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j_lev

263 karma · joined October 3, 2014

Bounced around some securities firms/banks for 10 years or so whilst in Japan before heading back to Australia. https://jp.linkedin.com/in/justinlevinetokyo
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j_lev··on Wealthfront: Silicon Valley Tech at Wall Street Prices
Good one. Forgot about this one.

Intelligent Investor is good too as per other commenter but I find that it's quite hard reading for a beginner.

j_lev··on Wealthfront: Silicon Valley Tech at Wall Street Prices
In typical chicken-egg fashion there is no better teacher than having skin in the game, but just make sure you know what you're doing before you jump in.

Personally I tend to encourage people to read Bogleheads' Guide to Investing first. That should equip you with everything you need in order to get your feet wet.

Then, while you're checking your investments every day (exactly the way the book tells you not to do), start to read as much as you can about Permanent Portfolio. The reason I recommend this is because it allows you to learn the theory of (and indeed watch, if you decide to build your own Permanent Portfolio) different asset classes, and how they move depending on various macroeconomic factors.

Finally, if you want to start stock picking I'd recommend getting started with Peter Lynch's books.

j_lev··on How Goldman Sachs Helped Greece to Mask Its True Debt (2010)
http://faculty.chicagobooth.edu/anil.kashyap/research/papers... this recent summary is the best I have seen in the last couple of days.
j_lev··on Australian senate passes controversial anti-piracy, website-blocking laws
Looking forward to seeing how technology renders this law ineffective.
j_lev··on Identifying Arbitrage Opportunities with Graphs
Essentially the assumption that prices are set efficiently does not hold for FX. Errors in pricing can occur, and when there is an arbitrage opportunity and a market maker loses money then it is assumed (possibly) due to a pricing error which the arbitrager shouldn't have taken advantage of.

A bit of history how the messaging protocol works might make things clearer.

In the old days a trade would take place over the phone as follows:

You: "I'd like to buy USDJPY, $1 million worth please" Market Maker or broker (MM): "Ok you can get $1 million dollars worth for 123"

At this point there was a gentleman's agreement you would respond within 4 seconds whether you want that price or not (as the market may move)

You: "Mine, I'll take it"

Here you have completed your side of the contract and cannot back out. You just need the MM to confirm that they can still get your USDJPY 1 million 123 (this was traditionally confirmed with a trader sitting nearby who could see all the prices and volumes being published in the market and could give a price at which they could hedge the entire volume and still make a profit. These days traders still perform this role to a small extent but generally the broker would read a price off a screen themselves).

If they can, MM: "It's yours, USDJPY 1 million at 123" and the transaction (contract) is confirmed good. The position is transferred to you, and the trader who provided the original price hedges the risk and gets out of the position, flattening his trading book.

If the market has since moved and the trade is no longer profitable, MM: "I'm sorry the price has changed, you can now buy at 123.1" and you jump back up to the previous

Ok, so all this has been upgraded with technology over the years, specifically messaging is now done via the FIX protocol (same as is used for other asset classes). But the basic flow is still the same:

You: Request price at a quantity MM: provides price You: decide whether to take that price MM: confirms that the price is still good, then sends you confirmation the trade was good (and hedges the trade), or otherwise rejects the trade.

The issue arbitraging causes is that if the prices in the market move and those moves are known to the arbitrageur but not to the market maker then the market maker gets into a position where they accept and confirm the trade, but can't hedge out at the price they thought they could, and so lose money on the trade. A few of these trades and the losses start to build up, and if it keeps happening with a certain client (remember, no anonymous exchanges here) then it's easy to punish that client (show them worse prices, cut them off completely, etc). If an arbitrageur is hiding behind a third party then the market maker might have enough clout to punish the entire third party (in which case it would be in the third party's interest to seek out the arbitrageur and punish them themselves).

j_lev··on Identifying Arbitrage Opportunities with Graphs
Doesn't take into account the fact that FX is "last look" for the provider of the liquidity and so any one of the transactions along the way could be rejected. In fact even if the trade wasn't rejected at the time of transaction, the liquidity provider could come back later and request a particular trade be reversed or manually adjusted as it was unprofitable for the liquidity provider.

Also doesn't take into account that in FX specifically, arbitraging is heavily frowned upon and if you are caught you are likely to have your account closed down.

The reasons for both of the above is that unlike for commodities/equity/futures/etc which are traded on a market, FX is more like a "gentleman's wild west" ie no defined market rules, but a lot of unofficial gentlemans agreements in place about what you can and can't do.

Various exchanges have tried to offer a standardised FX product and they all have the same issue - because a transaction on an exchange doesn't allow "last look" provision and the market makers have to honor the transaction, once an arbitrager infiltrates the market the market makers are basically at the mercy of the exchange (and all the latencies and rules within) and are forced to widen their spreads to the point that it no longer an attractive marketplace for all other market takers.

Having said that, arbitragers still do exist in FX. The most (in)famous one in Japan is a guy "Arb-san" who was making a motza in the countryside in Gifu. He had a great blog where he uploaded photos of his cars and piles of cash and trading rig, and commentary of how he was sticking it to the dumb banks. Unfortunately I can't find this blog anymore, but I did manage to find a profile of someone with the same name online that has some cars that I recognise from the that blog:

http://minkara.carview.co.jp/en/userid/1956440/car/

j_lev··on Losing it All
I've found that whether they mean it or not, friends are often good for a place to crash until you actually need it. There's always a reason they can't let you stay.
j_lev··on Losing it All
Any chance you could put together a video of yourself explaining to people you were homeless? You seemed to get really good responses from people, and I'm intrigued as to whether there was something special about the way you presented.
j_lev··on Five Big Banks Plead Guilty to Rigging Currency Markets and No One Goes to Jail
Absolutely. Even today, you can't compare it to other markets where execution takes place on an exchange. "Honor among thieves" is the expression that comes to mind when talking about FX.
j_lev··on Wall Street's New Financial Product: Your Rent Check
The entire article is all over the place.

> But what if the security blows up? Investors could demand their collateral back, forcing renters out of their homes, even if they never missed a payment. "We could well end up in that situation where you get a lot of people getting evicted—not because the tenants have fallen behind, but because the landlords have fallen behind," says Baker.

At the risk of invoking the "j_lev Law of Eating Hats" I can't see that happening. There is ONE private investment company which has a loan with ONE bank. Investors pull out, the size of the loan just increases by that amount. All the investors pull out and Blackstone Group is left with a lot of (high-yield) property and a large loan with DB. Worst case scenario the properties are sold (potentially at a loss, but the remaining loan is still the problem of Blackstone Group and DB).

j_lev··on Join the Engineering Leisure Class
YNAB.

The developers are a bit accounting-nerdy, and it has lots of graphs/etc which I think would appeal to the HN crowd.

It's also very flexible. One example I can think of, my friend installed it on his wife's smartphone so she could record spending on groceries wherever she was. But my wife doesn't like this level of monitoring so I just give her a wad of cash each month and enter that as a general "cash for groceries" entry.

I've also seen people in the US say good things about Mint.com, which was not available to me here in Japan.

Normally this would be a good place to put my own 10%-off referral link. Instead I'm going to give a link to a forum thread where you can get 10% off AND someone else will then use your link:

http://forum.mrmoneymustache.com/reader-recommendations/43-d...

j_lev··on Join the Engineering Leisure Class
Hi - thanks for sharing and congratulations - sounds like you've made things work.

> I spent Fridays working on a cool idea my brother and I had. That idea proved useful enough to pay the bills so I quit my job.

Regarding this, it sounds like you already had a good idea of what your expenses were, and I think people underestimate how important this is.

I recently quit my job and have jumped into the unknown. Firstly knowing where all my money was going, and secondly spending about 12 months trimming off all the fat was an important part of the process to give me the confidence to try this. These days I live in one of the most expensive cities in the world with my wife for about $2000/month (and over half of that is rent). We want for little. Several years ago this figure was closer to $4000/month.

j_lev··on A multiplayer Tron-like game with curves
It's as hard for the person with the dark colour as it is for everyone else. Most people are reasonable if you ask them to change their colour, too.

Otherwise you can kick them between rounds.

j_lev··on Talking About Money
Oh crap I just realised I had the wrong parent for this. Sincerely sorry for the confusion.
j_lev··on Talking About Money
In the original post Patrick already touched on the Japan case, but one thing I'd add is that one of the pieces of paperwork you must hand to your new employer is your final tax slip from your previous employer showing how much tax you have paid in the current year. From there it's trivial to calculate your previous salary.

There are ways around it but it seems most people go with "my base was XX.... and that's one of the reasons I'm out there looking to change jobs."

j_lev··on Singapore's Smart Nation Minister
Singapore's sovereign wealth funds Temasek and to a lesser extent GSIC have been going on a bit of a tech buying spree in recent months. If you're a tech startup in the region looking for funding these guys would be your first port of call.
j_lev··on Lake Michigan Is So Clear Right Now Its Shipwrecks Are Visible from the Air
Meanwhile I'm geeking out over the number of things Ghostery blocked on the site. 38 - that'd have to be a record.
j_lev··on The days are long but the decades are short
These days you'd just be suspended and accused of sexual harassment.

http://edition.cnn.com/2013/12/11/living/6-year-old-suspende...

j_lev··on Ask HN: Those who quit their jobs to travel the world, how did it go?
Yeah, I just finished writing mine and was thinking the same thing. The bad points for me were 1) I completely decimated my savings, 2) I had no health insurance and didn't realise why this was a bad thing, 3) I got frustrated at times with the fact that "van-dweller with no fixed address" is not apparently a draw card with the ladies.

Fortunately "inability to connect with people" wasn't an issue for me. But I stayed out of the big cities for the most part, and a clean-shaven face and mischievous smile can go a long way in getting conversation started.

j_lev··on Ask HN: Those who quit their jobs to travel the world, how did it go?
I lived in a van for about nine months while traveling around Japan.

I lived primarily off savings, though I worked for three weeks at a beer garden over the summer, two weeks washing dishes at the Sumo in Tokyo and did some consulting work here and there for previous clients.

Once you find your groove it's easy. For me, it was 1) from about 6pm try to find a place to shower, then a place to park. 2) spend about an hour planning the next day's activities. 3) get into some sake, read some comics, then sleep. 4) wake up early enough and move on so that no-one notices you just camped there overnight. Head into town and start sight-seeing.

Fortunately it was 2007 when I came to Tokyo to look for "proper" work and there were all these jobs supporting these people working in something called "sub prime mortgages"...

I was 27 at the time. Still here almost 10 years later though I live in an apartment now. Next month I'll be heading back to Australia to work on a few projects and the thought is a bit daunting. It was much easier at 27 to quit the job and pack it all up, but I think having the experience under my belt makes it easier the second time around.

Second time around will be more like what you describe above, the "quit your job and into the unknown." My tips (as much for you as for me) from doing it once are 1) less is more when it comes to luggage. If I didn't have to work I'd probably go entirely bagless (see: Scottevest) or close too it. 2) A lot of it comes down to a few simple requirements that need to be taken care of every day. Once you have these under control your mindset changes in ways that could fill a blog post on their own. 3) For many hiring managers, a year traveling on your CV is poison. That's their shortcoming, not yours. 4) Consider doing "local" jobs while traveling. I was working and being paid minimum wage but loved every moment of it, and I still keep in touch with my colleagues from those experiences (I've since worked at a bean-sweets factory and a hot spring resort, another stint at the Sumo, and there was a hotel somewhere in there too). 5) The more food prep you're prepared to do the more you can save. If I knew there was a market nearby I'd be up at the crack of dawn jostling with the old ladies for discounted local produce. I learnt and employed time-tested methods for preserving food (salting, spicing, fermenting, drying, etc) or bought from markets pre-preserved (I spiced and dried some meat hanging in my car one time while on the freeway with my windows open. The drag probably cost me more in fuel than I saved by being able to buy the discounted meat lol). I had several go-to meals, and became a master of one-pot cooking. Worst case I would go without, or spend a buck getting some cheap calories from the convenience store. 6) Talk to people. Everyone has a problem they need solved, and you might be the person to solve it. Maybe one thing leads to another and you have a source of income for a while, or more. All of my part-time jobs above bar one came from introductions from people I had spoken to or worked with along the way. Often you can bring a unique perspective, or worst case you learn something yourself.

j_lev··on High Frequency Trading on the Coinbase Exchange
I am saying that if you're a self-styled market maker but only bidding for the 99.9% of the time when the market isn't in free-fall then the "social utility" claim is dubious.

People who place stop-loss orders would not do so if they were faced with an order book with no bids. However this is effectively what happens when the market starts to drop and the bids are all pulled.

j_lev··on High Frequency Trading on the Coinbase Exchange
> Market-making also delivers real social utility. The deeper the liquidity provided by market makers, the more difficult it is to cause erratic spikes in price. Market makers also reduce the bid-ask spread, a concept most people aren’t even aware of: a testament to successful practitioners on Wall Street.

Until they don't. The moment people need liquidity the most is the moment the market makers have pulled all their orders and the market is in free-fall.

j_lev··on Ask HN: How do I find a mentor?
This has always been my approach too. I'd add that if they make suggestions (eg "You should read xxxxx book") then the best thing you can possibly do at that stage is go out, read the book or whatever, come back and tell them what you thought of it.
j_lev··on Show HN: I'm a 14 year-old dev who has programmed an artificial intelligence bot
> I actually do not think japan is a very nice country. By the way, I've heard that Japan is a very nice country.

Most of the "conversation" was about this level.

j_lev··on Unit tests fail when run in Australia
Put another way, it's taking advantage of light hours in the morning that are otherwise wasted sleeping. In Tokyo it's light outside from 4am in Summer, if you can instead have an hour of that in the evening then that's an extra hour people don't need to turn on their lights.
j_lev··on Unit tests fail when run in Australia
I used to work at a phone company in Australia. DST was the pits. Think a five minute call where the caller drives across state lines, from a DST-observant state to a non-observant state. Timestamps come from the base station through which the client's phone is connected. several weeks later, client is furious that they have been billed for an hour and five minutes (back when it was expensive).

Every time we switched to or from DST there were a couple of outliers that got caught. We'd update the tables to handle the case correctly next time, but would miss something else, if the change didn't break something else completely.

j_lev··on We Should Have a Better Condom by Now
Japan has had polyurethane condoms as standard for at least 15 years (indeed there is the stereotype of foreigners stocking up on latex ones whenever they go home).

Polyurethane is definitely superior in many regards, but they are less stretchy than latex and if you're not used to them they can be a little frustrating.

j_lev··on Living with a Computer (1982)
If those prices are 1982 prices then you can multiply by about 2.5 to find out what they'd be today.
j_lev··on Ask HN: Do you take nootropics?
Piracetam/choline/caffeine stack for about six months.

Would like to do another course at some stage. Mind was massively productive and I fleshed out several ideas over the period. Also got rid of the "mind fog" that starts to creep in from around 30 years old onwards.

j_lev··on Sirum (YC W15) Recycles Unused Medicines to Save Money and Lives
I didn't realise the situation with throwing out medicines was so bad in the US. For comparison, pharmacies in Australia have always been a place where you would return unused medicine, where it is destroyed (some medicine just cannot be reused), reused or shipped to developing countries (used to be able to send recently-expired medicine that was still effective but I think I read this was no longer the case)
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