最准确的还是yahoo finance full screen 1 D。特别关注大手成交， 特别是对于小盘股， 由于OPTION可交易性不大， block buy or block sell has significiance.
其它如TD, IB的图， 成交量对应的买卖（颜色）经常失真。
再就是看盘， 看成交价在ASK 还是bid - 这个可以用etrade MarketCaster, IB tradestation, or TD THINKORSWIM.
最准确的还是yahoo finance full screen 1 D。特别关注大手成交， 特别是对于小盘股， 由于OPTION可交易性不大， block buy or block sell has significiance.
其它如TD, IB的图， 成交量对应的买卖（颜色）经常失真。
再就是看盘， 看成交价在ASK 还是bid - 这个可以用etrade MarketCaster, IB tradestation, or TD THINKORSWIM.
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