dsacco

19 ms·

121.
by dsacco 9y ago
> It does seem counterintuitive that publicly-available information does indeed generate alpha, but the real valuable insight here is that hedge funds are able to generate alpha from using public data synergistically with private data.
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by dsacco 9y ago
Those who do the most (productive) research often don't seek any fees, because most of them don't accept outside capital :)
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by dsacco 9y ago
Most "black box" quantitative hedge funds still use massive amounts of public data, even public data that might appear somewhat obvious. They absolutely develop new insights from that data.
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by dsacco 9y ago
No, every quantitative firm uses unconventional sources of data. That doesn't meaningfully differentiate them (at least, not anymore). For example, Two Sigma has an entire division devoted to sourcing and processing "alternative d
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by dsacco 9y ago
To be clear, when you say AQR is primarily a "high frequency" firm, do you mean they are mostly position neutral with execution in (at most) a few microseconds?
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by dsacco 9y ago
The market isn't efficient. But more importantly, SEC filings are not the only data these firms use. It's just one source for which these researchers were able to capture access information. Comparatively speaking, the SEC filings
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by dsacco 9y ago
Yes, Renaissance runs everything on its own infrastructure (as do most firms of that caliber, and even a tier below). That said, many of these firms also ingest data from aggregated sources, so their research would activity be very difficul
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by dsacco 9y ago
Renaissance Technologies has completely automated the process of signal discovery.[1] They don't hire researchers to manually derive novel insights or trading models from data, and they don't really bother with exclusive sources o
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The Octonians (2001)(math.ucr.edu)
1 points by dsacco 9y ago|0 comments
130.
by dsacco 9y ago
Ben Thompson mentioned this article in this morning’s Stratechery. It raises an interesting point that Facebook (and Zuckerberg in particular) may be using the Cambridge Analytica public backlash to justify locking down their data even more
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Mark Zuckerberg Finally Speaks About Cambridge Analytica(techdirt.com)
1 points by dsacco 9y ago|1 comments
132.
by dsacco 9y ago
> If you have a serious level of concern about your employees doing something illegal then why are they your employee in the first place? Because “we don’t hire criminals” is not sustainable, just like “we only hire the best engineers”
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by dsacco 9y ago
It doesn't contradict what I'm saying. If you mean the Romanian case, the ultimate resolution was that 1) an employee has an expectation of privacy for personal communication on personal channels on a corporate machine, and 2)
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by dsacco 9y ago
It doesn't make sense to refuse solutions that solve part of the problem, or that make the problem more manageable. Perfect is the enemy of good.
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by dsacco 9y ago
By blob I mean an archive dump of every message and the metadata you're describing. If that dump is hashed, selectively presenting messages in the dump is obvious.
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by dsacco 9y ago
> You're being intellectually disingenuous. Okay...let me see if I understand you correctly. You're defending the other commenter's description of corporate logs as totalitarian surveillance , but you're saying tha
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by dsacco 9y ago
> And workplaces are socio-political contexts They're not governments, they're companies. > monitoring channels that even just imply privacy, regardless of whether they take place in the workplace (or in academia, or at h
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by dsacco 9y ago
> You might not want them to know you're reviewing it but they most certainly do want to know that you are. Of course they want to know. Everyone wants to know. But if they committed a crime, or at least are complicit in a lawsuit
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by dsacco 9y ago
> but your chosen solution is totalitarian surveillance in the workplace because an intern got offended? Sigh Totalitarianism is a socio-political paradigm, not a stand-in word to describe things you think constitute surveillance i
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by dsacco 9y ago
> Not sure how much compliant this is with the law, but in this case the law should be more protective towards employees. This change is precisely because of regulations like GDPR, among others.
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by dsacco 9y ago
What is the material difference between having employees save DM logs in an auditable, authenticated way and being able to view employee DMs? If any employee can ostensibly be compelled to provide their logs when asked by their employer, yo
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by dsacco 9y ago
While I agree with auditable access to employee DMs, there is a middle ground solution that trivially solves the problem you've presented. Instead of providing the employer with access to the employee's messages directly, logs can
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by dsacco 9y ago
Yes, agreed. My point was to basically say that priors (as a form of redundancy) do not undercut the sampling theorem.
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by dsacco 9y ago
> The NYT just published a graphic that purports to show the location of the vehicle and the victim: Emphasis on ”purports” . The NYT graphic doesn’t indicate the vehicle was in the right lane, nor does it indicate a precise locatio
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by dsacco 9y ago
Yes, this is a serious abuse of headline on both counts. Mods, can we change the title on HN? It’s a significant misrepresentation as it stands.
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by dsacco 9y ago
I think that’s because the comment is ambiguously distinguishing between academics and engineers or lumping them together.
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by dsacco 9y ago
> People are able to interpret speech under very high levels of noise due to having strong priors / being able to guess well / having shared state with the speaker. In the information theoretic sense, this just means there is
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by dsacco 9y ago
No you aren’t. (Well, you could be, but not because you can’t follow this). On any given article with a lot of technical content, it’s reasonably safe to assume that it’s on the front page of HN because a lot of people are enthusiastic abou
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by dsacco 9y ago
This is great, but I’m disappointed Backblaze B2 isn’t included. That seems like an oversight unless someone can point out how B2 doesn’t hold its own with these options in a glaring way. There are tradeoffs, but B2 seems to be very competi
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by dsacco 9y ago
I backup all my data to a local SAN, Backblaze B2 and Google Drive. Restic encrypts and deduplicates all data on the client before uploading it to the cloud.

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