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造市

今天約略研究了一下市場造市商(Market Making)怎麼運作的,覺得很酷!思維跟 Retails 的視角不太一樣,做點小筆記。

先講結論:

 - Market maker offer prices to buy and sell. Earn a spread.

 - Market can be either buyers or sellers, traders/investors.


一開始是看到了 Himmingbot.io 這個專案,它是 open source 的量化造市機器人,做的算蠻久的,想直接體驗的人也有 YT 影片可以先看看。

一個專業造市商的目標是:Provide liquidity while hedging market risk. And earn consistent profits from liquidity rewards.

造市,對交易者(這邊特指 Taker)的好處是:不需要找到交易的對手方,能夠直接和造市商成交。

以前在股市,造市商只有一些大機構(有錢人),如一些特許的量化基金等。通常是交易所付很多錢請他們提供流動性。

但如今,在 Crypto 市場,散戶們也能稍微體驗當造市商的感覺,如:質押 trading pair 當 LP (流動性提供者)、網格交易(一種掛一堆限價單,賺些微差, spread)之類的方法。

e.g., 

 - 「網格交易」算一種 Maker 策略,因為它 submit both bid and ask limit orders 可以理解成提供流動性。

 -  「搬磚套利」算一種 Taker 策略,例如跨交易所(或跨鏈)的方式即專吃流動性。



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