---
title: "📈 AI Stock Chat, 2026-09-11 | Foreign capital's 80,000 short contracts weighing down! Next Monday's 46,800 defense battle begins?"
description: "Hi everyone, I'm Mu Yan! After a hard week of work, the weekend is finally here. But before you relax, I'm here to help you do your homework in advance. In today's episode, we'll plan ahead and predict the trend of the Taiwan stock market for the next trading day, Monday, September 14, 2026. Facing the US stock pullback and record-high short positions from foreign investors, how should we defend ourselves next Monday? Let's tune in to find out!"
canonical_url: "https://blog.markkulab.net/en/ai-stock-chat/ai-stock-chat-2026-09-11"
author: "Mark Ku"
author_url: "https://blog.markkulab.net/en/author/mark-ku"
site: "Mark Ku's Tech Notes"
date_published: "2026-09-11 10:00:00 +0800"
category: "AI Stock Market Chit-Chat"
tags: ["ai-stock", "podcast", "台股預測", "台股", "AI預測", "外資空單", "台積電2330", "豐泰9910", "合庫金5880"]
language: "en"
license: "CC BY 4.0"
license_url: "https://creativecommons.org/licenses/by/4.0/"
attribution: "when reusing or quoting, credit the author and link back to the original"
---

# 📈 AI Stock Chat, 2026-09-11 | Foreign capital's 80,000 short contracts weighing down! Next Monday's 46,800 defense battle begins?

## Opening Remarks
Hi everyone, I'm Mu-Yen! After a hard week's work, the weekend is finally here. But before you relax, I'm here to help you get your homework done ahead of time. In today's episode, we're going to plan ahead and predict the market trend for the next trading day, **Monday, September 14, 2026**. Facing a pullback in US stocks and record-high short positions from foreign institutional investors, how should we defend our positions next Monday? Let's dive right in!

## Today's Market Forecast

<figure class="stock-chart" style="margin:1.25rem 0"><svg role="img" aria-label="TAIEX AI Forecast Range (Next-Day / Short-Term)" viewBox="0 0 612 130" width="100%" style="height:auto;max-width:612px;min-width:480px;font-family:ui-sans-serif,system-ui,sans-serif;font-size:12px"><line x1="206.0" y1="20" x2="206.0" y2="122" stroke="currentColor" stroke-width="1" stroke-dasharray="3 3" opacity=".45"/><text x="206" y="14" fill="currentColor" text-anchor="middle" opacity=".7">Current Price 47183.36</text><text x="48" y="57" fill="currentColor" text-anchor="end" font-weight="600">Next-Day</text><line x1="56" y1="53" x2="356" y2="53" stroke="currentColor" stroke-width="1" opacity=".18"/><rect x="148.2" y="44" width="115.7" height="18" rx="4" fill="#f59e0b" fill-opacity=".22" stroke="#f59e0b" stroke-width="1.5"/><text x="366" y="57" fill="currentColor">Neutral · 46782.10~47584.62 · Confidence 75%</text><text x="48" y="103" fill="currentColor" text-anchor="end" font-weight="600">Short-Term</text><line x1="56" y1="99" x2="356" y2="99" stroke="currentColor" stroke-width="1" opacity=".18"/><rect x="76.7" y="90" width="258.6" height="18" rx="4" fill="#f59e0b" fill-opacity=".22" stroke="#f59e0b" stroke-width="1.5"/><text x="366" y="103" fill="currentColor">Neutral · 46286.12~48080.60 · Confidence 75%</text></svg><figcaption style="font-size:12px;opacity:.6;margin-top:.25rem">TAIEX AI Forecast Range (Next-Day / Short-Term)</figcaption></figure>

Our AI model's forecast for the market on **Monday, September 14, 2026** is as follows:

| Horizon | Current Price | Forecast Direction | Target Range | Confidence |
| --- | --- | --- | --- | --- |
| Next-Day (09-14) | 47183.36 | Neutral | 46782.1~47584.62 | 75.0% |
| Short-Term (1 Week) | 47183.36 | Neutral | 46286.12~48080.6 | 75.0% |

Although the AI model predicts a "neutral" consolidation, looking at the current market sentiment, the overall atmosphere is actually "neutral to bearish." The main reason is the escalating conflict in the Middle East, which has driven international oil prices past $100, sparking inflation concerns and causing US stocks to pull back across the board.

More critically, foreign institutional investors have left a staggering short position of over 80,000 contracts in futures! This means that when the market opens on **Monday, September 14, 2026**, it will face heavy downward pressure. The most important thing to watch next Monday is whether the TAIEX can hold the key psychological level of 46,800 after a lower open, and whether the heavyweight stock TSMC can stabilize. We advise beginner investors to stay on the sidelines for now and avoid chasing highs!

## Global Market Status
Below is the current global market status as of now (this data represents current market conditions only, not AI forecasts):

| Index | Close | % Change |
| --- | --- | --- |
| TAIEX Futures Night Session (TXF) | 46984 | -0.41% |
| Dow Jones Industrial Average (DJI) | 52380.66 | -0.77% |
| S&P 500 Index (GSPC) | 7636.36 | -0.48% |
| Nasdaq Composite (IXIC) | 26253.34 | -0.64% |
| Philadelphia Semiconductor Index (SOX) | 11931.32 | 0.37% |

Major US indices mostly closed in the red, and the TAIEX futures night session also fell by 0.41%. However, the Philadelphia Semiconductor Index bucked the trend to close slightly higher, which might provide some support for tech stocks next Monday.

## Key Stock AI Forecasts
After evaluation, the AI model indicates high market volatility, so there are no key stock forecasts meeting our criteria today. We adhere to the principle of honesty and transparency—we never force data we aren't confident in. If there are new stock forecasts next week, I will share them with you in the show immediately!

## Strategic Stock Selection Radar
I would like to remind everyone that the following content is filtered through quantitative strategies and is **not a buy/sell forecast for individual stocks**.

To help you understand, we have combined a 100-point "Overall Score" with a "Strategy Decision Indicator Value" (ranging from -5 to +5: if $\ge 2$, it means technical indicators show a bullish signal; if $\le -2$, it means technical indicators show a bearish signal; anything in between represents a wait-and-see signal):

| Stock | Overall Score | Chip Score | P/E Ratio | Valuation |
| --- | --- | --- | --- | --- |
| TCFHC (5880) | 78 | 100 | 17.55 | cheap |
| Feng Tay (9910) | 72 | 100 | - | - |
| Hotai Motor (2207) | 71 | 88 | 13.03 | cheap |
| TSMC (2330) | 69 | 100 | 28.57 | expensive |
| Formosa Plastics (1301) | 68 | 88 | 40.67 | fair |

*Note: Since Feng Tay (9910) currently has no earnings data, the P/E ratio and valuation columns are shown as empty.*

**Selection Reasons and Plain English Analysis:**
1. **TCFHC (5880)**: Overall score of 78, with a perfect chip score of 100, and a relatively cheap valuation. However, the current strategy indicator value is -0.2, which is in the wait-and-see range. Although the momentum indicator (CCI 128.64) shows short-term strengthening, the Williams %R has reached the overbought zone at 0, indicating a significant short-term rally. Investors should be cautious of the risk of chasing highs.
2. **Feng Tay (9910)**: Overall score of 72, with a chip score of 100. The current strategy indicator value is 3.2, with technical indicators showing a bullish signal. This is mainly because the 5-day moving average crossed above the 20-day moving average (MA5 golden cross MA20), and the Williams %R has reached the oversold zone at -81.36, indicating that the stock price has previously oversold and is now showing a potential rebound and strengthening signal.
3. **Hotai Motor (2207)**: Overall score of 71, with a chip score of 88, and a relatively cheap valuation. The strategy indicator value is -1.0, placing it in the wait-and-see range. Technically, a "volume-price bearish divergence" has appeared, indicating insufficient buying momentum at higher prices, which warrants caution.
4. **TSMC (2330)**: Overall score of 69, with a chip score of 100, and a currently expensive valuation. The strategy indicator value is -2.5, with technical indicators showing a bearish signal. Although the momentum indicator (CCI 173.56) has strengthened, technical patterns show a Bearish Engulfing candlestick pattern, MACD bearish divergence (indicating the upward momentum is losing steam), and volume-price bearish divergence. Its resilience next Monday, September 14, will be a key defensive focus.
5. **Formosa Plastics (1301)**: Overall score of 68, with a chip score of 88, and a fair valuation. The strategy indicator value is 0.0, showing no clear buy or sell signal, placing it in the wait-and-see range. However, the overall chart maintains a bullish moving average alignment, with the stock price standing above the monthly line and the short-term KD indicator pointing upward, showing relatively stable performance.

## Recent Forecast Accuracy Review
Honesty and transparency are the core principles of "AI Stock Chat"! Since this show has just launched, we **do not yet have enough settled forecast samples**. I will never inflate the numbers just to make things look good. Once we accumulate enough settled data, whether the accuracy is good or bad, I will definitely list them truthfully for everyone to review together!

## Disclaimer
This content is automatically generated by an AI model based on quantitative data and is for research reference only, not investment advice. Investing involves risk; please make your own judgments and assume all responsibility.

---

## About this article and its author

Originally published on [Mark Ku's Tech Notes](https://blog.markkulab.net/en/ai-stock-chat/ai-stock-chat-2026-09-11)

License: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) — when reusing or quoting, credit the author and link back to the original

### About the author

**[Mark Ku](https://blog.markkulab.net/en/author/mark-ku)** — Software Solution Provider

- 10+ years senior software engineer, now an AI Builder
- Focused on large-platform architecture — North-American e-commerce, AI SaaS subscription billing
- Combining AI Agents and automation to build evolvable product foundations

### Free tools built by the author

All of these are free to use:

- [Free PDF Sign Tool](https://blog.markkulab.net/en/tools/pdf-sign): Online PDF sign tool — draw, type, or upload a signature, then drag, resize, and download. Everything runs in your browser; nothing is uploaded.
- [VS Code Refactory](https://blog.markkulab.net/en/tools/refactory): Refactory is a VS Code refactoring extension: 34 actions plus a 37-rule code-smell inspection layer with a Code Health dashboard, across 18 languages, backed by 534 tests. It learns your repo's conventions: where interfaces live, where DI is registered, whether 'use client' belongs. It ranks files by git churn × complexity so you know what to fix first, and hands any smell to the Claude Code already on your machine. Free to use, and your source never leaves your computer.
- [DB-Kit Database Manager](https://blog.markkulab.net/en/tools/db-kit): DB-Kit is a lightweight, cross-platform database manager built with Tauri + Rust + React. Manage MySQL, MariaDB, PostgreSQL, SQL Server, Oracle, SQLite, MongoDB, Redis, Kafka, Elasticsearch and RabbitMQ from one consistent interface: passwords encrypted in the OS keychain, SSH tunnels, full CRUD, a visual query builder, stacked multi-statement result sets, cross-connection data transfer and compare/sync, Excel / CSV import & export, visualized execution plans, ER diagrams, scheduled backups, SQL stress testing with p50–p99 latency percentiles, a 15-rule SQL review engine, Kafka message browsing with monitoring & alerts, a bilingual UI (Traditional Chinese / English), a built-in AI assistant (a local CLI or any Anthropic / OpenAI-compatible API; natural-language SQL, AI review and tuning advice) and the dbk CLI. Free and open source (MIT), with installers for Windows, macOS and Linux.
- [VS Code Super Mermaid](https://blog.markkulab.net/en/tools/super-mermaid): Super Mermaid is a VS Code extension for beautiful Mermaid diagrams out of the box: auto-colored live preview, mouse pan & zoom, high-res PNG / SVG export, 21 templates and multiple themes. Free and open source (MIT).
- [React Super Mermaid](https://blog.markkulab.net/en/tools/react-super-mermaid): react-super-mermaid is an open-source React component library: render beautiful Mermaid diagrams with a single <MermaidViewer>, with built-in colorful / sketch themes, pan & zoom, in-diagram search, and high-res SVG / PNG export. Lightweight, SSR-safe, fully typed. Free and open source (MIT).
- [Jira / Confluence Super Mermaid](https://blog.markkulab.net/en/tools/jira-super-mermaid): An Atlassian Forge app: write Mermaid syntax directly inside a Jira issue or a Confluence page and get flowcharts, sequence diagrams, state machines and Gantt charts. 11 diagram types, SVG / PNG export, light and dark themes, full CJK support. Runs on Atlassian: your diagrams live in your own site and the app calls no third-party service. Free, coming soon to the Atlassian Marketplace.
- [Mermaid Live Preview](https://blog.markkulab.net/en/tools/mermaid-preview): Write Mermaid in your browser, see it render instantly, and share the whole diagram as a single link. No sign-up, nothing uploaded to a server, and mermaid.live share links work as-is.
- [React Intl Phone Number](https://blog.markkulab.net/en/tools/react-intl-phone-number): react-intl-phone-number is an open-source React component: framework-agnostic and antd-free, with E.164 in/out, a searchable flag / country-code dropdown, configurable validation levels (strict / mobile-strict / loose), themeable CSS, and i18n — phone logic powered by google-libphonenumber. Lightweight and fully typed. Free and open source (MIT).
- [Uptime Kuma Cluster](https://blog.markkulab.net/en/tools/uptime-kuma-cluster): Turn single-node Uptime Kuma into a highly available cluster: OpenResty + Lua smart load balancing, shared MariaDB state, health checks and automatic failover, plus cluster-management REST APIs. One Docker Compose command to start. Free and open source (MIT).
- [AI Podcast Cut](https://blog.markkulab.net/en/tools/ai-podcast-cut): Drop in a recording and it removes fillers and stutters, levels loudness segment by segment, and sends a second agent to review every cut. Cut points snap to word boundaries and zero crossings, every splice gets a fade, and sentence-end breaths are preserved. Desktop app for Windows, macOS and Linux. MIT licensed; the Windows installer bundles ffmpeg.
- [open-pos restaurant POS](https://blog.markkulab.net/en/tools/open-pos): One computer and one receipt printer is enough to open the shop. Your data lives on your own disk, no subscription, no lock-in, MIT licensed. Money is integer New Taiwan dollars with tax split by the statutory formula, so sales + tax always equals the total. Printing goes straight over ESC/POS on TCP 9100, with no vendor driver. Tauri + Rust + SQLite desktop app, v1.0 in development.
- [Special Education](https://blog.markkulab.net/en/education): Learning materials crafted for special education students

### Daily podcasts

- [Mark's Tech Insights — Daily AI News](https://blog.markkulab.net/en/category/tech-news): Daily curated AI and tech trends. Catch the latest developments via audio summaries — covering AI applications, software architecture, DevOps, and engineering practice. — RSS: https://blog.markkulab.net/feed.xml
- [AI股市蝦聊](https://blog.markkulab.net/en/category/ai-stock-chat): Every trading day, an AI-analyzed take on the Taiwan stock market, delivered as a two-host conversation covering the session and the next-day outlook. — RSS: https://blog.markkulab.net/ai-stock-chat/feed.xml
- [開源好物週報](https://blog.markkulab.net/en/category/open-source-weekly): A weekly two-host pick of free open-source tools surfaced from real Hacker News, GitHub, and Reddit buzz — what pain they solve and the fastest way to get started. — RSS: https://blog.markkulab.net/open-source-weekly/feed.xml

### Deals

- [NordVPN](https://blog.markkulab.net/en/nordvpn): The world's leading VPN, independently audited
- [PremLogin](https://blog.markkulab.net/en/premlogin): Subscription sharing for streaming and AI seats，Promo code：markku666

### Newsletter

[Subscribe to the newsletter](https://blog.markkulab.net/en/subscribe) — Be the first to know about new posts. No spam, unsubscribe anytime.
