Mark Ku's Blog
Podcast ConversationAI dialogue version of this article · Mandarin audio

Opening

Hi, welcome to "AI Stock Chat," I'm Muyan! This episode was recorded on Tuesday, September 15, 2026, getting you ready ahead of time for the next trading day, Wednesday, September 16, 2026, in the Taiwan stock market. Quick spoiler: this time the AI model is flashing a bearish signal for both the next-day and short-term outlooks, with the main pressure coming from a nearly 6% plunge in the US Philadelphia Semiconductor Index. Let's dive right in.

Today's Index Forecast

Current price 45862.52Next-DayBearish · 45530.24~46053.93 · Confidence 69%Short-TermBearish · 44721.10~45892.10 · Confidence 69%
Weighted Index AI Prediction Range (Next-Day / Short-Term)
HorizonCurrent PriceDirectionTarget RangeConfidence
Next-Day45862.52Bearish45530.24~46053.9369.0%
Short-Term45862.52Bearish44721.1~45892.169.0%

This time the AI model leans bearish on both the next-day and short-term outlooks, with confidence sitting at 69% for both, decent conviction but not quite a slam dunk. Looking at the market's underlying health on September 14, only 336 stocks advanced while 673 declined, so sentiment was already leaning weak even before factoring in the overseas semiconductor headwinds. Heading into the open on September 16, 2026, it's worth mentally preparing for a choppy, downward-leaning session.

Global Market Snapshot

IndexClose% Change
Taiwan Futures Night Session (TXF)45556-0.48%
Dow Jones Industrial Average (DJI)52421.2-0.29%
S&P 500 (GSPC)7619.98-0.48%
Nasdaq Composite (IXIC)26186.41-0.56%
Philadelphia Semiconductor Index (SOX)11131.28-5.86%

The standout among the four major indices is clearly the Philadelphia Semiconductor Index, which dropped nearly 6%, an entirely different league from the sub-1% declines elsewhere. The Taiwan futures night session also closed lower in tandem, and this chill in the semiconductor sector is worth keeping a close eye on.

Key Stock AI Predictions

The service didn't generate an AI prediction list for individual stocks today, so we'll skip this section for now and dive into it in detail once individual stock predictions are available.

Strategy Stock-Picking Radar

The following are strategy screening results, not buy/sell predictions for individual stocks, so take them as reference only.

StockOverall ScoreChip ScoreP/E RatioValuation
Novatek (3034)7610019.4Expensive
Quanta Computer (2382)7210014.49Cheap
Hua Nan Financial (2880)7210020.04Expensive
First Financial (2892)71100,,
Chunghwa Telecom (2412)7010028Expensive

All five of these stocks scored a perfect 100 on the chip score, though technical signals are mixed. Both Hua Nan Financial and First Financial are flashing overbought warnings on RSI or Williams %R, so before chasing the rally, it's worth thinking through the risks carefully before deciding whether to enter.

Recent Prediction Accuracy Review

Index · Next-Day50% (1/2)
Recent Directional Hit Rate (Higher Is Better; Includes Settled Sample Size)

To be honest with you, the recent directional hit rate for next-day index predictions is 50%, getting it right just once out of two tries, about the same odds as a coin flip. The target range is a stricter bar, and neither of the two predictions landed fully within it, though the average error was only 0.64%, meaning that even when the direction is occasionally off, the actual deviation stays fairly contained. This track record is a reminder that AI predictions are for reference only, never treat them as a guaranteed formula for profit.

Disclaimer

This content is automatically generated by an AI model based on quantitative data. It is for research reference only and does not constitute investment advice. Investing involves risk; please exercise independent judgment and bear responsibility for your own decisions.

Author

Mark Ku

擁有 10+ 年經驗的資深軟體工程師,現為 AI 應用 Builder,專注於大型平台架構與簡化複雜系統設計,從電商系統到訂閱與收費平台,結合 AI Agent、AI 整合與自動化開發,打造高效率且可持續演進的產品技術基礎。Read More

Found this useful?

The author's free tools, daily podcasts and newsletter are all here.

Mark Ku · This article is licensed under CC BY 4.0. Credit the author and link back to the original when reusing it.

Comments

Subscribe to Newsletter

Subscribe to get new posts delivered instantly — never miss a tech share.

By submitting, you agree to receive emails. You can anytime.

Popular Posts

View all
Mark Ku
··645

Oracle Cloud Always Free Tier: Linux Host and Static IP for a $0 Cloud Solution

Oracle Cloud Always Free Tier: Linux Host and Static IP for a $0 Cloud Solution
Mark Ku
··552

Say Goodbye to Postman's Fee Trap! A Hands-on Guide to Bruno, the Open-Source Git-Native API Testing Powerhouse.

Say Goodbye to Postman's Fee Trap! A Hands-on Guide to Bruno, the Open-Source Git-Native API Testing Powerhouse.
Mark Ku
··331

A Free, Open-Source, Notion-like Knowledge Base — A Complete Guide to Deploying and Backing Up Outline Wiki

A Free, Open-Source, Notion-like Knowledge Base — A Complete Guide to Deploying and Backing Up Outline Wiki
Mark Ku
··265

Training Your Own AI Voice: Hardware Requirements, Open-Source Model Comparison, and LoRA Fine-Tuning

Training Your Own AI Voice: Hardware Requirements, Open-Source Model Comparison, and LoRA Fine-Tuning
Mark Ku
··231

Building an Efficient API Management Platform: Deploying Kong Gateway from Scratch - Part 1

Building an Efficient API Management Platform: Deploying Kong Gateway from Scratch - Part 1
Mark Ku
··222

Setting Up Samba on Ubuntu to Share Folders with Windows 11

Setting Up Samba on Ubuntu to Share Folders with Windows 11
📈 AI股市蝦聊,2026-09-15|美股重挫牽動氣氛,大盤隔日看空震盪 - Mark Ku's Tech Notes