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I am interested to find historical news (if any) associated with intraday volatility burst in a particular ETFs like ishares IYF (Financials). So say that between 12:00 - 12:10pm, the ETF IYF's stock price is abnormally volatile. What would you suggest is the best database to search the news (if any) associated with this burst in volatility for this particular ETF?

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Briefing.com has an api and ravenpack has data as well to find news for stocks that are members of indices.

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How does that help about the ETF? – SRKX Sep 5 '14 at 4:05
It has the historical news that you can search based on tickers – Michael WS Sep 6 '14 at 3:15

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