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Finance sites erroneously show Amazon, Apple, other stocks crashing

marketwatch.com

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

#21

Post by pishpash »

cbanek wrote: post #7

I've actually seen a number of times where Google Finance has a daily low that was never reached or a high that wasn't shown on the graph (sometimes many percentage points away). It's also notoriously bad when there's a gap up or down, and will sometimes cut out various parts of the graph. But still, seems to be one of the better ones out there, as I still use it. Just don't treat it as authority. Another interesting…

Google Finance does not even have a working price plotter, that's pretty awful in a basic way.

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

#22

Post by dogecoinbase »

Flammy wrote: post #6
ams6110 wrote: post #3

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

Stock tracking websites don't need to be perfect, just need to be better than the humans they replaced. Faster, free, and less errors doesn't mean they must be error free. Self driving cars just need to be better than humans, and given the number of teens and senior citizens on the road...

This is true from a pure-risk perspective, but I suspect we will find that humans are far more forgiving of the errors of other humans than they are of the errors (or worse, harm-minimizing calculations) of machines.

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

#23

Post by AlBentley »

nopzor wrote: 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"

Turns out they are scraping price data, the bots must have failed!

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

#24

Post by Nition »

jfoutz wrote: post #19
Nition wrote: post #13

Earlier quoted context omitted.

Statistically that's true but realistically I wouldn't want to use a self-driving car that's only a little better than the average driver. It's one thing to have a friend that's a bad driver and another thing to ride in their car.

But they are still on the road. They're still a hazard to everyone around them. Pedestrians, cyclists, and other drivers are all at risk.

Yes but they'll continue to be on the road until they can get in a self-driving car that they can trust.

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

#25

Post by Xorlev »

kwelstr wrote: post #2

Wow, that's crazy! What algorithm did this, or maybe it's some scheme manipulation for profit? You can never be sure when something like this happens, flash stock crashes have a history that's muddy at best. :/

It's just a data feed error. The markets have not actually moved.

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

#26

Post by ams6110 »

Flammy wrote: post #6
ams6110 wrote: post #3

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

Stock tracking websites don't need to be perfect, just need to be better than the humans they replaced. Faster, free, and less errors doesn't mean they must be error free. Self driving cars just need to be better than humans, and given the number of teens and senior citizens on the road...

As someone contemplating the purchase of one, a self-driving car needs to be better than me. That's a higher bar than better than average even if it's not objectively correct.

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

#27

Post by zeeshanm »

grondilu wrote: post #5

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

Equity exchanges have cutoffs for limit prices. Even if you are able to do that you're setting aside capital that could have been used somewhere else.

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

#28

Post by krallja »

ams6110 wrote: post #26
Flammy wrote: post #6

Earlier quoted context omitted.

Stock tracking websites don't need to be perfect, just need to be better than the humans they replaced. Faster, free, and less errors doesn't mean they must be error free. Self driving cars just need to be better than humans, and given the number of teens and senior citizens on the road...

As someone contemplating the purchase of one, a self-driving car needs to be better than me . That's a higher bar than better than average even if it's not objectively correct.

This is only true if you are on an otherwise empty road.

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

#30

Post by hbcondo714 »

> The problem may have originated with data services providing Google and Yahoo their financial information

I'm sure Google and Yahoo pay a small fortune for this data so I'm wondering if they are aware of the situation and holding these data services companies accountable or not.I'm also sure these data companies sell their data beyond information sites to investment firms & others that make buy/sell decisions based on this data. Yahoo does disclose[1] that they get some data 'direct from exchange' though.

[1] https://help.yahoo.com/kb/finance-for-desktop/SLN2310.html?i...

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