Email to Tradestation:
Yesterday, Friday Nov 11th, I contacted Client Services and learned that Tradestation does not make any historical price adjustments on SPY due to dividend payments. I am writing to request that Tradestation changes its policy. Technically, the historic prices have to be adjusted upon dividend payouts much like the case for stock splits. Stockcharts.com, which is possibly the most popular charting service provider, adjusts historical prices regardless of how big or small the dividends are. The ramification of not making adjustment (for the 9/16 dividend payout) is a deviation of almost $1 on the 200 day moving averages as of last Friday. My trading decisions had been misled as a result. Last week SPY’s prices bounced on stockcharts.com’s 200 day EMA twice, and I was in the dark looking at Tradestation’s 200 day EMA which was penetrated with ease. I am still devastated (stories on http://wp.me/p1jbrN-hm and http://wp.me/p1jbrN-hw) since coming to this realization yesterday. I have no choice but to switch to stockcharts.com for daily and long term charts from now on until Tradestation changes its policy.