📖 ZKIZ Archives

香港的證券交易所的競爭力

1 : GS(14)@2011-04-16 20:27:20

http://www.info.gov.hk/gia/general/201104/06/P201104060160.htm
評論：並無在香港阻止「閃電崩盤」，而實際上在2009年3月9 日已有已有迷你版在匯豐股票出現。香港聯合交易所並無斷路器。除了交易速度，港交所於2007年改變看法外，但自此之後並無進展。
Comment: nothing prevents a "flash crash" in HK, and indeed we had a
mini-version of this in HSBC on 9-Mar-2009. There are no
circuit-breakers on SEHK. Regarding trading spreads, HKEx U-turned on
that in 2007 and there has been no progress since then.
    

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2 : xxxlionxxx(10419)@2011-05-10 13:52:15

http://en.wikipedia.org/wiki/2010_Flash_Crash

Circuit breakers

Officials announced that new trading curbs, also known as circuit breakers, will be tested during a six-month trial period ending on December 10, 2010. These circuit breakers would halt trading for five minutes on any S&P 500 stock that rises or falls more than 10 percent in a five minute period. The circuit breakers will only be installed to the 404 NYSE listed S&P 500 stocks. The first circuit breakers will be installed to only 5 of the S&P 500 companies on Friday June 11, to experiment with the circuit breakers......On May 6, the markets only broke trades that were more than 60 percent away from the reference price in a process that was not transparent to market participants. By establishing clear and transparent standards for breaking erroneous trades, the new rules should help provide certainty in advance as to which trades will be broken, and allow market participants to better manage their risks.

咁香港細價股既「曬冷式」升跌，算唔算 flash crash.......

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3 : GS(14)@2011-05-10 14:12:45

如果有用系統的話，咁會算

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4 : xxxlionxxx(10419)@2011-05-10 14:29:28

科技日新月異，美國有大行用超級電腦可以係一分鐘做成千上萬既買賣盤，足夠左右多隻股票既升跌。唔知香港有無類似既科技，但係現行既系統，散戶比大戶舞上舞落既機會一D都唔細.....如果有個五分鐘既 circuit break，真係可以救番唔少人。至少見到唔對路，都夠時間「咁制」取消買盤..........

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5 : GS(14)@2011-05-10 14:33:02

好似可以用電腦做到盤的，有人話他們的電腦系統勁過大行

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