Julia's coding blog - Practice makes perfect
From January 2015, she started to practice leetcode questions; she trains herself to stay focus, develops "muscle" memory when she practices those questions one by one. 2015年初, Julia开始参与做Leetcode, 开通自己第一个博客. 刷Leet code的题目, 她看了很多的代码, 每个人那学一点, 也开通Github, 发表自己的代码, 尝试写自己的一些体会. She learns from her favorite sports – tennis, 10,000 serves practice builds up good memory for a great serve. Just keep going. Hard work beats talent when talent fails to work hard.
Monday, February 23, 2026
Sunday, February 22, 2026
38 Candlestick Patterns Every Trader Should Know
Here is the article.
While doing Technical analysis, candlestick patterns are used by traders to predict future price movements based on historical price data. Each candlestick provides a visual summary of the stock’s price action, displaying the opening, closing, high, and low prices.
In this blog, we’ll cover the most popular candlestick patterns that every trader must know.
Friday, February 20, 2026
Orcl stock | Here's Why Oracle Stock Slumped Today (Hint: It's Nvidia Related, But Not How You Might Think)
Here's Why Oracle Stock Slumped Today (Hint: It's Nvidia Related, But Not How You Might Think)
Key Points
- Oracle stock appears to be trading as a proxy for the market's view on OpenAI's ability to raise funds.
- The market needs clarity on OpenAI's funding and Oracle's ability to meet its AI spending commitments.
Even the possibility of a $30 billion investment by Nvidia into OpenAI wasn't enough to lift Oracle stock today.
Oracle (ORCL5.42%) stock was down by more than 5% today at around 1 p.m. The move comes after some seemingly contradictory newsflow that highlighted the company's challenges and its exposure to the loss-making, cash-burning OpenAI.
Nvidia to the rescue?
As readers already know, Oracle's hefty exposure to OpenAI (the two have a $300 billion deal in which Oracle is building AI infrastructure to sell services to OpenAI) means the stock and its debt are being traded as a proxy in a debate over OpenAI's future.
Oracle's share price has tanked (down 34% over the last three months), and its credit default swaps (CDS) have soared as capital markets are growing worried over its ability to finance the capital investment necessary to fulfill its deal with OpenAI, and the latter's ability to generate profitability.
Under these circumstances, the widely reported news that Nvidia is close to committing $30 billion to OpenAI's latest funding round should be good news. However, the reality is that the figure is nowhere near the $100 billion Nvidia was previously believed to be ready to commit.
As readers already know, Oracle's hefty exposure to OpenAI (the two have a $300 billion deal in which Oracle is building AI infrastructure to sell services to OpenAI) means the stock and its debt are being traded as a proxy in a debate over OpenAI's future.
Oracle's share price has tanked (down 34% over the last three months), and its credit default swaps (CDS) have soared as capital markets are growing worried over its ability to finance the capital investment necessary to fulfill its deal with OpenAI, and the latter's ability to generate profitability.
Under these circumstances, the widely reported news that Nvidia is close to committing $30 billion to OpenAI's latest funding round should be good news. However, the reality is that the figure is nowhere near the $100 billion Nvidia was previously believed to be ready to commit.
What does it mean for Oracle?
The market's reaction highlights the company's difficulties, and Wall Street analysts are speculating that Oracle may look to sell its healthcare software business, Cerner, to improve its financial position. That said, given the pressure Oracle is under, a potential buyer is likely to negotiate hard.
All told, if Oracle really is being traded as a proxy vote on OpenAI's funding rounds, then OpenAI needs to demonstrate secure funding before investors can feel confident buying Oracle stock. Until then, the Oracle's stock and its bonds could come under pressure.
The market's reaction highlights the company's difficulties, and Wall Street analysts are speculating that Oracle may look to sell its healthcare software business, Cerner, to improve its financial position. That said, given the pressure Oracle is under, a potential buyer is likely to negotiate hard.
All told, if Oracle really is being traded as a proxy vote on OpenAI's funding rounds, then OpenAI needs to demonstrate secure funding before investors can feel confident buying Oracle stock. Until then, the Oracle's stock and its bonds could come under pressure.
Questrade do they charge interest if only trading intraday
Generally, Questrade does not charge interest for intraday trading (opening and closing a position on the same day) provided you have sufficient cash in the specific currency of the trade, as the borrowed funds are not held overnight.
- Cash Account/Sufficient Funds: If you have the cash, no interest is charged.
- Borrowing (Negative Balance): If you buy U.S. securities without sufficient USD (using CAD instead), you are borrowing, and interest is charged from the date the trade settles (T+1).
- Intraday Shorting: No borrowing fees apply to short selling if you close the position on the same day.
- CFDs: Intraday CFD positions do not incur overnight financing costs.
- ECN Fees: While commissions are $0 for stocks/ETFs, you may still be charged Electronic Communication Network (ECN) fees if your order removes liquidity from the market.
Thursday, February 19, 2026
tweezer bottom candlestick
A Tweezer Bottom is a two-candle bullish reversal pattern appearing at the end of a downtrend, signaling that selling pressure is exhausted. It consists of two consecutive candles with nearly identical lows, indicating strong support and a potential trend reversal upward. The first candle is bearish, while the second is often bullish, with, or without, wicks matching at the same low.
- Trend: Occurs during a, or at the end of a, downward trend.
- Structure: Two consecutive candles with almost identical lows.
- Candles: The first is usually a long bearish (red/black) candle. The second is a bullish (green/white) candle that fails to push lower than the first.
- Significance: Sellers cannot push the price lower, suggesting a shift in momentum from sellers to buyers.
- Confirmation: A third, bullish candle is often used to confirm the reversal.
- Entry: Traders may enter a long position (buy) after the second candle closes or once the high of the pattern is broken.
- Stop-loss: Placed below the identical lows of the two candles.
- Context: Most effective when it forms at established support levels.
The first day's, or candle's, aggressive selling pushes prices down. On the second day, sellers try again but are unable to move the price below the previous day's low, indicating strong, immediate support and a likely rebound.
Wednesday, February 18, 2026
在 TradingView 中,“锤子线”(Hammer)
在 TradingView 中,“锤子线”(Hammer)可以通过内置指标或社区开发的脚本轻松识别。以下是截至 2026 年最实用的几种方式:
- 搜索路径:在图表顶部的“指标”(Indicators)按钮中,搜索 “All Candlestick Patterns”。
- 设置方法:添加后进入指标设置,在“形态”(Patterns)列表中勾选 “Hammer”。
- 功能特点:它会自动检测符合标准的锤子线(下影线长度至少是实体的两倍,且几乎没有上影线),并在 K 线下方标注。
- Hammer Candle Finder [MQSXN]:自动扫描图表并提供高度可定制的标签和标记,可区分看涨锤子和看跌锤子。
- Hammer Detector (by deimos41):允许用户自定义影线比例(默认 2:1)和上影线限制百分比,适合对形态定义有严格要求的交易者。
- Hammer & Shooting Star Alerts:专为实时交易设计,当形态出现且满足多周期趋势对齐时,会发送弹窗或手机通知。
- 趋势确认:锤子线必须出现在显著下跌趋势之后才具有反转意义。
- 位置权重:若锤子线出现在 50 日或 200 日均线(SMA/EMA)附近,信号更可靠。
- 次根 K 线确认:理想情况下,紧随锤子线后的下一根 K 线应收盘在锤子线实体之上,这被称为“确认信号”。
- 止损设置:通常将止损单设置在锤子线长下影线的最低点下方。
day chart second day is inside the first day 如何交易
在日线图(Day Chart)中,第二天的价格范围(最高价和最低价)完全包含在第一天之内,这种形态在交易中被称为孕线(Inside Bar)。它反映了市场在经历大波动后的波动收敛与犹豫,通常像压缩的弹簧一样预示着接下来的爆发。
- 母线(Mother Bar): 第一根蜡烛线,定义了波动的边界。
- 孕线(Inside Bar): 第二根蜡烛线,其最高价必须低于母线最高价,最低价必须高于母线最低价。
- 做多(Buy): 在母线的最高价上方放置一个买入限价单(Buy Stop)。一旦价格向上突破母线高点,自动触发入场。
- 做空(Sell): 在母线的最低价下方放置一个卖出限价单(Sell Stop)。一旦价格跌破母线低点,自动触发入场。
- 常规止损: 通常设置在母线的另一端(例如做多时,止损设在母线最低价下方)。
- 激进止损: 为了获得更高的盈亏比,部分交易者将止损设置在孕线本身的另一端。
- 目标利润: 初始目标可参考母线的波动幅值,或寻求至少 1:2 的盈亏比。
- 顺势交易: 在强劲的趋势中,孕线通常作为持续信号(Continuation)。顺着主趋势方向突破的成功率显著高于逆势突破。
- 关键位置: 如果孕线出现在重要的支撑或阻力位,它可能预示着趋势反转。
- 过滤噪音: 避免在震荡行情(Sideways Market)中交易孕线,因为此时极易出现假突破。
- 多重孕线: 如果连续出现两根或更多孕线(Double/Triple Inside Bars),意味着市场压缩更剧烈,后续爆发的力度通常更大。

