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Finance sites erroneously show Amazon, Apple, other stocks crashing

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Re: Finance sites erroneously show Amazon, Apple, other stocks crashing

#92
post #69
post #16

This story isn't emphasizing an important point: the stock price of many tech companies - amazon, google, Microsoft - were pegged to exactly $123.46 for multiple hours. This is likely 123.456 rounded to 2 decimals. To me this smells like a software testing bug or hack, rather than "stocks crashing"

The NYSE did exactly the same f*ckup in 2014. And as I would expect will happen this time, the NYSE did not care because it is a bank holiday in the US, but it is not in the rest of the world, and I saw many people complaining on forums that their brokers automatically closed their positions or made big margin calls. So this is a pretty bad mistake.

There's no due diligence expected on the broker's part? Or was the accurate data simply not available to them by any means?

Re: Finance sites erroneously show Amazon, Apple, other stocks crashing

#93
post #43

Earlier quoted context omitted.

rounding

Rounding from what? 123.456 to 123.47?

maybe 2 passes? 123.45678... -> 123.4568 (4 decimal places is common in finance) then to 2 places for the retail muppets 123.46

:)

Re: Finance sites erroneously show Amazon, Apple, other stocks crashing

#94
post #69

Earlier quoted context omitted.

The NYSE did exactly the same f*ckup in 2014. And as I would expect will happen this time, the NYSE did not care because it is a bank holiday in the US, but it is not in the rest of the world, and I saw many people complaining on forums that their brokers automatically closed their positions or made big margin calls. So this is a pretty bad mistake.

There's no due diligence expected on the broker's part? Or was the accurate data simply not available to them by any means?

Well, the official price normally comes directly from the exchange. Brokers protect themselves against their exposure to their clients by reacting to the markets live. The exchange should be the authoritative source for prices.

Re: Finance sites erroneously show Amazon, Apple, other stocks crashing

#95

Earlier quoted context omitted.

Do you ever use a taxi? Because if you do, you are putting your life into the hands of someone who could be a much worse driver than you. Instead of putting your life in the hands of a terrible taxi driver, would you put it in the hands of software that is on average better than a taxi driver? You are in a taxi, so you don't get to choose to drive it yourself.

Not gp, but I would personally expect a taxi driver to be better than me seeing the amount of time the diver spends on the road. The driver wouldn't be profitable otherwise. That said, I also mirror gp in that any self-driving car must be at least better than myself for me to trust it. I imagine that's a sentiment shared by many people.

What do you mean it wouldn't be profitable?

I am not paying the taxi driver money because they are a safer driver.

I am paying them for the convenience, and the ability to not take a car with me.

Also, taxi driver incentives are wrong. A taxi driver, even though they have lots of experience driving, have an incentive to drive very quickly and therefore dangerously.

Re: Finance sites erroneously show Amazon, Apple, other stocks crashing

#96

Earlier quoted context omitted.

Do you ever use a taxi? Because if you do, you are putting your life into the hands of someone who could be a much worse driver than you. Instead of putting your life in the hands of a terrible taxi driver, would you put it in the hands of software that is on average better than a taxi driver? You are in a taxi, so you don't get to choose to drive it yourself.

Not gp, but I would personally expect a taxi driver to be better than me seeing the amount of time the diver spends on the road. The driver wouldn't be profitable otherwise. That said, I also mirror gp in that any self-driving car must be at least better than myself for me to trust it. I imagine that's a sentiment shared by many people.

What do you mean it wouldn't be profitable?

I am not paying the taxi driver money because they are a safer driver.

I am paying them for the convenience, and the ability to not take a car with me.

Also, taxi driver incentives are wrong. A taxi driver, even though they have lots of experience driving, have an incentive to drive very quickly and therefore dangerously.

Re: Finance sites erroneously show Amazon, Apple, other stocks crashing

#97
post #8
post #5

Sometimes I wonder if it would make sense to place long-term buy orders at a ridiculously low bids. Just in case.

On Bitcoin exchanges, sure. But here I think there's too much liquidity and automated trading.

Too much liquidity?

Re: Finance sites erroneously show Amazon, Apple, other stocks crashing

#98
post #3

And we trust that software can drive our cars for us?

We trust software to fly our planes and run our nuclear power stations... So what's the problem?

Those are simpler problems. There is more at stakes, but they don't have to contend with a kid running after a football.
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