Choosing An Exchange For Real-Time Stock Prices | Intrinio

Why are stock prices different across exchanges?

Stock prices are set by stock exchanges where stock owners put their stock up for sale and those that wish to buy stock place bids. The “ask price” is the most recent sale price offered by stock owners, and the “bid price” is the most recent offered price by stock buyers.

How do stock prices converge?

Stock prices tend to converge across exchanges because buyers and sellers of stocks can place their orders on any exchange. If the price of a stock is higher on one exchange, sellers will gravitate to it. That extra supply will lower the price. Similarly, buyers won’t pay a premium if the price gets too high on one exchange; they will migrate to another exchange.

What are your options for real-time stock prices?

Both retail and professional traders watch stock prices closely. If you want to increase engagement on your platform or website by displaying real-time stock prices, you have three main options.

What else do you need to know?

Picking an exchange is only half the battle. As we’ve touched on, you’ll also need to consider:

  • How are you going to retrieve the data? There is a huge variety of access methods — most of our clients connect over Web API to request updates as needed, or WebSocket to stream prices continuously.
  • What paperwork do you need to submit? Each exchange has different paperwork and different departments that you’ll need to contact. You’ll also need to figure out if you’re required to report users, how often you need to report them, and how you pay for each user.



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