jrehor

5 ms·

1.
In the Shadow of Jane Street and Citadel Securities, Hudson River Mints Billions(bloomberg.com)
2 points by jrehor 10mo ago|0 comments
2.
by jrehor 11mo ago
There is a bit of nuance to the cashflow. That $100 bn cashflow was used for something else before AI: mostly share repurchases and M&A. Now it's being redirected to capex. That removes some of the support for the stock prices; the
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by jrehor 6y ago
Andreas Antonopoulos' books Mastering Bitcoin and Mastering Ethereum are fantastic. I'd recommend starting with those to get a good handle on the basics.
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by jrehor 6y ago
There are two failure modes of this strategy. 1. New information comes to light, the stock crashes, and you realize you were wrong and the stock is a dog. You no longer want to own it at the strike price. Oops. You effectively bought it abo
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by jrehor 6y ago
We did a half ass job. Everybody outside of East Asia did a half ass job or less.
6.
Amazon Wants to Train 29M People to Work in the Cloud(wsj.com)
1 points by jrehor 6y ago|0 comments
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by jrehor 6y ago
Warning: etymonline.org goes to a sketchy black hole. The correct URL is etymonline.com
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by jrehor 6y ago
The US has too much retail space. Per capita, it has 5x as much as Europe (23.5 sq ft in the US vs 3-4 sq ft in most European countries) and 8-10x as much as Asia (2-3 sq ft). We may be looking at a permanent decrease as a result of this pa
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Billion-Dollar-a-Day Crypto Trader Finds Accolades Top Anonymity(bloomberg.com)
4 points by jrehor 7y ago|0 comments
10.
An overview of Python's datatable package(towardsdatascience.com)
3 points by jrehor 7y ago|0 comments
11.
Chess Game Using Racket’s Pasteboard (part 3)(alex-hhh.github.io)
2 points by jrehor 8y ago|0 comments
12.
Pascal's Triangle in J(thatjdanisso.cool)
1 points by jrehor 9y ago|0 comments
13.
Bitcoin split is nothing to fear(bloomberg.com)
1 points by jrehor 9y ago|0 comments
14.
How we invented new ways to teach Japanese(making.duolingo.com)
255 points by jrehor 9y ago|139 comments
15.
by jrehor 10y ago
In that vein, I recommend "The Search for General Ts'o", a documentary about Chinese food in America. It's quite funny and launched me on a quest for the best General Ts'o recipe. I won't spoil the joy of the h
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Google launches a personalized travel planner, Google Trips(techcrunch.com)
4 points by jrehor 10y ago|0 comments
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by jrehor 10y ago
The Karowe mine is unusual in its high proportion of large diamonds. The only similar mine is Letseng in Lesotho. Both Karowe and Letseng have very low grade ore (in terms of carats per tonne) but high proportion of large stones. DeBeers di
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by jrehor 10y ago
Reading this must make China feel they made the right decision in banning Facebook. Not that they care about liberal v. conservative, but having their population manipulated by a cabal of Ivy Leaguers is a non-starter. The Chinese will run
19.
Racket v6.5(blog.racket-lang.org)
4 points by jrehor 10y ago|0 comments
20.
by jrehor 11y ago
Futures on FTSE China A50 index trade on Singapore Excbange and are available to US investors via Interactive Brokers (ticker XINA50). They are quite liquid. Have fun!
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by jrehor 12y ago
It is possible that a block would be sold within 350ms, but how likely is it? That's a function of block size. If you have 100 shares, you'll get it done 100% of the time. 1,000 shares? Somewhat less than 100%. 100,000 shares? Rar
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by jrehor 12y ago
I don't understand this article at all. The pension fund uses block trades. Who takes the other side of those trades and how are they compensated? I suspect that an equity desk takes the block, parcels it out into lots of small pieces,
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by jrehor 12y ago
I bought a low-end Mac mini last year, upgraded it with 16 GB memory from Crucial, installed a Samsung SSD with Fusion Drive and bingo: reasonably fast desktop system for less than $900. I guess you can do it for $800 now. The stock 5400rpm
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Electric Citibike(gizmodo.com)
2 points by jrehor 13y ago|0 comments
25.
by jrehor 13y ago
You are assuming that HFT profits come at the expense of investors. In fact, they were taken from insiders. I'm old enough to remember trading on US stock exchanges in the mid 1990s when prices where quoted in 1/8s and 1/16s