November 18, 2003

Options

We did a few options diagrams, which now makes this diagram fair game for the midterm.

Own corn and buy a put option to lower your risk:

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Own corn, buy a put, and sell a call to construct a risk-free position. The prices of options will adjust in the markets to squeeze out potential arbitrage profits (economists' view). There are huge arbitrage profits out there (MBA view). Historical footnote: Long-Term Capital Management tried to secure these arbitrage profits and nearly brought down the world's financial markets when they failed. (See The Econ Review when the LTCM story is featured.

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In the real world, the strike prices on the call and put options could be different, giving flexible strategies for dealing with risk.

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Later in the afternoon, we got some nice pictures from Murphey Hall.

Reducing risk a bit by owning corn and sell a call option:

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Reducing risk by owning corn and buying a put option:

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Posted by bparke at 09:25 PM

The Transactions Demand for Money - II

We looked into the amount of currency in circulation and were unable to square the amount with the fable about shoe leather and trips to the bank.

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Posted by bparke at 09:18 PM

Getting Ready for MT 2

What happens to the optimal portfolio if the return the risk-free asset falls?

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There are basically six versions of this question. Here we see in increase in the expected return on the risky asset.

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Demonstate the two equations that we use to construct the budget constraint in the diagram of risk vs. expected return.

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We also revisited the explanation of why we do not spend serious time working on the case of more than one risky asset.

Posted by bparke at 09:16 PM

Review Session

We journeyed to Murphey Hall and we quite impressed with the amenities, which included central air, chalkboards you can actually erase, and very nice furnishings.

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We revisited "why the demand for money depends on the interest rate." Notice the nice photogenic chalkboard.

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We determined the U.S. interest rate that is consistent with interest rate parity.

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Comparing the forward rate calculations with the expectations hypothesis:

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Would it be economics without an income and substitution effects diagram?

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Posted by bparke at 09:07 PM