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The $440M software error at Knight Capital (2019)

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Re: The $440M software error at Knight Capital (2019)

#141
post #108

Earlier quoted context omitted.

When FB took it's huge hit I saw people using MANGA. But again if we drop the N...not great.

FAGMAN is still my favorite.

Typical edge lord naming from r/wallstreet bets, thats where this originated from wasn't it?

Same as FAANG to FAAG, shocking but a touch funny.

Re: The $440M software error at Knight Capital (2019)

#142
post #62

Earlier quoted context omitted.

I’m curious about the “repurposed flags” part. I wouldn’t think of flags as expensive / effortful to make more of, but clearly they must be if people are tempted to reuse them. Can you help me understand what is meant by a flag in this context, and why it would be repurposed?

Repurposing flags not always well-motivated, but one legitimate reason to do this is the memory (and particularly cache) footprint. Often flags are local to a particular object. If there are lots of such objects, you want each to take as little space as possible. You should check out the contortions linux devs go through to make struct page small [0]. This is important, because there is one such struct per page of ph…

This is what I thought as well, and I'm in the field. It's legit to try to fit everything in cache.

However, you can still do something about making this safe. For instance the program could do some sort of version check on startup and panic if things weren't correct.

There's a bunch of stuff that needs to be done before the program reaches its low latency steady state, where speed doesn't matter. Might as well add checks there to make sure things are correct.

Re: The $440M software error at Knight Capital (2019)

#143
post #58

Earlier quoted context omitted.

Why pay more than market rate of a replaceable ML person? Is there any realistic path for a demonstrably smart and hardworking person into that 7+zeros club? Evidence suggests no: leetcode grinders and FAANGers are not in that club, and most of them will never even make it into the 6+zeros club. Net wealth -- sure, but not income.

It's all about making $$ for the firm. If the strategies developed are very profitable then 7-figures is definitely reachable for the researchers at a prop trading firm.

7 figs is 6 zeroes in his lingo, right? My man is looking for 8 figures.

Re: The $440M software error at Knight Capital (2019)

#144

Earlier quoted context omitted.

One difference is that we don’t have “round brackets” over here, only parentheses. (We do have “square brackets” however.)

brackets are for squares. Peace, man!

squares are for brackets.

Re: The $440M software error at Knight Capital (2019)

#145
post #119

Earlier quoted context omitted.

Chiming in as someone who has lived decades in both South East US and North East US. I've also never heard () called "brackets" only "parentheses". This includes in and out of programming circles. I assumed the comment saying "parens: ()" was talking about US, but the replies seem to be interpreting the opposite.

Never? You guys don't use the BEDMAS acronym in grade school for teaching order of operations? I've only ever called them brackets.

Yeah, never. PEMDAS for sure. What part of the country were you in where you got BEDMAS?

Re: The $440M software error at Knight Capital (2019)

#146

> However, a dark cloud remains: market data suggests that 70 percent of U.S. equity trading is now executed by high-frequency trading firms Is it just me, or was this one of the scarier statements in the article? High frequency trading does not seem to add anything, it's not a market instrument to balance anything. It's more like gambling with the odds slightly in your favor. Oh course, I'm a laymen when it comes to…

Market makers provide cheap liquidity. Or in other words, compare the total transaction costs (bid-ask spread + commission) you would to pay today to trade 100 shares of stock today vs 30 years ago. The difference is staggering.

Re: The $440M software error at Knight Capital (2019)

#147

My experience in quant finance is that strong engineering teams are viewed as cost centers and are not well compensated the way they are at “real” tech companies, especially when the firm isn’t doing well. Management foolishly tends to only value seeking alpha, rather than reliability of existing alpha. Unsurprisingly poor management tends not to realize when their software is built on a house of cards. Definitely sa…

Feel like this way more of the case in the past than it is now. Engineers at top prop shops today are compensated more much generously than at all but the most senior engineers at a FAANG. For example, word is that new grad hires at Jane Street are getting first year guarantees at around the 450k range, which is much higher than an entry level engineer at a FAANG would make.

Culturally, there's some truth in what you say though I think: alpha generators are probably more respected and are pulling more TC in good years.

Re: The $440M software error at Knight Capital (2019)

#148
post #61
post #45

Earlier quoted context omitted.

Yeah, pay at the big banks is shit really, especially when you consider the utter lack of work/life balance. I left in 2013 making 150k, which was supposed to be supplemented by a ~40% bonus for the level I was at, but each year was "well its been a tough year..." and after getting a token amount one year, and then zeroes the next 2, after working 50-60 hour weeks, I was like I am not only done with this place, but t…

I spent a few years at an investment bank, not in the US, and the only people on serious money were some of the top managers. But my overall opinion of these people were that they did very little but the lower downs I met were some of the most talented people I ever worked with. The top ones would spend all their time traveling the world to the offices and meeting with staff in each location and the sending emails to…

Probably there were many ideas.

Re: The $440M software error at Knight Capital (2019)

#149
post #131

Earlier quoted context omitted.

Never? You guys don't use the BEDMAS acronym in grade school for teaching order of operations? I've only ever called them brackets.

BODMAS for us...

BODMAS for me too, although the "O" always confused me, the "E" standing for "exponent" always made more sense to me than the O" standing for "[to the power] of"

Re: The $440M software error at Knight Capital (2019)

#150

Earlier quoted context omitted.

I’ve seen MAAM being used.

When FB took it's huge hit I saw people using MANGA. But again if we drop the N...not great.

GAMMA works if you add back Microsoft, who are doing better lately.
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