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HolyLampshade

333 karma · joined April 9, 2015

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HolyLampshade··on Sam Bankman-Fried Convicted
Depends on the jurisdiction and sentencing guidelines, but my layman’s understanding is so that both parties have time to construct and file arguments over the severity of the sentence.
HolyLampshade··on Move Back to Datacenters
I noticed this issue a few years ago looking for COTS or OS distributed schedule/process managers to replace a home grown solution to reduce some support risk.

Turns out in the two decades I’ve been in my industry everyone else has gone to ‘the cloud’, and the tooling has gone with it. Every product or project I looked at was skewed entirely toward physical host agnostic and/or single service reliability agnostic management.

So not only is in an issue with going back on prem, there’s entirely unserviced customers that cannot adopt the tooling given the direction it’s been developed.

HolyLampshade··on The Accidental HFT Firm (2018)
It’s a little dry, but that’s by design. It is far and away the best book on the subject.
HolyLampshade··on The Accidental HFT Firm (2018)
Fully is a hard threshold to meet, but most of the US Equity markets have determinism windows in the ballpark of 1-3us. Some Futures markets have got under the 1us window, though I don’t recall exactly what the threshold minimum is there.
HolyLampshade··on Binance to acquire FTX
> Even then I don’t know if it’s allowed by regulation

It isn’t, precisely for this reason. The US Equity and Equity Derivative markets have tried a few times to get approval for initiatives using their already existing BDs (to facilitate inter-market order routing), and in every case it’s been blocked by the regulators as too risky to the underlying business.

The issue here has more to do with the lack of a centralized C&S clearing house in crypto, and is one of the reasons counterparty risk remains such a massive issue there. Having to maintain an account at each exchange, much like you would a BD, and praying things don’t suddenly go pear shaped, strikes me as insane (and is one of the primary reasons I’ve avoided getting involved in the crypto space)

HolyLampshade··on Tesla Full Self Driving Beta Causes a Crash
That’s correct. The wheel is still moving, and you are required to minimally tension it. Stronger tension will disengage the AP.
HolyLampshade··on Ask HN: Introductory Books on the Stock Market?
I’ve worked in the industry for about 15 years now and Trading and Exchanges is the first book I recommend to anyone who isn’t looking for a flashy “Invest this way and make millions” book.

Excluding some of the technical details, specifically related to US Equities, which are a bit outdated, it is hands down the best book on the subject of market participants and their interactions.

Books like Reminiscences of a Stock Operator are great as well because they provide a little historical context to market regulation and improvements to market structure.

If someone were particularly interested in clearing and settlement there is also After the Trade is Made

HolyLampshade··on Trading halted as U.S. stocks plummet
> markets are about price discovery

Exactly, and when you have an unorderly market, price discovery becomes problematic.

It’s the same reason the single stock LULD bands exist (which put the brakes on both rapid downward and rapid upward movement). Stopping for 15 minutes (or 5 in the case of a LULD pause) is not detrimental to the process of establishing orderly price discovery.

In the event a stock is going to keep rising or falling due to legitimate changes in valuation it will continue to do so (look at NASDAQ’s halts page today to see stocks that have hit their bands multiple times).

HolyLampshade··on Trading halted as U.S. stocks plummet
Mass sell offs tend to create unorderly markets, which is not beneficial for anyone.

The concept was introduced in US equities after the ‘87 crash, but was only consistently implemented for NYSE-listed stocks. In ‘13 these were made consistent and market wide (thus MWCB), set against a widely published value of the S&P (so that the control was predictable; thus how it executed today).

FYI, there are also bidirectional halts that exist intraday (Limit-Up/Limit-Down) that serve a similar purpose and control rapid, uncontrolled movements in individual stocks. These are also defined in exchange regulation and are well defined so that they are predictable.

HolyLampshade··on Goldman Sachs is spending $100M to shave milliseconds off stock trades
Usually it boils down to consolidation of liquidity. For the same reason there are well over 20 ATS venues but only a few are successful, ultimately new venues have difficulty naturally drawing resting order flow.

Market fragmentation aside, adding more price levels to set orders to disaggregates liquidity in the book, usually resulting in lower execution quantity (which increases your overall transaction costs if you’re trying to space trades out).

HolyLampshade··on The Long-Term Stock Exchange Is Worth a Shot
Since most stock ownership has become a digital ledger, there are incentives for consolidation toward central custodianship for clearing and settling of trades.

The DTC is part of the subsidiary family of the DTCC, which also operates the NSCC. The NSCC handles security clearing for almost all equities trading in the US (all transaction systems basically report here at the end of their reporting chain).

This basically allows the NSCC to simply update the ownership accounting of a number of shares, as opposed to hunting down the physical stock certificates, validating their authenticity, and then handling the transfer.

This has ultimately greatly reduced the settlement window (from Trade date + however long it takes to find the certificates, to, as of a month or two ago T + 2 days), which allows firms to free up capital (the cash doesn't exist until the trade settles) to commit to other endeavors.

A shorter settlement window (and the consolidation down to a single system), also reduce overall counterparty risk, as once the trade is settled you don't necessarily have to be concerned with the financial well being of the firm you did the trade with.

HolyLampshade··on The Long-Term Stock Exchange Is Worth a Shot
To add to this, this model only works if the entire market place operates this way. If any other venue is providing pricing updates a venue that is halted, or somehow contributing to a delay in pricing updates, is going to be left behind.

In the hypothetical "one quote a day" market, the quotes will be insanely wide to account for the risk that the natural price of product moves through the quote (with no way to provide pricing/quoting updates).

That said, I like the idea of a slower market, but, much like the debate over Maker/Taker, it will take an entire industry shift and can't be done on a single venue.

HolyLampshade··on SEC Discloses Edgar Corporate Filing System Was Hacked in 2016
I guess by surveillance I was speaking purely transactional surveillance, and typically investigations into transactional behavior takes time, and under certain circumstances would result in criminal prosecution (on top of any regulatory fines/punishment).

It also takes time to coordinate investigating multiple different asset class transactions, in the event, say, equity derivatives are used.

And no, we don’t have info on what happened and what was taken, and certainly nothing about any regulatory investigations.

HolyLampshade··on SEC Discloses Edgar Corporate Filing System Was Hacked in 2016
Well, just because this was disclosed to the public now doesn't mean it wasn't previously disclosed to Treasury, FINRA, the US Equity SROs, and the ESMA. The surveillance systems surrounding almost any market center are substantial, and can seek the sort of behavior having inside information might appear as.
HolyLampshade··on Proposed server purchase for GitLab.com
This is definitely what perked my ears up when they mentioned the US East Coast, especially when you consider the risk that a natural disaster might take out the facility.
HolyLampshade··on Proposed server purchase for GitLab.com
To that end I'd be cautious of facilities in NJ. If you are dead-set on the US, Ashburn, or even better further inland such as Chicago or Dallas, may be better suitable if you do not plan on having redundancy in another facility.

Frankfurt may be a better option solely on the basis that it is more "environmentally" stable (in terms of events that may disrupt the operation of the facility).

HolyLampshade··on High-Speed Trading Firm Deleted Some Code by Accident
Blew up the whole firm actually, and was more closely related to change management policies and systems monitoring.

The SEC order there is an interesting read for anyone involved in large scale transactional systems: https://www.sec.gov/litigation/admin/2013/34-70694.pdf

HolyLampshade··on Kaspersky Lab cybersecurity firm is hacked
Different groups in this case. According to Kapersky's report, Duqu used a zero-day to promote into kernel space, then loaded the full payload into memory. Less terrifying than the firmware revision from EG as a single attack, but Duqu was unique in that it replicated itself around in the local network, making it impossible to remove short of powering down everything.
HolyLampshade··on Ask HN: Which book are you reading these days?
Currently reading a few, including:

- The Good Spy - Kai Bird (Robert Ames bio)

- Becoming Steve Jobs - Brent Schlender (after reading Isaacson's Jobs' bio I figured another perspective wouldn't be horrible)

- Countdown to Zero Day - Kim Zetter (RE: Stuxnet and cyber-espionage)

And finally, I'm re-reading The Accidental Guerrilla by David Kilcullen (something of a social science approach to "Why do rebels/guerrillas/terrorists exist?")

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