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Matt Levine has an entertaining piece in Bloomberg View on how all those brokers lost all that money when their retail speculators were losing their shirts:
Imagine being a retail foreign-exchange broker and letting your customers day-trade Swiss francs with lots of leverage. How much leverage would you feel comfortable giving them? Well, if daily moves are typically less than 0.1 percent, then that means that 95 percent of the time their positions will move by less than 0.2 percent in a day. So if you required 2 percent margin -- that is, you demand $2 of cash from them for every $100 worth of Swiss francs that they trade -- you'd feel pretty safe. That would mean that, 95 percent of the time, customers couldn't lose more than one-tenth of their equity in a day -- so if they lost money and skipped out on you, you'd be able to liquidate their positions without getting close to losing any of the money you'd lent them.

On the other hand when the euro/franc moves by 19 percent in a day, they're gonna get utterly smoked, and so are you. This is roughly the boat in which FXCM Inc. finds itself.

...

It's good to occasionally remember that a margin loan is a put: If you let your customer buy something for $100, and you lend them $98 of the purchase price, and then the price of the thing falls to $81, then guess what, you own the thing! Also you've lost $17. I mean, you can call the customer and ask for more money, it can't hurt. But you're not going to, like, feel full of joy and confidence while you're making that phone call.

(no subject)

Date: 2015-01-23 03:20 am (UTC)
From: [identity profile] achinhibitor.livejournal.com
I'd say that just about covers it.

Mmm, yeah. Though they were smart enough to put it in their prospectus, which means that the shareholders can't sue about it. The only question is how much of the stock has the founder managed to unload before the crash.

Though it's sort of an odd position to take with the customers. Did it somehow allow them to more easily attract customers? Usually retail customers don't pay enough attention to where the risk lies for unusual events, so I wouldn't think of it as a selling point. I wonder if there's some subtle aspect of this revolving around the fact that the customer's credit rating is not relevant to their account status -- all risk beyond they cash the customer has put into the account is borne by the firm?

Unlike stock or futures brokerages, retail foreign-exchange firms don’t have to keep customer and firm money segregated in separate accounts. Instead, they can commingle the funds. So if a firm goes under, investors have no priority in bankruptcy and their money isn’t protected by the Securities Investor Protection Corp.

Who gets into this market? Niv described FXCM’s typical client as a male, white-collar professional between 35 and 60. [Basically, gamblers.]


Jesus!

(no subject)

Date: 2015-01-23 06:14 am (UTC)
From: [identity profile] r-ness.livejournal.com
Did it somehow allow them to more easily attract customers?

I believe--and when I say I believe this I mean that because I have not extensively researched the policies of the various retail FX brokers--this practice is standard in the industry, partly competitive and partly practical.

Jesus!

What can I say? There are a lot of people who want to gamble but be able to say they're investing.

(no subject)

Date: 2015-01-30 03:53 am (UTC)
From: [identity profile] achinhibitor.livejournal.com
There are a lot of people who want to gamble but be able to say they're investing.

That reminds me of the old saw about "the business known as gambling" (running a casino) vs. "the gambling known as business" (speculative investing).

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