIMAX-W (00100) −13.74%, Zhipu (02513) −7.61%. Posts on X widely blamed fears of a price war after overseas model API price cuts. On 10-07, wires had already reported the Hang Seng AI Theme Index down more than 3%. —@FirstSquawk, @financialjuice, @yangye01 𝕏¹ 𝕏² 𝕏³
5. Hang Seng Tech Index will expand. Constituents will go from 30 to 50, with a new group selected by revenue growth, effective in December. —@yicaichina 𝕏
6. HAE surged. CSL said it plans to move its US plasma centers onto Haemonetics devices by the end of 2027. HAE closed +17.46% at $119.47. —@ClosingBellHQ 𝕏
7. argenx plunged. The company stopped the Phase 3 trial of Vyvgart in Sjögren's disease after an independent data monitoring committee judged it unlikely to meet its primary endpoint. ARGX closed −11.83% at $818.63. —@TickerScope 𝕏
8. Hong Kong regulators weighed in. The SFC, AFRC and HKEX issued a joint statement on the rising number of financial statements that receive a disclaimer of opinion solely because of going-concern doubts. Per Bloomberg, regulators said they may reverse the rule that currently lets such companies keep trading. —@business, @fxtrader 𝕏¹ 𝕏²

2. Institutional & Media Coverage

Factual reporting

• Open and close: FirstSquawk reported a lower open for all three indexes on 10-08 and a close in which tech led S&P losses. On ETF closes, QQQ −1.34%, SPY −0.42% and DIA +0.12%: tech-heavy large caps dragged the market while the Dow held up better. 𝕏¹ 𝕏²

• AI compute demand: FactSet's StreetAccount morning check-in on 10-07 cited a report that SpaceX is looking to raise $40B to buy Nvidia chips. NVDA closed −2.94% on 10-08. —@FactSet 𝕏

• HBM supply chain: @jukan05 relayed Korean media reports:

  • Samsung's 12-high HBM4E passed qualification at Nvidia and other customers;
  • Samsung and AMD met, with Samsung seeking AMD foundry orders in exchange for HBM supply, while AMD sees using Samsung Foundry as "too risky". 𝕏¹ 𝕏²

• Micron: @jukan05 said Micron's Taiwan union won a mandate to strike over a bonus dispute. MU closed −4.79%. 𝕏

• Intel: @jukan05 relayed that CEO Lip-Bu Tan said Intel will keep working with Terafab, and @PatrickMoorhead said Intel is "very much a part of Terafab despite the rumors." INTC still closed −5.34%: positive news, but the stock fell with the sector. 𝕏¹ 𝕏²

• HK biotech: The Hang Seng Biotech Index fell more than 3% on 10-07. —@FirstSquawk 𝕏

• China EVs: Per @CnEVPost:

  • NIO's Onvo brand reached 200,000 cumulative deliveries;
  • Xiaomi's Sky Nomad lineup passed 70,000 locked-in orders in its first month;
  • Highway NEV charging volume rose more than 50% during the National Day holiday, totaling 163 million kWh from Oct 1–7.

  The NIO ADR closed −3.67% and Xiaomi (01810) −1.17%. 𝕏¹ 𝕏² 𝕏³

• Refiners: PBF closed +6.76%. Posts noted refiners charging ahead ($VLO $PBF $DINO), but no specific catalyst was found. 𝕏

Views/ratings

• Flutter: @zerohedge reported in 10-07 premarket that Citi upgraded FLUT to Buy from Neutral. FLUT closed +7.55% on 10-08; no direct catalyst for that day's move was found. 𝕏
• AMD dual-sourcing: @PatrickMoorhead argues AMD will be among the last to dual-source away from TSMC, citing loyalty and limited resources: "Apple and NVIDIA have the resources to dual-source; AMD does not." 𝕏
• Yields and stocks: @LizAnnSonders noted that the correlation between the 10Y yield and the S&P 500 remains deeply negative, more so on days when yields rise. 𝕏
• China/HK allocation: @cnfinancewatch compiled CITIC Securities' research directions: overweight innovative pharma, property and shipping/tankers; drop baijiu and AI compute/software. 𝕏

3. KOL Bull & Bear Views

US broad market & rates

Bullish

• @RyanDetrick (≈88 likes): Since 2019 the S&P is up 168%, with 137pt from earnings growth, 26pt from dividends and only about 5pt from multiple expansion: "We hear this market is 'overvalued'… I don't think so." 𝕏
• @RyanDetrick (≈40 likes): "profit growth is overpowering the rise in yields". He also notes Q4 averages a 4.2% gain and is higher more than 80% of the time. 𝕏
• @CheddarFlow (≈166 likes): QQQ has a $1.2B call wall at 760 and SPY a $2B+ call wall at 785; he calls positioning "aggressively bullish", betting on a swift upside move. 𝕏
• @CheddarFlow (≈223 likes): Someone bought about $1.3M of deep out-of-the-money QQQ 835-strike calls. 𝕏

Bearish

• @KobeissiLetter (≈5.3k likes / 833 reposts): The 10Y yield rose above 5.35% for the first time in 24 years, and mortgage rates hit 3-year highs. 𝕏
• @KobeissiLetter (≈2.8k likes): The Fed minutes show most officials expect another hike by year-end. 𝕏
• @TimmerFidelity (≈254 likes): "the Fed should not have eased in 2025 and now must take those rate cuts back". He reads the market as forcing the Fed to reverse its earlier cuts. 𝕏
• @JasonColelfod (≈1.1k views): He argues the record S&P high rests mostly on NVDA: "Are you long the market, or are you long $NVDA and calling it the market?" 𝕏

Semiconductors (NVDA / INTC / MU / AMD)

Bullish

• @CheddarFlow (≈156 likes): "$NVDA & $INTC have the most BULLISH flow so far today", plus more than $5M of INTC and NVDA call sweepers. The two stocks closed −2.94% and −5.34%, so the bullish flow ran opposite to the price action. 𝕏¹ 𝕏²
• @jukan05 (≈432 likes): Samsung's HBM4E passed Nvidia qualification, which could ease tight HBM supply. 𝕏

Bearish

• @jukan05 (≈411 likes): Micron's Taiwan union won a strike mandate. 𝕏
• @jukan05 (≈637 likes) and @PatrickMoorhead (≈172 likes): AMD urgently needs HBM but is reluctant to hand foundry work to Samsung, so HBM supply is under pressure. 𝕏¹ 𝕏²
• @YahyaBulamakyar (small account, ≈119 views): He argued that on 10-07 only MU rose while NVDA and AMD closed lower: "That isn't a broad AI bid." That refers to the prior session; MU also closed −4.79% on 10-08. 𝕏

Hong Kong

Bullish

• Hang Seng Tech expansion: Several Chinese-language users read the expansion to 50 names as a structural positive. For example, @freestyle_error (≈149 views) notes it takes effect Dec 7, with 40 names chosen by market cap and 10 by revenue growth. 𝕏
• @SYU77996 (≈2.8k views): Relays that Duan Yongping bought Tencent again over the holiday: "腾讯是很好的公司，要惜卖" (Tencent is a great company; don't sell it lightly). Tencent (00700) closed −2.19%. 𝕏

Bearish

• @wanlitouzi (≈74 views): "港股这几家大模型公司本来就没盈利，API一便宜，市场直接按以后只能打价格战给估值" (these HK LLM companies were never profitable; once APIs get cheap, the market values them as if price wars are all that's left). 𝕏
• @ThetaRider_L: He argues the selloff is not about fundamentals but about markets repricing how much the AI narrative is really worth. 𝕏
• @cnfinancewatch (≈4.7k views): "美元加息对全球流动性是威胁；港股已经充分说明反应" (US rate hikes threaten global liquidity, and Hong Kong stocks have already shown the reaction). He suggests cutting A-share growth exposure in favor of dividend and cyclical stocks. 𝕏
• @ssslumdunk (≈2.4k views): "恒生科技……完全跌破支撑位" (Hang Seng Tech has fully broken support). 𝕏

4. Buzz & Sentiment Shifts

• US market: Buzz was elevated and focused on three things: hawkish FOMC minutes, record-high 10Y yields and the AI-chain selloff. The split was roughly 40/60 bull/bear, leaning cautious. Macro accounts mostly worried about rates, while @RyanDetrick and @CheddarFlow stuck with the earnings and positioning bull case. Compared with the prior day, the tone shifted from "record S&P on narrow breadth" to "active tech de-risking", driven by the OpenAI revenue-outlook reports and yields.
• Semis/AI: This was the hottest topic, with several sources of news: HBM qualification, AMD–Samsung talks, the Micron strike and Intel–Terafab. Single-stock options flow leaned bullish, yet every name closed lower, and optical and interconnect stocks fell harder: AAOI −13.58%, COHR −9.63%, ALAB −9.21%, MXL −12.72%. No specific explanation for the optical selloff was found on X.
• Hong Kong: Buzz in Chinese-language communities rose sharply and sentiment turned clearly bearish, roughly 70% negative, centered on LLM names and Hang Seng Tech breaking support. The index expansion was the main bullish talking point. Compared with the prior day, the story moved from "AI theme index −3%" to "Hang Seng Tech at a multi-month low".
• Single-name events: HAE, ARGX and CSGP appeared mainly in closing gainers/losers posts. The catalysts were clear, but discussion was thin and there was little bull/bear debate.

5. US Options Flow

The market-wide Put/Call premium ratio was 0.73 (post-close scan of 161 liquid tickers).

Key reads

1. NVDA: buying protection into a falling tape. NVDA closed −2.94%. Volume in the $185 put was 6.2 times open interest, meaning heavy new positions, at about 40% IV and more than $41M of premium. Together with the 100k+ $180 contracts, money is buying long-dated protection against a deeper AI-chain pullback, consistent with the worries sparked by the OpenAI revenue reports. This does not contradict @CheddarFlow's "most bullish NVDA flow": call speculation and put hedging were both active that day, and the hedges were larger by premium.
2. IBIT: long-dated hedge alongside the miner selloff. About 45k contracts each traded in the 344-day $46 and $40 puts, almost all new, which looks like a put spread. The same day IBIT fell 2.01%, while Bitcoin miners and compute-hosting names dropped: HUT −10.87%, RIOT −9.17%, CIFR −7.28%. This looks like an institution hedging spot or miner exposure for a year rather than short-term speculation. No specific reason for the miners' decline was found on X.
3. QQQ: short-dated call speculation plus index put hedges. QQQ closed −1.34%, yet near-the-money calls at $746–$756 expiring in 4–5 days saw heavy new opening at only 12%–14% IV, a cheap bet on a quick rebound. At the same time, the $680 and $740 longer-dated puts and the SPY and IWM puts each carried eight-figure premium. Taken together, traders were betting on a short-term bounce while buying medium-term protection.

Overall sentiment: Put/Call is 0.73, below 1 and nominally bullish. But the largest premiums sat in NVDA, IBIT and index puts, so the day looks more like rising hedging demand than a broad bearish turn.

Disclaimer: This report compiles public X posts and public market data for informational and educational purposes only and is not investment advice. Opinions belong to the original authors and have not been independently verified; prices are based on exchange closing data.