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Finance and capital markets
Course: Finance and capital markets > Unit 9
Lesson 4: Collateralized debt obligationsCollateralized debt obligation (CDO)
Introduction to collateralized debt obligations (to be listen to after series on mortgage-backed securities. Created by Sal Khan.
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- At, he says that the Equity tranche gets $55m or a "16.5% return" (on $300m). Shouldn't this be 55/300 = 18.3% ? Or am I missing something? 6:52(25 votes)
- I think you are right. Your pen must be working better than Sal's.(26 votes)
- Since MBS is a security and has liquidity, as Sal has pointed out in the video, it can be traded, which means its price fluctuates. I am trying to figure out how its price is related to the mortgage interest. My broker showed me a chart of FNMA 30yr, and told me that the underlying security shows opposite trend of the mortgage rate, i.e. the higher the price of the stock, the lower the interest rate, and vice versa. I haven't figured out why this is the case.(5 votes)
- I like to think of it as the law of supply and demand. Mortgage interest rates reflect the rate of return on Mortgage Backed Securities. When regular stocks are doing well, investors don't put much of their money into MBS since the return is low compared to other stocks. As a result, mortgage interest rates must increase to make MBS more attractive to investors. But when the stock market suddenly becomes volatile (like after a traumatic global event), investors start moving their money into MBS since this is generally considered a less risky safehaven. When investors start buying lots of MBS all of a sudden, this drives the MBS share price up. At the same time, the average MBS rate of return (i.e. mortgage interest rate) falls since the higher rate is no longer needed to attract investors. In short, what's good for the economy is bad for mortgage rates, and vice versa. Hence, most stock market fiascos are followed by great mortgage rates! Incidentally, the reason mortgage rates have been so low since November 2008 is due to the government's policy of "Quantitative Easing"--meaning the government has been constantly buying billions of dollars worth of MBS to "stimulate the economy." This forces mortgage interest rates to remain low, which creates a domino affect (new housing construction etc.) that spurs economic growth.(15 votes)
- My only question is, I'm at a loss finding upside risk in the securities. The MBS is priced based on the CFs from the mortgages, what would cause the security to trade at a premium? Would it just be speculation given the number of mortgages in the pool having variable interest rates? And as a side question to that, what motivation does the IB have to purchase these mortgages at anything more than par, back to the upside risk question, shouldn't the mortgager have to sell at a discount?(2 votes)
- Well, it used to be that the default rate was very low. So even though they knew they were funding people who could never pay, they were blinded by the money. They thought they would all just flip the property in a couple years and move on and that would happen forever with infinite inflation. On top of that, the borrowers were being blinded by the sums. They were being told, "You can afford this fabulous home that was always out of reach!" So people were borrowing stupidly because they thought there was some way they could afford it or else the loan would not be made to them. So the rating on the housing loans were very high because people were selling and not defaulting, so on and so forth. But then, people got to where they could not even make the minimum payment on an interest only loan. Someone puled back the curtain, we all saw the wizard pulling the levers, insurance companies stopped backing the titles, and the house of cards got blown over.(5 votes)
- I have a question regarding Sal's rate of return. He mentions in the previous video it would be 9% (approximately) but he seems to describe it as 9% of the money that is owed by the mortgagees (which we think is $1b, i.e. the amount of their mortgages). Thus they would get approximately $90 a year and then the $900 after ten years. However the owners of the MBSs all paid $1100 for their shares; isn't your rate of return usually calculated compared to your investment, and therefore lower than 9%?(2 votes)
- What Sal did not explain was what happens to the 10% money that was recovered. This money is given back to the Senior tranche and the outstanding principal is reduced to 900M. You continue to get 80M interest from the rest of the mortgagees which roughly work out to 8.9% on outstanding loan.(3 votes)
- Was one of the core problems of the credit bubble the very fact that traditionally "illiquid" assets (mortgages) became very liquid due to mortgage-backed securities and CDOs? If so, why was it problematic?(2 votes)
- Yes, and this became problematic because illiquid assets also tend to be very opaque, because there really is no need to divulge information on assets that are practically impossible to sell. When these mortgages became liquid, their opaqueness remained. That meant that investors had no idea what they were buying, and so had no idea that the banks were lowering their standards. For traditionally liquid assets, transparency is almost always present.(3 votes)
- If my 325k mortgage has a 7% intrest, how can anyone get 16% from that mortgage? I realize that there are many mortgages in a tranche but surely, not all of them are 16% or higher. Where does the money come from to pay investors?(2 votes)
- The mortgages are 10% interest. The senior tranche get 6%, and the mezzanine traunche get 7%. If you take the weighted average of the 6%, the 7%, and the 16.5%, it will turn out to be 10%.(2 votes)
- Besides the investment banks, who issues collateralized debt obligation?. Where is it most prominently used?(2 votes)
- Dear Sal,
I would like to know what happens when there are lots of prepayments. Does all the prepaid money goes to the equity tranche or does the SPE reinvest it somehow. Cheers from Claire(2 votes) - My understanding of tranches is that they are divisions of an asset, divided into different groups by how much risk and reward they have.
But my understanding of derivatives is that they are a division of an asset, divided into different groups. Is the type of grouping the only difference?
Am I understanding this properly?(1 vote) - So for the Mez. and Senior tranches to be affected, 33% and 66% default rates, respectively, would have to be achieved, right?(1 vote)
- A 30% default (300M/1000M) wipes out the Equity tranche. Default rates above 30% will start impacting Mezzanine tranche which gets wiped out at 60% (600M/1000M), and default rates above 60% will impact Senior tranche.(2 votes)
Video transcript
Welcome back. Well, in the last presentation,
we described a situation where you had
a bunch of borrowers. They needed $1 billion
collectively, because there's 1000 of them and they each
needed $1 million to buy their house. And they borrowed the money
essentially from a special purpose entity. They borrowed it from their
local mortgage broker, who then sold it to a bank, or to
an investment bank, who created the special purpose
entity, and then they IPO the special purpose entity and raise
the money from people who bought the mortgage-backed
securities. But essentially what happened
is the investors in the mortgage-backed securities
provided the money to the special purpose entity to essentially loan to the borrowers. And then the reason why we call
it a security is because, not only are these people
getting this 10% a year, but if they want to -- let's say
that you had one of these mortgage-backed securities and
you paid $1000 for it. And you're getting this 10%
a year, but then all of a sudden, you think that the whole
mortgage industry is about to collapse, a bunch of
people are going to default, and you want out. If you just gave someone
a loan, there'd be no way to get out. You'd have to sell that
loan to someone else. But if you have a
mortgage-backed security, you can actually trade the security
with someone else. And they might pay you, who
knows, they might pay more than $1000. They might pay you less. But there will be at least some
type of a market in the security, so you could have what
you could call liquidity. Liquidity just means that
I have the security and I can sell it. I could trade it just like I
could trade a share of IBM or I could trade a share
of Microsoft. But like we said before, this
security, in order to place a value on it, you have to do some
type of analysis of what you think it's worth. Or what you think the real
interest will be after you take into account people
pre-paying their mortgage, people defaulting on their
mortgage, and other things like short-term interest rates,
et cetera, et cetera. And there is only maybe a small
group of people who are sophisticated enough to be able
to figure that out to make some type of models and
who knows if even they're sophisticated enough. There might be a whole other
class of investors here, say this guy. He would love to kind of invest
in insecurities, but he thinks this is too risky. He'd be willing to take a lower
return as long as he was allowed to invest in less
risky investments. Maybe by law, maybe he's a
pension fund or he's some type of a mutual fund, that's forced
to invest in something of a certain grade. And say that there's another
investor here, and he thinks that this is boring. You know, 9%, 10%. Who cares about that? He wants to see bigger
and bigger returns. So there's no way for him to
invest in this security and to get better returns. So now we're going to take this
mortgage-backed security and introduce one step further
kind of permutation or derivative of what this is. That's all derivatives are. You've probably heard the term
derivatives and people do a lot of hand-waving saying, oh,
it's a more complicated form of security. All derivative means is you take
one type of asset and you slice and dice it in a way to
spread the risk, or whatever. And so you create a
derivative asset. It's derived from the
original asset. So let's see how we could use
this same asset pool, the same pool of loans, and satisfy
all of these people. Satisfy this guy, who wants
maybe a lower return but lower risk, and this guy, who's
willing to take a little bit higher risk in exchange
for higher return. So now in this situation, we
have the same borrowers. They borrowed $1 billion
collectively, right, because there's 1000 of them, et
cetera, et cetera. And they're still a special
purpose entity, but now, instead of just slicing up the
special purpose entity a million ways, what we're going
to do is we're going to split it up first into three, what
we could call, tranches. A tranche is just a bucket,
if you will, of the asset. And we're going to call the
three tranches: equity, mezzanine, and senior. These are the words
that are commonly used in this industry. A senior just means, if this
entity were to lose money, these people get their money
back first. So it's the least risk out of all of
the tranches. Mezzanine, that just means
the next level or middle. And these guys are some
place in between. They have a little bit more
risk, and they still get a little bit more reward than
senior, but they have less risk than this equity tranche. Equity tranche. These are the people who
first lose money. Let's say some of these
borrowers start defaulting. It all comes out of the
equity tranche. So that's what protects the
senior tranche and the mezzanine tranche
from defaults. So in this situation what we did
is we raised -- out of the $1 billion we needed -- $400
million from the senior tranche, $300 million from the
mezzanine tranche, and then $300 million from the
equity tranche. The $400 million senior tranche
we raised from soon. 1000 senior securities,
collateralized debt obligations. These are these, right here. Say there were 400,000 of these
and these each cost $1000, right? Let's say these cost $1000. And we issued 400,000
of these. So we raised $400 million. Let's say we give these
guys a 6% return. And you might say, 6%,
that's not much. But these guys, it is pretty low
risk, because in order for them to not get their 6%, the
value of this $1 billion asset or these $1 billion loans, would
have to go down below $400 million. Maybe I'll do a little bit more
math in another example. But I think it'll start
making sense to you. For example, every year we said
there's going to be $100 million in payments, right? Because it's 10%. $100 million in payments. Of that $100 million in
payments, 6% on the $400 million, that's $24 million
in payments. Right? So $24 million in payments will
go to the senior tranche. Similarly we issued 300,000
shares at $1000 per share on the mezzanine tranche. This is also 1000. This is the mezzanine tranche. And let's say they get 7%,
a slightly higher return. And these percentages are
usually determined by some type of market or what people
are willing to get. But let's just say it's
fixed for now. Let's say it's 7%. So 300,000 shares, seven 7%. These guys are going
to get $21 million. Right? So out of the $100 million every
year, $24 million is going to go to these guys, $21
million is going to go to these guys, and then whatever's
left over is going to go to the equity tranche. So the $300 million from equity,
they're going to get $55 million assuming that
there are no defaults or pre-payments or anything shady
happens with the securities. But these guys are going
to get $55 million. Or on $300 million, that's
a 16.5% return. And I know what you're
thinking. Boy, Sal, that sounds amazing. Why wouldn't everyone want
to be an equity investor? I don't know. My pen has stopped working. But anyway, I'll try to move
on without my pen. So you're saying, why wouldn't
everyone want to be an equity investor? Well, let me ask
you a question. What happens if -- let's go to
that scenario where we talked before -- 20% of the borrowers
just say, you know what? I can't pay this mortgage
anymore. I'm going to hand you back
the keys to these houses. And of that 20%, you only
get a 50% return. So for each of those $1 million
houses, you're only able to sell it for $500,000. So then instead of getting $100
million per year, you're only going to get $90
million per year. I wish I could use my pen. Something about my computer
has frozen. So instead of $100 million a
year, you're now only going to get $90 million a year. Right? And all of a sudden,
these guys are not going to be cut off. This guy is still going to get
$24 million, this guy is still going to get $21 million, but
now this guy is going to get $45 million. But he's still getting
above average yield. Now let's say it gets
even worse. Let's say a bunch of
borrowers start defaulting on their loans. And instead of getting $90
million per year, you start only getting $50 million
in per year. Now you pay this guy
$24 million. You pay this guy $21 million
-- or this group of guys or gals -- $21 million. And then all you have left is
$5 million for this guy. And $5 million on $300 million,
now he's getting less than a 2% return. So this guy took on higher
risk for higher reward. If everyone pays, sure,
he gets 16.5%. But then if you start having a
lot of defaults, if, let's say, the return on what you get
every month goes in half, this guy takes the entire hit. So his return goes to 0%. So he had higher risk,
higher reward, while these guys get untouched. Of course, if enough people
start defaulting, even these people start to get hurt. So this is a form of a
collateralized debt obligation. This is actually a
mortgage-backed collateralized debt obligation. You can actually do this type
of a structure with any type of debt obligation that's
backed by assets. So we did the situation with
mortgages, but you could do it with a bunch of assets. You could do it with
corporate debt. You could do it with receivables
from a company. But what you read about the
most right now in the newspapers is mortgage-backed
collateralized debt obligations. And to some degree, that's
what's been getting a lot of these hedge funds in trouble. And I think I'll do another
presentation on exactly how and why they have gotten
in trouble. Look forward to talking to you