Questions tagged [betting]

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1answer
52 views

What happens to the stake of a lay bettor on a betting exchange?

As an example, let’s say you want to lay a horse at 3.40. To win £10 your liability would be £24. In other words, you are offering odds of 3.40 to someone else who is backing the horse to win with a ...
0
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0answers
53 views

How does Smarkets betting exchange actually work?

I have been wondering how betting exchanges like Smarkets actually work. If I back or lay a particular outcome, I have to wait until one other individual matches it by doing the opposite. For example, ...
1
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2answers
168 views

How much shall we bet on head/tail with $1m bankroll?

I was asked this question in a trading interview: how much would you bet in a game where you win 300 on tail and loses your 100 on heads? how much will you bet if you can play game once or multiple ...
0
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1answer
133 views

What's the expected value of a repeated game with 50% chance to win 0.5 and 50% to lose 0.5?

Assume we start with 1. In the first bet the expected value of remained balance is 1.5 * 0.5 + 0.5 * 0.5 = 1 For N times, is it still 1 according to E(XYZ)=E(X)E(Y)E(Z)? But 1.5^50 * 0.5^50 is not 1. ...
4
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2answers
221 views

What is the priority of the waiting non-matched bets, when a match becomes available in Betfair?

Say the back price (odds) on a market is $2.5$. Then the following time sequence happens: Bettor $A$ places a back bet with price $2.6$, for $\$100$ (it will not match) Then bettor $B$ places a ...
4
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1answer
186 views

How is the “probabilities sum to $1$” rule enforced in betting exchanges?

Suppose that I am interested in a market on a betting exchange for the outright winner of some event, with three competitors, $A, B$ and $C$ with corresponding probabilities of winning $a, b$ and $c$. ...
3
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1answer
1k views

Which sports are generally the best for trading on betting exchanges for a profit?

I am looking at trading bets on tennis, football and horse racing in particular as these appear to have the most liquidity. How much background research and how much trial and error is generally ...
8
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5answers
8k views

Predicting Price Movements on a Betting Exchange

On a betting exchange the price (the odds that an event will happen expressed as a decimal, 1/(percentage chance event occurring) of a runner can experience a great deal of volatility before the event ...
23
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4answers
7k views

The application of quantitative finance in sports betting

I notice that, on the surface, there are some similarities between quantitative sports betting and quantitative finance. Both have the concept of arbitraging, etc. What are the applications of ...