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The time zone is chosen by the user on the login screen before logging in. Click more options under the login button. A menu should appear like the image below. Select your desired timezone there. If you are looking to automate the log-in/log-out process check out this GitHub repo. Be aware though that automated log in will not be possible if you have a ...


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NASDAQ opens at 9:30 AM NY time. I think of it as NY time instead of eastern standard time or eastern daylight time to avoid confusion for myself. If it is 9:30 AM in New York, the market is opening


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The time zone of returned bars is the time zone chosen in TWS on the login screen. https://interactivebrokers.github.io/tws-api/historical_bars.html


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I remember to have encountered similar problems with timezones and decided to approach the timezones in a different way with IB with my python platform (backtrader) Instead of trying to force the hand of the platform I take whatever timezone information the platform gives me and work from there to my desired timezone. The process: IB gives you the EST ...


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I gather from your question that you are looking for an accurate measure for your portfolio volatility. Keep in mind that the portfolio volatility is not equal to the weighted sum of its components and you have to estimate the correlation / covariance structure of your portfolio components. The volatility part is much easier to estimate than the covariance. ...


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(I don't have enough community points to comment, but this is not a proper answer) Do you mean implied volatility or realised? If the latter I would suggest using futures prices as each of those indices have futures that are trading live at 12:00 Berlin time. Futures tend to be what practitioners look to for the most up-to-date valuation of an underlying ...


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