bfrink

6 ms·

1.
by bfrink 1mo ago
The US publishes financial statements for free on EDGAR. But then you have to parse the unstructured data, normalize it so you can compare a bank to an airline to a manufacturer and then you have to accommodate mergers and acquisitions thro
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by bfrink 1mo ago
Y latency doesn't matter if a human is looking at something. By the time your caveman-speed brain reacts, an FPGA sitting in an Equinix data center has made a hundred trades.
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by bfrink 1y ago
Seems that something's been broken. The normal way to look up ticket images manually at https://wmq.etimspayments.com/ no longer works, returning "Unauthorized" even after properly getting past the CAPTCHA.
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by bfrink 1y ago
Indirect rates are negotiated. What are the incentives for the government negotiators to get the lowest possible rate? I honestly don't know; I'd like to understand more about the underlying drivers here.
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by bfrink 2y ago
Programs like Stars College Network ( https://starscollegenetwork.org/ ) and Questbridge ( https://www.questbridge.org/ ) help to bridge this gap in knowledge. They are really good programs, based on my limited
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by bfrink 2y ago
Interesting - I have a contact in the CTLO (the real teaching-oriented group) and they have said they have no contact with the CTME and are discouraged from interacting with them. While the provost may have approved it, this whole thing is
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by bfrink 2y ago
Agree on the sensitivity wrt traditional (East Coast) media. Imagine what it takes for the president (and provost, and general counsel, and chief communications officer, and ...) of Caltech to send out an email at 8:30pm on a Sunday night.
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by bfrink 2y ago
32% of 2023 graduates had any debt at all; the average total indebtedness (over all four (or more) years) of that 32% was $15,896[0]. Not bad for a school that costs $86,886 _per year_[1]. One should also note that "[s]tudents from fam
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by bfrink 2y ago
Caltech accepts a tiny, tiny amount of transfers in total; less than ten per year. The imbalance in transfer admissions is not significant.
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by bfrink 2y ago
This (seemingly elegant) Virginia-class implementation feels like an inheritance of the Rickover and SUBSAFE philosophy. Not sure how the surface Navy would accept anything less.
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by bfrink 2y ago
At Caltech, students from families making $90K or below, will receive a no loan financial aid package (package will consist of grants and work-study).[0] [0] https://www.admissions.caltech.edu/afford
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by bfrink 3y ago
A large Great Lakes cargo vessel was recently completed by Fincantieri Bay Shipbuilding ( https://en.wikipedia.org/wiki/MV_Mark_W._Barker ). Great Lakes vessels need to be built in the US due to the Jones Act, but they a
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by bfrink 5y ago
You mean like this billionaire philanthropist? https://chanzuckerberg.com/science/programs-resources/open-s...
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by bfrink 6y ago
Value investing like Fama French HML? Value like the factor that's gotten trounced over the last decade?
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by bfrink 6y ago
Agree - real world discrete things should be modeled as such. If MPV was $0.23, then model $0.23 increments - whether you use fixed point, or the cardinality of increments, who cares. But all the other math leading up to a discrete decision
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by bfrink 6y ago
In your example, you're only a penny off if you truncate 0.199999999999999996, rather than rounding (which is described in IEEE 754!). Here's a real simple example. Let's say your model depends on the average of the last thre
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by bfrink 6y ago
This is a common misapprehension. Yes, fixed precision is great for accounting (like your bank statement) but when you're making a predictive model of asset prices (or higher moments of price distributions) being off by 1 in 10^14 is n
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by bfrink 6y ago
Calcbench ( https://www.calcbench.com/ ) does this, but as others point out, XBRL is a bit of a mess
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by bfrink 9y ago
There are about 30,000 institutionally-investable stocks in the world. They have ~252 closing prices per year. This is the thing you're trying to predict, so it forms the outputs of your training set (be sure to hold some back for out-
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by bfrink 10y ago
I think there are other wealth management-related startups that are actually changing the paradigm, e.g., Wealthfront, whereas (to the extent of my knowledge) Addepar is helping the incumbents in the space continue to capture fees in excess
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by bfrink 10y ago
I think perhaps the worst thing about Addepar is the way it sells itself to prospective (inevitably young) employees: that's it's on a mission to "fix finance." While there are some operational inefficiencies to be allev
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by bfrink 10y ago
Kaiser Permanente has just such a project: http://digitalrepository.aurorahealthcare.org/jpcrr/vol2/iss...
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Addepar Cuts Sales Staff, CMO(advisorhubinc.com)
2 points by bfrink 11y ago|0 comments