Market Making in a Thin Order Book Around a Mean-Reverting Price
Summary
The question describes a hypothetical illiquid stock whose price tends to return to $10 after moving by about $1. With sparse orders, bids no higher than $8, and asks no lower than $12, it proposes improving the best available quote by $1 to attract trades nearer the presumed fair value and capture part of the spread. It asks whether displayed volume at different price levels should change that approach.
The example introduces quote placement in a thin market, but it offers no tested strategy or evidence that the price reliably reverts, that orders will execute, or that the quoted spread compensates for inventory and adverse selection. A stated tendency to return to a price does not guarantee a predictable path or timing. The document is an exploratory question from a beginner and also asks for learning resources on high-frequency market making, taking liquidity, and cross-market arbitrage; it does not provide answers to those requests.
Key ideas
- A thin order book can have a wide gap between displayed bids and asks.
- The proposed approach improves the best quote to attract trades closer to an assumed fair price.
- Available volume at each price level may affect how quotes should be placed.
- A presumed return to a stable price does not establish the profitability or execution risk of market making.
Tags
Full text
# Market make when the orderbook has very few orders/volume in it? (price is stable at $10) # Market make when the orderbook has very few orders/volume in it? (price is stable at $10) Imagine a stock that's very unpopular, to the point where there'll only be on average 4 units of the stock at any given moment in the orderbook. This stock is also stable at a price of \$10 (meaning that the price may go up or down \$1, but it'll always bounce back relatively quickly to \$10) All bids in the orderbook are a maximum of $8. All asks in the orderbook are a minimum of $12 There's a very clear Market Making opportunity here, where I could take the best bid or best ask at any given moment. And just undercut it by \$1. I make money off of letting people buy/sell at a price closer to the mid-price. The profit I get being the size of the spread. Is there a better strategy that could be done here though, depending on the volume available at each pricing point in the orderbook? Also, would anyone happen to have any good resources for learning to market make & market take in a high-frequency scenario or Arbitrage Tading between markets? I understand distributions and statistical models pretty well, and can code, but I just don't understand the finance jargon or strategies very well. I'm quite a beginner in this field at the moment. Especially in different unique scenarios, I feel like I need to read more on different cases, and some good strategies in scenarios like the one I've given in this question. Any help would be much appreciated, thanks in advance!
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