#我的七夕交易分享 Why Position Management Is Extremely Important (Underlying Logic)
No one can guarantee that every judgment will be correct; there are no 100% accurate signals in the market.
Even with a 60% win rate, staying fully invested and suffering several consecutive sharp drops caused by negative news can lead to a significant account drawdown, making recovery extremely difficult.
Basic math: A 20% drawdown requires a 25% gain to break even; a 50% drawdown requires a 100% gain to break even.
Avoid black swan risks. A single stock or coin can implode, an entire sector can crash, unexpected policies can emerge, or the broader market can face systemic risk. Concentrating too much in one position can severely damage your account after a single piece of negative news.
Retain the initiative to act. After going fully invested, you have only two choices: hold the losing position or cut your losses. Keeping cash allows you to add to positions at lower levels, switch to better assets, and move flexibly between offense and defense.
Overcome human weaknesses. People impulsively go fully invested after sharp rises and panic-sell during declines; position-sizing rules can strictly constrain emotions and prevent greed and fear from taking control.
The truth: In the short term, luck can make you rich through going fully invested; stable long-term profits can only be achieved through standardized position management.

#我的七夕交易分享 ETH Pulls Back 0.35% in 15 Minutes: Genesis Whale Activity Combined with Selling Pressure Weighs on Short-Term Performance
From 15:15 to 15:30 (UTC) on August 13, 2026, ETH pulled back 0.35% within 15 minutes, with prices ranging from 1883.12 to 1894.17 USDT and an amplitude of 0.58%. Overall, it continued to move within a narrow range, with a 24-hour decline of approximately 0.27%. The main driver of this move was large-scale on-chain activity from a genesis wallet that had been dormant for 11 years, with multiple early ETH wallets transferring millions of dollars in assets between July and August.
Although no actual selling has yet been confirmed, any movement by a genesis whale can trigger market concerns about potential selling pressure, creating short-term psychological pressure. Meanwhile, although ETH's staking rate has climbed to a record high of 34%, theoretically reducing the circulating supply, it has not driven prices higher, reflecting clearly weak demand at present.
In addition, order book data shows that selling pressure significantly outweighs buying pressure, with a buy/sell depth ratio of just 0.43. The total sell orders stand at 11.18 units versus 4.75 units in buy orders, while a large sell wall at $1,889.88 accounts for 50.5% of the total volume across the top five levels, further blocking room for a short-term rebound.
Improved CPI data on August 12 briefly pushed ETH above $1,900, but the lack of sustained follow-up buying caused the boost from the macroeconomic positive to fade quickly.
Technically, the 15-minute MA is bearish and the ADX has reached 30.3, indicating a certain degree of short-term downside trend strength, while the ADX on the 1-hour, 4-hour, and 1-day time frames is below 20, suggesting that the market remains range-bound without a clear direction.
In the short term, attention should focus on the $1,880 support and $1,900 resistance levels. If the genesis wallet subsequently transfers ETH to exchanges, this could confirm actual selling pressure. Whether trading volume can expand and break through the $1,900-$1,920 range will be a key signal. The current order book sample is limited, so attention should be paid to on-chain fund flows and changes in retail demand to assess subsequent market direction.$ETH ‌