4 ms·

any decent trading system. When millsecs mean the difference between millions of dollars, having a trader type in all those zeros, then count them, would be co

any decent trading system. When millsecs mean the difference between millions of dollars, having a trader type in all those zeros, then count them, would be costly time. Fast traders don't click on icons and enter values, they enter an entire trade on one line. Buy 1000 shares of Apple computer at 250.05 might be entered as: buy1000aapl250.05

wr1472 17y ago
fair point, not in finance so didn't consider this. However I find it extremely foolhardy that mistyping one character has an impact one thousand times greater, and that such an action can be performed without some kind of validation (whether explicitly via a confirmation, or implicitly in how the UX is designed). Then again it is probably because of the typo risk that bankers get paid so much ...
- prewett 17y ago
  `rm -rf` vs `rm -ri` could have that sort of impact. Or `sleep 1; shutdown -r now` vs `sleep 1h; shutdown -r now` to reboot the production server. I once deleted all my source code instead of backing it up to my floppy by doing "del ." while command.com was in wrong drive. (Should have done "del a:\."; two letters cost me a night of running an undelete program)
  - metamemetics 17y ago
    I like my Bash tools as much as the next HNer, but always think it's faster, safer, and more accurate to use a windowed gui for moving or deleting important files and folders.
eekfuh 17y ago
So what you are saying is they type it in with zeros. Maybe you should have had an example not contrary to what you said.
jacquesm 17y ago
That sort of command line looks like a recipe for disaster.
- gaius 17y ago
  You should see the command lines the Navy uses for targetting (I'm not kidding).
wglb 17y ago
I don't think we are doing millisecond-resolution trades by hand.
BrentRitterbeck 17y ago
I worked as a trader, and I can confirm that this is not the way trades are hand-entered.
- blantonl 17y ago
  ....on your platform.
  - BrentRitterbeck 17y ago
    ...on my platforms. Text based systems: FBSI, SIS GUI based systems (when not pointing and clicking): Patsystems JTrader<A>, Trading Technologies' XTrader<A> <A> These are systems I have used for personal use but not at work
  - Nekojoe 17y ago
    I agree with this. Each platform can be completely different. Banks often have their own internal platforms too. Some are even set to trade in millions by default. So when you enter an order for 15 shares, you're really buy 15 million shares and so on.

wr1472 17y ago

fair point, not in finance so didn't consider this. However I find it extremely foolhardy that mistyping one character has an impact one thousand times greater, and that such an action can be performed without some kind of validation (whether explicitly via a confirmation, or implicitly in how the UX is designed). Then again it is probably because of the typo risk that bankers get paid so much ...

prewett 17y ago
`rm -rf` vs `rm -ri` could have that sort of impact. Or `sleep 1; shutdown -r now` vs `sleep 1h; shutdown -r now` to reboot the production server. I once deleted all my source code instead of backing it up to my floppy by doing "del ." while command.com was in wrong drive. (Should have done "del a:\."; two letters cost me a night of running an undelete program)
- metamemetics 17y ago
  I like my Bash tools as much as the next HNer, but always think it's faster, safer, and more accurate to use a windowed gui for moving or deleting important files and folders.

eekfuh 17y ago

So what you are saying is they type it in with zeros. Maybe you should have had an example not contrary to what you said.

jacquesm 17y ago

That sort of command line looks like a recipe for disaster.

gaius 17y ago
You should see the command lines the Navy uses for targetting (I'm not kidding).

wglb 17y ago

I don't think we are doing millisecond-resolution trades by hand.

BrentRitterbeck 17y ago

I worked as a trader, and I can confirm that this is not the way trades are hand-entered.

blantonl 17y ago
....on your platform.
- BrentRitterbeck 17y ago
  ...on my platforms. Text based systems: FBSI, SIS GUI based systems (when not pointing and clicking): Patsystems JTrader<A>, Trading Technologies' XTrader<A> <A> These are systems I have used for personal use but not at work
- Nekojoe 17y ago
  I agree with this. Each platform can be completely different. Banks often have their own internal platforms too. Some are even set to trade in millions by default. So when you enter an order for 15 shares, you're really buy 15 million shares and so on.