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I checked the site... Do they only provide an API or can we actually download the data? It looks like they charge money for NASDAQ and NYSE. It does seem like a stretch to call it open if they charge money and only provide an API.

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> It does seem like a stretch to call it open if they charge money and only provide an API.

I agree. It doesn't look like much of the data is available for free:

http://www.opentick.com/index.php?app=content&event=mark...

Historical data should be available for free. The money you pay for real-time data is the exchange fee- ie it is paid to the NASDAQ, NYSE, or whoever. The exchanges do not allow real-time data to be offered for free.

Firms that compiled the data should sell it at whatever price the market is willing to pay. Just because the value of information tends toward zero, does not mean that the price should.

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