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    opteron vs xeon

    That is not quite accurate, Nitro. Intel supports a feature on some server boards that they tout as processor redundancy. With this feature the second CPU is in standby, and at the time of failure the last valid state from the primary processor is copied to the standby. This is a different...
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    opteron vs xeon

    Guaranteed packet delivery? That would be pretty cool - if it existed. Who sold you that? :) You must mean an SLA, and SLAs are worth snot, IMO. -segv
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    Dual Xeon Full Usage

    Your problem is not hardware, its software. Get better software. -segv
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    opteron vs xeon

    Come again? Firstly, the failure probabilities are additive. Secondly, the multiprocessor environment has fine-grained locking and other code paths that are not a part of the uniprocessor environment. That translates to less test cycles, along with additional software and hardware...
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    Joyg

    The bot never got filled yesterday. It was working for $1.15 or $1.20 on the June 55 calendars IIRC, so it looks like that trade would have broken even. Forecast average SV for June is 44.7%, so still plenty of premium to sell here. -segv
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    Joyg

    I do not want the -gammas, but I might sick the bot on the short calendar. -segv
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    Joyg

    So uh, why aren't you short? :D -segv
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    Joyg

    Congratulations on a nice ramp in IV. When did you buy it? There was a nice discount to forecast in March and April at points, would have been a very nice long gamma ride. They announce tomorrow? Might not be a bad short towards the close. -segv
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    Joyg

    Forecast average SV with 23 days to expiration is at 45.3% and 44.9% for my two primary models, respectively. Current JOYG IV at 85.8% for a ~40% premium to SV forecast. When you said "June 55 straddle", I am assuming you mean shorting a June 55 straddle, right? -segv
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    What happened to options market during 9/11?

    Heavy drinking. -segv
  11. S

    How do market makers hedge their exposure?

    Are you licensed to transact business with the public in these securities? I am not a lawyer, but some might construe your suggestion as "dealing", just so you know. -segv
  12. S

    How do market makers hedge their exposure?

    Correlations can be very high over the intermediate term in the currency markets. This works in your favor during the process of normal market making, because you capture the delta in the average variances of the components of the basket. When news hits the market, correlations increase in the...
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    ISE options exchange proposes new, punitive rules for active traders

    How about 1,000,000 blips per second? Or 100,000,000 blips per second? Blips are not free. Blips require hardware, software, and human beings. And these blips, in particular, require a long and expensive audit trail. -segv
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    riskarb's trading journal

    I have a lot of vega exposure at the moment arb, if it makes you feel any better. :D -segv
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    Any Prop Future firms?

    VTrader in SF. -segv
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    Larry Williams arrested in Sydney for tax evasion

    Are we talking about the same Larry Williams? The guy that promoted moon cycles? -segv
  17. S

    Kinematics, Calculus, and other higher maths

    What about volatility? Volatility is a form of sentiment, and has predictable characteristics. And for math, how about probability and statistics? -segv
  18. S

    How do market makers hedge their exposure?

    I am not disagreeing with you. This is a standard approach to reducing inventory, as is changing quote sizes to favor reducing inventory. Most of the time, your inventory oscillates around zero or whatever number is your optimal inventory. However, when you have inventory risk and the market...
  19. S

    How do market makers hedge their exposure?

    .... traders go bankrupt, children bake cookies.... whatever. I left my trader jargon manual in the smoking chair at home. -segv
  20. S

    How do market makers hedge their exposure?

    Do you have a quantitative background? The discussion of market making falls under the "market microstructure theory" heading. The best introductory text on market microstructure, by far, is Trading and Exchanges by Professor Larry Harris. You can pick up the Microstructure book by O'Hara, but...
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