https://www.wsj.com/articles/high-frequency-traders-eye-satellites-for-ultimate-speed-boost-11617289217
In the relentless quest to speed up stock trades, space may be the final frontier.
Today, high-frequency traders use microwaves, lasers and advanced kinds of fiber-optic cable to shave fractions of a second off the time it takes to execute trades. It’s a business that depends heavily on the ability to transmit data as quickly as possible between financial centers. Price moves in key markets drive fluctuations in other markets, and HFT firms must race from one exchange to another to adjust their trading activity in light of the latest data. Otherwise, they risk losing money to faster HFT firms with fresher information.
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