## The "Ban" After Abnormal Stock Price Fluctuations: What Disposed Stock Investors Must Know

Have you ever encountered this situation— a stock surges dramatically in a short period, doubling in a month is not unusual, but when you actually want to buy, you find you can't or can't sell, and margin trading is also prohibited? This is likely a **disposed stock**.

## The Complete Chain from Abnormal Trading to "Prohibition"

The stock market has an automatic warning system. When a stock exhibits **short-term sharp rises or falls, soaring turnover rates, or abnormal trading volume**, the Taiwan Stock Exchange will first classify it as a **Attention Stock**—a gentle reminder, with no trading restrictions.

But if the stock continues to "misbehave," triggering the Attention Stock standard for multiple days within 30 trading days, it will be upgraded to a **Warning Stock**, and then enter the **Disposed Stock** list. This is when the real "punishment" begins—trading methods are forcibly restricted.

### Three Trading Constraints for Disposed Stocks

**First Disposition Stage**: The stock can only be matched every 5 minutes (normal stocks trade anytime). If a single buy order exceeds 10 lots or accumulates over 30 lots, **circulation trading** must be used—that is, your account must have full cash to buy, no T+2 delayed payments. Margin trading and short selling are also completely disabled.

**Second Disposition Stage**: If the stock remains volatile and triggers abnormal standards again within 30 days, the matching time extends to **every 20 minutes**, and all buy and sell orders, regardless of size, must use circulation trading. Liquidity sharply declines, and trading volume often halves.

In either stage, the disposition period usually lasts for 10 trading days, but if intra-day cancellations account for over 60% of trading volume, it is extended to 12 trading days.

### Attention Stock vs Disposed Stock: What's the Difference?

Attention Stock is just a "yellow card warning"—no trading restrictions, free to buy and sell, and margin trading is available. Disposed Stock is a "red card penalty"—trading frequency is limited, full payment is required, and margin trading is prohibited.

From an investor's perspective, disposed stocks are described as "imprisoned" or "locked down" because of these trading shackles. In December 2023 alone, stocks like Evergrande, Lishan, and Hongguang faced this treatment.

## Do Disposed Stocks Rise? Insights from Two Real Cases

This is the most concern for investors— the answer is: **it varies by stock**.

Vanguard Electronics (6756), after entering the first disposition in June 2021, saw increasing enthusiasm, then entered the second disposition, and during the entire period, its stock price rose a total of 24%. This aligns with the market saying—disposed stocks "get bigger the more they are restricted," because stocks with large gains early on tend to stabilize after entering disposition, and when restrictions are lifted, they tend to rebound.

However, Yang Ming (2609) is a counterexample. It was also classified as a disposed stock due to large gains and high turnover, but the good times didn't last. By the end of July, due to "cumulative decline over nearly 6 days," it was reclassified, and since then, its stock performance has been sluggish.

**The core difference is: the former's fundamentals support the stock price, while the latter may just be a speculative bubble.**

## How to Judge if a Disposed Stock is Worth Investing In?

Disposed stocks do not necessarily decline, but liquidity often dries up—trading volume usually shrinks significantly, and when you want to sell, there may be no buyers. This is most damaging to short-term traders. Therefore, it is generally not recommended to blindly buy restricted stocks in a bull market.

But if you believe the company's intrinsic value is solid, and the disposed status is only temporary, you can evaluate from two dimensions:

**Fundamental Analysis**: Does the company's core competitiveness remain? Are financial data (revenue growth, gross profit margin, net profit) healthy? Is the company's operational trend stable? The answers to these questions are far more important than whether the stock is disposed.

**Market Sentiment Analysis**: Because margin trading is prohibited for disposed stocks, the movement of main funds becomes particularly "clean" and easier to observe. If institutional funds are continuously buying, it could be a positive signal. The key is to observe whether the stock price consolidates during disposition (a good sign) or drops sharply (a warning sign).

**Practical Tip**: Before entering, confirm whether the stock is at a reasonable valuation and undervalued. If so, the disposition period might actually present an entry opportunity.

## Are Disposed Stocks Suitable for Long-term Holding?

It depends on three factors:

**(1) Company Risk Assessment**: Disposed stocks often hide abnormal trading, which may reflect operational issues. Compared to normal stocks, the risk is indeed higher.

**(2) Market Environment**: Holding disposed stocks in a bull market may be profitable, but in a bear market, risks increase.

**(3) Investor's Own Profile**: Short-term traders are severely affected by extended matching times and the ban on day trading; long-term investors are less affected and may even benefit from more frequent financial disclosures, allowing better tracking of the company's situation.

**Most importantly**: If you have confidence in the company's long-term prospects, temporary disposition status is not a big concern. Regulatory authorities require disposed companies to disclose financial reports regularly, which provides investors with more transparent information.

Stock investing ultimately is about investing in the company. Disposed stocks are just a temporary trading abnormality label and do not change the company's inherent quality.