Crypto exchanges API changes update: February/March 2021

Based on trades we observe, most of the work in the infrastructure and API development by digital asset exchanges lies in the area of derivatives and margin trading.  


Binance introduced several new API end-points to manage BUSD loans. 

Sub-accounts also got a new boost with these calls:

  • Create a virtual sub-account: /sapi/v1/sub-account/virtualSubAccount
  • Get a list of all sub-accounts: /sapi/v1/sub-account/list
  • Enable BLTV for sub-account: /sapi/v1/sub-account/blvt/enable


OKEx’s push towards a unified account structure is a great development that turned into a small technological drama. 

Unified Accounts allow clients to use the same API keys and balances to trade on spot and derivative markets. In theory, it makes traders’ lives easier so they don’t have to transfer assets back and forth from wallet to wallet. From anintegration standpoint, it’s a very practical move because with V5 API we should care only about a single API key pair and connectivity. 

In reality, this transition turned into a small mess – V3 and V5 keys were incompatible, many integrations stopped working, and V3 API keys creation moved into manual mode with up to three days of waiting time. 


On Feb 28, Huobi stopped legacy v1 WebSockets. Shiny v2 with features such as client’s assigned order id, extended account, order, and balance update channels are waiting for integrators to pick it. 


Disregard all advances in technologies, people still tend to make human-related errors. Fat Finger is a well-known but still often occurring situation. It does not spare anyone – crypto traders or respectful institutional players such as Citigroup (search for the recent $900M payout of Revlon debt).

BitMEX is the place where traders make a fortune or become broke in a blink of an eye. In February, BitMEX introduced Fat Finger protection:

  • All market orders with price deviation +/- 5% from TOB will be rejected 
  • All limit orders with price deviation +/- 5% from TOB will be rejected. E.g. if you want to place a BUY order above the current best ask plus 5%, the system will consider it as an error. 

Top 5 Quant Trading and Algotrading Blogs


QuantInsti describes itself as a company that provides innovation and solutions to bridge the gap between finance and technology in the changing phase of the industry. It serves individuals, businesses, exchanges, data providers, brokers, and other technology providers to achieve their common goal of excelling in Quant & Algo trading. QuantInsti provides both paid and free services to the industry.

Free services include webinars, blogs, tutorials, and trading models, algorithmic trading workshops, events, and modules for exchanges and industry. One of the most interesting and useful resources provided by QuantInst for free is their quant & algo trading blog. You can find a great selection of high-quality articles that can be a great source of information on trading for beginners and experienced traders. 


Hacker Noon is one of the most popular blogging platforms “built for technologists to read, write, and publish”. It is an open international community of 15,000+ contributing writers publishing stories and expertise for 3,000,000+ curious and insightful monthly readers.

Hacker Noon has a relatively small number of articles on algorithmic trading, but all of them are very professionally written – 7 of them are among Hacker Noon top stories, which means that these articles were highly rated among this huge community of IT professionals. Take a look at stories with the “algotrading” tag and see for yourself. 


According to Quantpedia’s website, their mission is “to process financial academic research into a more user-friendly form to help anyone who seeks new quantitative and algorithmic trading strategy ideas”. 

A new blog post for Premium users is created once a new strategy is added into Quantpedia. Members can see all of a strategy’s characteristics and use the Screener and visualization tools to compare it to other Quantpedia strategies. All new academic research papers related to already existing Quantpedia Premium strategies are also published on their blog, but those blog posts are visible only for Premium users. Occasionally, they find academic papers related to common quantitative trading strategies. Such papers are usually described on their free blog.

Quantifiable Edges

Quantifiable Edges is a website founded by Rob Hanna, a full-time market professional since 2001. He first began publishing his market views and research in 2003. From 2003 to 2007 his column “Rob Hanna’s Putting It All Together” could be found twice a week on In 2008 Rob began Quantifiable Edges. 

This resource has been publishing quantitative research, systems, and trading ideas since 2008. Quantifiable Edges also provides unique courses for longer-time market timing and quant-based swing trading, but what you can get for free is a truly great selection of articles written by Rob Hanna himself. 

Alvarez Quant Trading

Cesar Alvarez, the founder of Alvarez Quant Trading, spent nine years as a professional market researcher for Connors Research and Cesar has been at the forefront of stock market research, having developed a number of successful trading systems now used by numerous investors and fund managers in the United States and internationally. 

Most of his posts are based on the research he is doing for his own personal trading. Check out his blog where he tests trading ideas that readers and Cesar have. The primary focus is on stocks and ETFs with a hold range of a couple of days to several months. You can get spreadsheets of the results and more. Worth mentioning is that he also posts results that did not work out. “Understanding what does not work is every bit as important as knowing what does” – Alvarez says.