学完本课程后，您将可以分析企业所做金融决策的主要类型。然后，您可以运用所学技能处理现实商务挑战，这也是沃顿商学院商务基础专项课程的组成部分。主要概念包括：净现值技术、资本预算原则、资产估值、金融市场运作和效率、公司财务决策以及衍生产品。

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From the course by University of Pennsylvania

企业金融概论（中文版）

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学完本课程后，您将可以分析企业所做金融决策的主要类型。然后，您可以运用所学技能处理现实商务挑战，这也是沃顿商学院商务基础专项课程的组成部分。主要概念包括：净现值技术、资本预算原则、资产估值、金融市场运作和效率、公司财务决策以及衍生产品。

From the lesson

第 2 周

在本模块中，我们不仅将讨论货币的时间价值，而且会联系通货膨胀进行讨论，然后我们将进入第二个主题，也就是利率，最后我们还将介绍第三个主题，现金流量折现法。本模块教学结束后，您将能够计算各种折价和复利现金流，对不同类型的债权进行估值，从而能更好地进行金融决策。

- Michael R RobertsWilliam H. Lawrence Professor of Finance, the Wharton School, University of Pennsylvania

Finance

Welcome back to corporate finance.

This time we're going to turn to a new topic, discounted cash flow analysis.

But before doing so, I want to briefly recap our last topic, interest rates.

We started off discussing interest rate quotes and

how they differed from the interest rates we used to discount cash flows.

We then discussed how to discount cash flow streams

when the cash flows arrived at frequencies other than annual,

and when the compounding of interest was something other than annual as well.

We closed off the topic by discussing the term structure of interest rates and

the yield curve, both of which summarize the relationship

between interest rates and the term of the investment.

Today we turn to discounted cash flow analysis and I want to start the topic off

by discussing how firms or people more generally should be making decisions.

Let's get started.

Hey everybody, welcome back to corporate finance.

Today we're going to be shifting gears to a new topic,

discounted cash flow analysis.

But before doing so, I want to briefly recap our last topic, interest rates.

So on that topic we started off by introducing the notion of APR and EAR and

a periodic discount rate.

The difference being as follows.

APR is our annual percentage rate are a means to quote interest rates,

whereas EAR, effective annual rate and

the periodic interest rate are actually discount rates.

They're economically relevant.

They're what we care about.

They're what we use to discount cash flows and make decisions.

Then we used those discount rates to value and

assess cash flow streams that were no longer arriving on an annual basis,

and to deal with the compounding of interest on a non-annual basis.

Then we closed off the topic with a discussion of the term structure of

interest rates, which is the relation between the interest rate and

the term of the investment or the duration of the investment.

And we discussed yield curves, loosely how to construct them, what the yield means,

where it comes from and how to interpret these graphs.

Now we're going to switch over to discounted cash flow analysis and

I want to start by motivating the topic and providing a little bit of background

by discussing decision making, so let's get started.

Let's start with a question, how should we make financial decisions?

Well, a reasonable answer might be to undertake those actions that create value.

Value for those affected by the decision, value for

the owners of a firm, for example, but which actions create value?

And while that's a complicated question, a sort of general answer that seems

reasonable would be to consider actions in which the benefits exceed the costs.

But here's a little wrinkle.

What if the costs and benefits arrive at different times?

Well, actually we're well equipped to deal with that wrinkle because we can compare

the present value of the the benefits to the present value of the costs.

See, because by computing the present value we know that the discount rate

R will adjust both for the timing and the risk of the cash flows.

So that brings us to our first lesson

which is that the NPV Decision Rule,

that is NPV which stands for Net Present Value, NPV.

The NPV decision rule says that we should accept all projects with a positive NPV

and reject all projects with a negative NPV.

Where NPV is nothing more than the difference between

the present value of the benefits and the present value of the costs.

In other words if the present value of the benefits is bigger

than the present value of the costs, that's a good thing, that creates value.

And we want to undertake that project or

make that decision that leads to positive NPV.

And while this formula right here looks somewhat vague and

ambiguous, it's actually masking something that we're already very familiar with,

and that's just discounted cash flows.

NPV is nothing more than discounted cash flows.

Except now instead of cash flow CF,

I have this F in front of all the cash flows, so it's FCF.

The F simply stands for free.

So these are free cash flows, but they're still just cash flows nonetheless.

There's nothing special there.

I'm going to formally define and discuss how to compute free cash flows in our

next lecture, but for the time being just recognize we're doing nothing new here.

We're taking a stream of cash flows, FCF0, FCF1,

through FCFT, and we're discounting them back to today by a discount rate r,

to get a present value, a net present value.

That's it.

And so the decision rule just says if the NPV is greater than 0, accept the project.

If the NPV is less than 0, reject the project, sorry, reject the project.

And while that seems pretty easy and straightforward,

actually implementing it is quite a bit more subtle.

And we're going to talk about those subtleties as we move along

throughout this topic.

So before moving on to some of the mechanics of a DCF analysis,

I want to talk about decision making in practice briefly.

Because it's useful to motivate it, and to understand what people

in different areas of both finance and

non-financial sectors are doing when they're making decisions.

So the first thing I want to look at is this, or show you,

is this survey evidence from a survey by John Graham and Cam Harvey,

former colleagues at Duke, in which they surveyed CFOs from

the Fortune 500 and other US domestic firms, and

they ask them how frequently do you use different capital budgeting techniques.

And what you can see is that there are actually a variety of responses.

I've listed six here.

But the majority or the predominant number of responses point

to net present value and internal rate of return,

as the most popular decision criteria that CFOs use.

That's followed somewhat closely by the payback rule, and

to a lesser extent, the discounted payback rule.

And in our discussion of DCF, while NPV is going to be center stage, we're actually

going to spend a fair amount of time discussing all of these decision rules,

because each one actually has important information for the decision making

process, though each one also has certain limitations that we need to understand.

Now that's in the non-financial corporate sector.

If we look at what investment bankers do when they are valuing

companies in fairness opinions, you can see that the large majority of investment

bankers are also relying on discounted cash flow analysis, something akin to NPV.

But they're also using a host of comparables methods, or

relying on multiples.

And while this is going to take us a little bit outside of

the scope of our course, I might mention if we have some time,

how we use multiples in valuation exercises.

If not, I might post some additional material.

And finally, there's a recent survey by Paul Gompers, Steve Kaplan,

and Vladimir Mukharlyamov.

I hope I'm not butchering that name too poorly.

But they have a really interesting survey of private equity

firms in which they investigate, among many things,

which criterion PE investors use to evaluate an investment.

And what's interesting here is the vast majority rely on internal

rate of return, by a wide margin, over any other criterion.

So let's summarize this.

So we're going to move through this topic of DCF, discounted cash flow,

emphasizing to a certain extent the NPV rule, because that is the optimal rule

in terms of always leading you to making the decision that creates value.

That said, I'm going to take a much more practical perspective to corporate

decision making, or financial decision making more broadly,

and recognize that other rules are still informative.

They're still useful.

So it's not surprising that we see their use by practitioners, whether it's PE,

private equity investors, or investment bankers or CFOs.

They're still informative, but the important thing to keep in mind is that

these other rules have certain weaknesses that we need to understand, and

we need to recognize the limitations of these rules, so

that we can use multiple rules in conjunction to come to the best decision.

So, what's next?

We're going to dive into how to compute free cash flows,

the first stage in understanding how to execute a DCF.

So, I look forward to seeing you in the next lecture, thanks so much.

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