It’s difficult for ordinary people to understand a policy document, and traditional financial planning is based on understanding annualized returns. However, the calculation method of an increasing term life insurance policy is Internal Rate of Return (IRR), and there’s a difference between these two – what’s the difference and why does it exist?
When funds are invested in one go, Internal Rate of Return (IRR) and Annualized Return (Annualized Return) produce the same results.
Currently, no large model stands out as particularly superior; each company has its own strengths and preferred use cases.
For feeding code or asking IT technical questions: ChatGPT and Gemini
Gather requirements and request code modifications: Claude
Backtesting requires: proportionate method (price-weighted return method), a simple explanation, and examples. Also, why cannot use add-subtract method for adjustment, and recommendations for Python historical data sources using the proportionate method.
Okay, let’s explain the “proportionate method (price-weighted return method)” in an easy-to-understand way, along with why the “add-subtract method” is not suitable, and we’ll recommend some Python historical data sources using the proportionate method.
This report aims to deeply analyze the U.S. equity options code “SST1G182500500.U,” particularly why its underlying stock code portion is displayed as “SST 1” instead of the original “SST” when sent to Interactive Brokers (IB). By analyzing the standardization structure of option symbols, related company behavior, and broker’s internal processing mechanisms, this report will elucidate the reasons behind this phenomenon and its impact on options traders.
To ensure the efficient operation and transparency of the options market, the U.S. Option Clearing Corporation (OCC) has established a standardized options symbol system known as the Options Symbol Initiative (OSI). This system employs a unified alphanumeric format to clearly encode key information about the option contract 1. Since February 12, 2010, the 21-character OSI standard has been fully implemented in the United States and Canada, replacing the previous chaotic five-character code format 1.
AI has been integrated into daily development workflows, and recent investments have shifted focus from external funds to internal stocks and ETFs.
Last week, I was bored and tried to obtain GitHub badges, starting to use the Issue module. Previously, when writing code, I always wanted to find a place to record the content of each AI modification, but creating a separate document to record it felt disorganized. Now that we have the Issue module, tagging them to distinguish between bugs, features, enhancements, etc., has made the records clear and efficient. Even if I might not need them in the future, recording them is still a form of accumulation. View Issue List
The existing communication protocol within the group uses steady_clock as a timestamp to calculate the latency for each individual node. In a specific scenario, a message packet’s built-in timestamp was used, and this timestamp originated from another machine – resulting in an anomalous latency calculation.
As a side note: Gemini2.5 Pro shows promise of completely surpassing GPT-4.
Continuing AI’s random writing, Local Comic Browser, at the end, I discovered there was no return to homepage function; I extracted the issue and fed it to AI. The solution was to add breadcrumb navigation.
Breadcrumb navigation is a common user interface design pattern typically used to help users understand their location within a website or application and provide quick paths to return to the previous level or homepage. Its name originates from the fairy tale Hansel and Gretel, where the protagonists used breadcrumbs to mark their path home.
I regularly clear out data on my phone, including photos and WeChat chat logs, backing them up to my computer. Previously, it worked seamlessly, allowing me to easily identify both my mobile phone and desktop PC within the same local network and directly back up the chat records to my computer. However, today everything has been failing.