From Theory to Practice Series Dry Goods Article No. 3—How to Lock in Targets During Bidding and the 5 Minutes Before Market Opening (Super Dry Goods)

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It’s weekend—let’s talk about some useful experiences and insights. Today, I’ll discuss how to connect theory with practice, using this week’s real trading cases to interpret how to handle key information during the pre-market auction and the first five minutes after opening, to accurately lock in targets. I hope these tips are helpful.

All short-term traders share a consensus: the critical window is the 15 minutes before opening (auction phase) plus the first 5 minutes after opening. Many traders often stumble—either chasing high and getting caught or missing the leading stocks—mainly because they don’t fully grasp the information within these 20 minutes, failing to extract key points from chaotic order book data.
Today, I’ll break down the underlying logic—from the auction phase and the core information in the first 5 minutes, to key operational steps, and how to precisely lock in stocks to buy based on this info. This is all about avoiding ineffective actions and increasing short-term success rates.

First, a core premise: the essence of short-term trading is “going with the trend,” and the auction and the first 5 minutes after opening are the best moments to judge the “trend”—the momentum of sectors, leaders, and capital flow. Understanding these three points improves the probability of selecting winning stocks.

Part 1: Auction Phase (9:15-9:25)—Pre-judging Direction and Screening Potential Stocks
The auction isn’t just glancing at price changes; it involves systematically analyzing four core types of information, each directly related to subsequent stock selection logic and indispensable.
Remember: the core of auction is “assessing strength and weakness, identifying divergences, judging capital flow.” Don’t be misled by false quotes (you can cancel orders from 9:15-9:20; after 9:20, cancellations are not allowed, and are more meaningful).

1. Four core info types during auction (ranked by priority):

1. Sector strength: Identify the main theme of the day and avoid weak sectors
   The key to short-term profits is “picking the right sectors.” The first step in the auction is to determine which sector is the main theme for the day and which to avoid. Focus on three points:
   Check sector gainers: During auction, if the top 3 sectors by gain and within those sectors, at least 3 stocks hit the daily limit, it indicates capital is heavily involved, and the sector is strong. Conversely, if most stocks in a sector open low or hit the limit down, the sector is weak—avoid it.
   Check sector correlation: Strong sectors show “high correlation”—for example, if a sector leader hits the limit up during auction, and other stocks in the sector open more than 3% higher with no declines, it indicates strong consensus and better sustainability. If leaders open high but follow-up stocks diverge, the sector’s strength is insufficient and likely to split later.
   Check news resonance: Combine overnight news (policies, geopolitical impacts, industry benefits, capital movements). If a strong sector during auction aligns with positive news—like policies supporting green energy or chemical sectors affected by geopolitical conflicts—it indicates solid support. If there’s no news backing, just a few stocks opening high, it’s likely a trap set by big players—be cautious.
   Example: During auction, the photovoltaic sector has 3 stocks hitting the limit, others opening over 4%, and overnight news reports “Elon Musk’s company orders Chinese PV modules,” indicating PV is the main theme for the day, worth focusing on.

2. Leader performance: Confirm leadership status and sector sustainability
   A strong sector must have a leader. The leader’s auction performance directly influences the sector’s continuation and trading space. Focus on two points:
   Leader auction pattern: Prefer “one-word limit up” (no divergence), or “opening over 7%, with huge buy volume” (big capital chasing). If the leader opens within 3% and has many sell orders, it indicates uncertainty and weak leadership; the sector may weaken later. If the leader opens low, the sector sentiment is not as expected—consider avoiding.
   Leader-sector correlation: When the leader performs strongly during auction, other stocks in the sector open high simultaneously, showing good leadership and sector sustainability. If the leader opens high but others are sluggish, it’s an “isolated leader,” prone to volatility—be cautious about chasing.
   Note: Leaders are categorized as “intraday leaders” and “sector leaders.” During auction, focus on “sector popularity leaders” (core stocks with established momentum, e.g., Huadian Liaoning in power sector).

For example, on March 20, 2026, Huadian Liaoning, as a sector leader, mostly stayed at limit-up during auction but suddenly dropped at the last moment, then was pushed back to 7.21% with huge volume (155,736 lots, 95 million yuan). This indicated strong support for the sector, so I also participated in Dongfang Xinneng, expecting a potential second-day surge. But after open, Huadian Liaoning quickly diverged and dropped—this is a later story.

3. Yesterday’s limit-up stocks: Gauge market sentiment and avoid risks
   The auction performance of yesterday’s limit-up stocks acts as a “weather vane” for market sentiment. Good sentiment means more trading opportunities; poor sentiment warrants caution. Focus on two points:
   High open rate of yesterday’s limit-up stocks: If most opened above 3% during auction, it indicates hot market sentiment and active short-term capital, suitable for participation. If most opened below or hit limit down, market sentiment is weak—reduce or avoid trading.
   Breakage of yesterday’s limit-ups: If some limit-up stocks break the limit during auction (e.g., open over 3% higher after a break), it shows market tolerance. If they open lower today, it indicates low tolerance and high risk in chasing—be cautious even in strong sectors.

4. Capital flow: Find stocks with concentrated capital, avoid traps of false hype
   During auction, capital flow reflects attention and main force intentions. Focus on two points to avoid false signals:
   Check buy orders: Stocks that remain limit-up after 9:20 with large buy orders (e.g., over 100,000 lots) suggest strong buying interest and low risk of breakage. Small or decreasing buy orders indicate possible manipulation—be cautious.
   Check volume: The volume during auction (9:20-9:25) is critical. If volume ≥ 5% of the previous day’s total, it indicates high attention and potential for continued rise. If volume is low despite high opening, it’s likely “no-volume surge,” and the stock may fall back.

2. Key steps during auction (3 steps, calm and methodical):
Many get flustered during auction, missing key points. Remember these 3 steps for efficient screening:
Step 1 (9:15-9:20): Quickly scan sector gainers, identify up to 3 strong sectors (consider news), and assess overall market sentiment based on yesterday’s limit-up stocks.
Step 2 (9:20-9:25): Focus on the selected sectors, confirm leader and intraday leader performance (opening gap, buy volume, volume), and check sector correlation. Exclude sectors with poor correlation.
Step 3 (9:25): Lock onto 2-3 potential stocks (preferably sector leaders or intraday leaders with large volume and good opening gap), record their auction prices and volume, and prepare for the first 5 minutes after open. Exclude stocks with no volume or small buy orders. If you already have backup stocks, combine them with the selected ones, sticking within your candidate pool.

If your technical skills are solid, by around 9:24, you should have a judgment and decision. Some highly confident stocks can be ordered before auction ends.

Part 2: The first 5 minutes after opening (9:30-9:35)—Confirm signals and lock in targets
The auction is “pre-judgment,” and the first 5 minutes after opening is “confirmation”—many stocks that perform strongly during auction may quickly fall back (trap), while some with dull auction performance may surge after open (weak turning strong). The key is “separating false signals from real strength,” confirming the strength of stocks to lock in the best targets.
Remember: Don’t rush to buy in the first 5 minutes. Observe first, then confirm—avoid impulsive chasing. Focus on three core signals and follow a fixed process.

1. Three core signals in the first 5 minutes (confirm strength):

1. Sector sustainability: Confirm main theme, avoid divergence
   For sectors identified as strong during auction, observe their performance in the first 5 minutes:
   Check if sector gains continue to expand, and if more stocks hit the limit up. If gains fade and follow-up stocks fall, sector is diverging—consider abandoning. If gains persist and stocks rise together, sector is strong and worth further attention.
   Check capital flow: Use order book data to see if funds keep flowing in. Continuous inflow indicates support; rapid outflow suggests profit-taking—be cautious.
2. Candidate stock volume and strength: Confirm genuine capital involvement and avoid false surges
   Volume in the first 5 minutes is key:
   Look for volume expansion—if volume doubles or more compared to previous day’s total (volume ratio ≥ 2), and price rises with volume, it indicates real capital support. If price rises but volume doesn’t, it’s likely manipulation—expect a pullback.
   Check order book structure: If buy volume exceeds sell volume, it shows strong buying interest; if sell volume dominates, expect potential decline.
3. Time-sharing pattern: Find the best entry point and avoid high-level traps
   Analyze the 5-minute chart:
   Strong surge pattern: Rapid rise over 3%, with a nearly vertical line and increasing volume, indicates strong momentum. Buy on pullback to the moving average (yellow line).
   Rebound stabilization: Slight dip (≤2%), with shrinking volume, then quick recovery and stabilization above the moving average, suggests support—buy on the rebound.
   Example: On March 20, 2026, Dongfang Xinneng showed this pattern—initial high open, then a dip due to capital divergence, followed by a surge to limit-up driven by aggressive buy orders. I also placed a buy order at a strategic point, and although it dipped lower, I still gained the limit-up.

One-word limit-up opening: If the stock hits limit-up during auction but opens with a gap down and quickly recovers with increased volume, it indicates a stable leader—buy on the rebound (avoid if it keeps falling with volume).

Avoid two dangerous patterns:

• Rapid rise at open without volume support (volume-price divergence).
• Large pullback at open with increased volume and no recovery above the moving average.

2. The 4-step process during the first 5 minutes (lock in final targets):
After auction, with potential stocks identified (some already ordered), follow these steps within the first 5 minutes to precisely lock in the best stocks (stick to your candidate pool):
Step 1 (9:30-9:31): Quickly observe the selected stocks’ time-sharing pattern and volume. Exclude those with volume-price divergence or weak momentum.
Step 2 (9:31-9:33): Review the sector’s sustainability. If the sector remains strong (gains expand, funds flow in), continue; if sector shows divergence, abandon even strong stocks.
Step 3 (9:33-9:34): Compare remaining candidates, prioritize sector leaders or intraday leaders with larger volume and better patterns; exclude weaker follow-ups.
Step 4 (9:34-9:35): Confirm buy timing—buy on pullback to the moving average if strong, or on stabilization if weak, and set stop-loss (e.g., below the moving average or >3% decline). Avoid chasing high.

If experienced, you can pre-lock stocks before 9:24 based on your judgment. For beginners, it’s safer to wait until you understand the signals clearly before acting.

Part 3: Summary and Pitfall Avoidance

1. Core logic review:
   Short-term auction + first 5 minutes = “pre-judgment (auction), confirmation (first 5 min), locking (buy).” Focus on three points: sector strength, leader performance, capital flow. When all three resonate, lock in quality stocks; if one fails, abandon immediately.
   In simple terms: pick direction (sector), find stocks (leader), verify authenticity (volume, pattern), then buy—avoid greed and impulsiveness, only act on understandable opportunities.

2. Three key tips for beginners:
   Don’t blindly trust one-word limit-up during auction: some stocks hit limit-up but break it after open due to small orders or poor sector correlation. Avoid chasing blindly.
   Don’t ignore market sentiment: if yesterday’s limit-up stocks mostly open low or down, even strong sectors may be risky—manage your position accordingly.
   Don’t overtrade: aim to lock in only one stock per day. Screen 2-3 during auction, then finalize one in the first 5 minutes. Overtrading causes distraction and poor timing. Focus improves results.

Finally, short-term trading has no shortcuts. Repeated review and practice of auction and opening strategies help develop a feel for different sectors and stocks. Start small, don’t rush, and gradually increase position size as you gain confidence. Spending 20 minutes daily (15 minutes auction + 5 minutes after open) on screening and confirming signals can help you avoid most pitfalls and lock in the best trades, boosting your success rate.

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Disclaimer: This article records personal operations. Investing involves risks. Trade cautiously. The content reflects personal ideas and records, for sharing only. It does not constitute investment advice. Trade at your own risk.