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Balancing the risk of a bond portfolio against the risk of bond futures   no comments

Posted at 1:08 pm in bond futures

We now make the simple assumption that a single interest rate exists that drives all interest rates in the market. We assume that a 1 basis point change in this interest rate will cause a 1 basis point change in the yield on the bond portfolio and a 1 basis point change in the implied yield on the futures. We will relax that assumption later. For now, consider a money manager who holds a bond portfolio of a particular market value and will not be adding to it or removing some of it to balance the risk. In other words, the manager will not make any transactions in the actual bonds themselves. The manager can, however, trade any number of futures contracts to adjust the risk. Let Nf be the number of futures contracts traded. To balance the risk, suppose we combine the change in the value of the bond portfolio and the change in the value of Nf futures and set these equal to zero: AB + NfAf = 0.Solving for Nf produces Nf = -ABlAf. Substituting our formulas for AB and Af, we obtain
where we assume that AyB/Ayf= 1; or in other words, the bond portfolio yield changes one-for-one with the implied yield on the futures.’
Now let us go back to the major simplifying assumption we made. We assumed that an interest rate change occurs in the market and drives the yield on the bond and the implied yield on the futures one-for-one. In reality, this assumption is unlikely to hold true. Suppose, for example, the rate driving all rates in the United States is the overnight Fed funds rate.9 If this rate changes by 1 basis point, not all rates along the term structure are likely to change by 1 basis point. What actually matters, however, is not that all rates change by the same amount but that the yield on the bond portfolio and the implied yield on the futures change by the same amount for a 1 basis point change in this rate. If that is not the case, we need to make an adjustment.
Suppose the yield on the bond portfolio changes by a multiple of the implied yield on the futures in the following manner:
We refer to the symbol Py as the yield beta. It can be more or less than 1, depending on whether the bond yield is more sensitive or less sensitive than the implied futures yield. If we take the formula we previously obtained for AB, substitute PyA yf where we previously hadAyB,and use this new variation of the formula in the formula Nf=-AB/Af ,we obtain ^&3$
This is the more general formula, because Py = 1.0 is just the special case we assumed at the start.

Written by admin on March 29th, 2010

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What are sunk costs?   no comments

Posted at 4:32 pm in Sunk costs

Sunk costs are the historical costs of past decisions that cannot be reversed. Sunk costs give managers hindsight when it comes to making current decisions, but the specific costs themselves are no longer relevant. When past choices cannot be reversed – no refund is available, for example – money that has been spent is gone for good. Today’s choices must be based on the costs and benefits expected under current and future market conditions, if mistakes are to be avoided (see the accompanying Myths of Economics feature). To minimize costs, business decision makers need to realize that sunk costs are, indeed, sunk. A simple example will emphasize this point. Suppose that a firm pays $100,000 to purchase and install a roller blade- producing machine. The
machine is expected to last ten years. The company’s books record the cost of the machine as $10,000 each year under the heading of depreciation. The machine can be used only to make roller blades, though. Because dismantling and reinstallation costs are high, it cannot be leased or sold to another firm. Also, it has no scrap value. In other words, there are no alternative uses for the machine. The machine’? annual production of roller blades will generate $50,000 of revenues for the firm when it is employed with raw materials and other factors of production that cost $46,000. Thus, the net revenue generated by the machine is $4,000.
Should the firm continue to use the machine? Its depreciation figures suggest that the machine is costing the firm $10,000 annually, compared to the $4,000 net revenue it generates. Put another way, the machine is reducing the firm’s profit by $6,000 annually. The machine’s depreciation cost, however. is a sunk cost. It was incurred when the machine was purchased and installed. The current opportunity cost of the machine is therefore precisely zero. In other words, the firm is not giving up anything by continuing to use it today. Since using the machine generates $4,000 of additional net revenue, the firm can gain by continuing to use it. Of course, if market conditions are not expected to improve, the firm will not purchase a similar machine or replace the machine when it wears out, but this should not influence its decision whether to continue operating the one it already has. The irrelevance of sunk costs helps explain why it often makes sense to continue using older equipment (it has a low opportunity cost), even if it would not be wise to purchase similar equipment again.

Written by admin on December 12th, 2009

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Start with Acceptable Trading Capital   no comments

Posted at 4:31 pm in Trading Capital

Many investors start with less than $10,000 in their trading accounts. How- ever, it is important to realize that the less you have in your account, the more cautious you have to be. Perhaps the toughest problem is to establish a sufficient capital base to invest effectively. If you begin investing or trading with very little capital, you will assure yourself of failure. Making money in the markets requires a learning curve, and incurring loss is part of the trading process. When it comes to trading, “you have to pay to play.” You don’t need to be a millionaire, but trading does require a certain amount of capital to get started. In many cases, the brokerage firm you choose will determine how much is required to put you in the game. How- ever, no matter how much you begin with, it is a good idea to start out by trading conservatively. If you invest smartly, you can make very good returns and your financial goals will be realized.

Written by admin on December 9th, 2009

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The Cash Flow Statement   no comments

Posted at 4:29 pm in Cash Flow Statement

Because we are interested in the combined effects of investment, operating, and financing decisions, analyzing both the income statement for the period and the balance sheets at the beginning and the end of the period together provides more basic insights than either statement alone. Management decisions not only affect the profit for the period, but cause accompanying changes in most assets and liabilities, particularly in the accounts making up working capital, such as cash, receivables, inventories, and current payables. The statement that captures both the current operating results and the accompanying changes in the balance sheet is the cash flow statement, statement of cash flows, or funds flow statement. It gives us a dynamic picture of the ultimate changes in cash resulting from the combined decisions made during a given period.
The statement is prepared by comparing beginning and ending balance sheets and using key items of the income statement for the period, all interpreted in terms of uses and sources of cash:
•    Cash generated by profitable operations or drained by unprofitable results.
•    Cash impact of changes in working capital requirements.
•    Commitments of cash to invest in assets or to repay liabilities.
•    Raising of cash through additional borrowing or by reducing asset investments.
•    Cash impact of issuance of new shares or repurchase of shares.
•    Cash impact of dividends paid.
•    Adjustments for accounting allocations, write-offs, and other noncash elements in the income statement and the balance sheets.
•    Net impact of the period’s cash movements on the company’s cash balance.
The cash flow statement thus offers a ready overview of the combined cash impact of all management decisions during the period. The user can judge both the magnitude and the relationships of these cash movements, such as the company’s ability to fund investment needs from operational results, the magnitude and appropriateness of financing changes, and disproportional movements in working capital needs. Observing the cash flow patterns can stimulate questions about the effectiveness of management strategies as well as the quality of operational decisions. The amount of detail can vary widely, depending on the nature of the business and the different types of movements emphasized.
In the past, basic formats for these statements differed widely as well. In more recent times, the FASB and SEC required that all published cash flow statements follow a common format, listing uses and sources by the familiar three decision areas: investments, operations, and financing. This rule recognized the usefulness of this arrangement in understanding the dynamics of the business system, as described earlier.
One aspect of the cash flow statement that requires some explanation is the treatment of accounting write-offs. From a cash flow standpoint, write-offs such as depreciation and amortization merely represent bookkeeping entries that have no effect on cash. The reason is simply that the assets being amortized by these entries represent cash that was committed in past periods. Consequently, the write-off categories, insofar as they had reduced net profit, must be added back here as a positive cash flow, thus restoring the cash generated by operations to the original level before the write-off was made. The reader will recall that we recognized the cash flow implications of the depreciation effect in the earlier discussion of the business system.
The cash flow statement has the same inherent limitations as the balance sheet and the income statement, because it’s derived from the accounting data contained in these statements. However, because it focuses on the changes incurred during the period, the limitations due to historical valuation are usually not significant. However, we must remember that by displaying the net change from the beginning to the end of the chosen period in each asset, liability, and owner- ship account reported, the statement might “bury” major individual transactions that occurred during the period and perhaps offset each other. Normally, however, material transactions of this kind (such as major investments, acquisitions, or divestitures) are noted specifically in the company’s cash flow statement. The statement therefore affords the user the most detailed picture of the impact of major events of the period.

Written by admin on December 4th, 2009

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Myths of economics   no comments

Posted at 4:28 pm in Economics

This statement contains a grain of truth. A profit- seeking entrepreneur will not undertake a project knowing the costs can’t be covered. However, the statement fails to emphasize (1)the time dimension of the production process and (2) the uncertainty associated with business decisions. The production process takes time. Raw materials must be purchased, employees hired, and plants equipped. Retailers must contract with suppliers. As these decisions are made costs result. Many of the firm’s costs of production are incurred long before its product is ready for marketing.
Even a good business maker is not always able to predict the future because market conditions can change quickly and unexpectedly. At the time the product is ready for sale, buyers might be unwilling to pay a price that will cover the seller’s past costs of production. These past costs, however, are now sunk costs and no longer relevant. Decisions must now be made on the basis of the firm’s current cost and revenues.
Should a grocer refuse to sell oranges that are about to spoil because their wholesale cost cannot be covered? The grocer’s current opportunity cost of selling the or angles at this point is nearly zero. The alternative would be to throw them In the garbage next week. Almost any price, even one far below past costs, will be the oranges spoil.
Consider another example. Suppose a couple who owns a house  plans to relocate temporarily. Should they refuse to rent the house they‘re m n g out of for $500 (if this is the best offer available) because their monthly house payment IS $8007 Of course not. The house payment will go on, regardless of Wether or not they rent the house. If the homeowners can cover their opportunity costs (perhaps wear and tear plus a $60 monthly fee for a property management service), they will gain by renting rather  leaving the house vacant.
Past mistakes provide useful lessons for the future. but they cannot be reversed. Bygones are bygones. Even if they resulted in business loss. There is no need to fret overspilt milk, burnt toast, or yesterday’s business losses.

Written by admin on December 1st, 2009

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The Nature of Financial Statements   no comments

Posted at 4:27 pm in Financial Statements

To apply the insights gained from the conceptual overview of the business system, we must now look for available information that will:
•    Allow the manager or analyst to track the financial condition and operating results of the business.
•    Assist in understanding the cash flow patterns in more specific terms.
In the process of financial/economic analysis, a variety of formal or informal data are normally reviewed and tested for their relevance to the specific purpose of the analysis. The most common form in which basic financial information is available publicly, unless a company is privately held, is the set of financial statements issued under guidelines of the Financial Accounting Standards Board (FASB) of the public accounting profession and governed by the U.S. Securities and Exchange Commission (SEC). Such a set of statements, prepared according to generally accepted accounting principles (GAAP), usually contains balance sheets as of given dates, income statements for given periods, and cash flow statements for the same periods. A special statement highlighting changes in owners’ equity on the balance sheet is commonly provided as well.
Since financial statements are the source for a good portion of analytical efforts, we must first understand their nature, coverage, and limitations before we can use the data and observations derived from these statements for our analytical judgments. Financial statements reflect the cumulative effects of all of management’s past decisions. However, they involve considerable ambiguity. Financial statements are governed by rules that attempt to consistently and fairly account for every business transaction using the following conservative principles:
•    Transactions are recorded at values prevailing at the time.
•    Adjustments to recorded values are made only if values decline.
•    Revenues and costs are recognized when committed to, not when cash actually changes hands.
•    Periodic matching of revenues and costs is achieved via accruals, deferrals, and accounting allocations.
•    Allowances for negative contingencies are required in the form of estimates that reduce both profits and recorded value, usually affecting shareholders’ equity or special set-asides.
These rules leave reported financial accounting results open to considerable interpretation, especially if the analyst seeks to understand a company’s economic performance and to establish the basis for shareholder value results. It’s common practice among professional analysts to adjust the data reflected on financial statements for known accounting transactions which do not affect cash flows, and to make assumptions about the economic values underlying recorded asset values.

Written by admin on November 27th, 2009

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Gain the Knowledge to Succeed over the Long Run   no comments

Posted at 4:26 pm in finance

You have to have knowledge to succeed. Most new investors and traders enter this field expecting to immediately become successful. However, many have spent tens of thousands of dollars and many years in college learning a specific profession and still do not make much money. To be successful, you need to start your journey on the right path, which will in- crease your chance of reaching your final destination: financial security. To accomplish this goal, learn as much as you can about low-risk trading techniques and increase your knowledge base systematically.
Successful traders have an arsenal of trading tools that allows them to be competitive in the markets. I have used the word arsenal purposely. I believe that as an investor or trader, you need to recognize that each and every day in the marketplace is a battle. You must be ready to strategically launch an attack using all the resources in your arsenal. Your first weapon—knowledge—will enable you to make fast and accurate decisions regarding the probability of success in a specific investment. Is it incongruous to suggest that trading is war and also that to trade successfully one must reduce one’s level of stress? I believe not. The most composed and well-armed opponents win wars. The same is true for traders. In most cases, winners will be more comfortable (less stressed) regarding their ability to win. Knowledge fosters confidence. If you are well armed, you will be confident as you go off to fight the battle of the markets. Increased confidence leads to lower stress and higher profits.

Written by admin on November 25th, 2009

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The economic way of thinking about costs   no comments

Posted at 4:25 pm in Cost management

When economists analyze the firm’s costs, they often present a highly mechanical- some would say unrealistic- view that doesn’t take into account the subjective nature of costs and the uncertainty about the future payoffs of many choices decision makers really face.
It is important to keep in mind that costs are incurred when choices are made.
When business decision makers choose to purchase raw materials, hire new employees, or renew the lease on a plant, they incur costs. All these decisions, like other choices, must be made under conditions of uncertainty. Of course, past experience can help business decision makers anticipate the likely costs of various decisions. But the world is constantly changing; the future may differ substantially from the past.
Opportunity costs are expected costs- they represent the highest valued option that the decision maker expects to give up as the result of a choice. Think for a moment of what the cost curves developed in this series of posts really mean. The firm’s short-run MC curve represents the opportunity cost of expanding output, given the firm’ s current plant size. The firm’s long-run ATC curve represents the opportunity cost per unit of output associated with varying plant sizes and rates of output, given that the alternative plants are still on the drawing board. Opportunity costs look forward, reflecting expectations of what will be forgone as a result of current decisions. At the time decisions must be made, neither the short-run MC nor the long-run ATC can be determined from accounting records, since accounting costs look backward. Accounting figures yield valuable information about historical costs, but, as the following section illustrates, they must be interpreted carefully when they are used to forecast future costs.

Written by admin on November 20th, 2009

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THE ROAD TO SUCCESSFUL TRADING   no comments

Posted at 4:24 pm in Trade

Achieving trading success is not easy. In fact, just getting started can be an overwhelming process. The road to wealth can take many paths. To deter- mine your optimal trading approach, start by making an honest assessment of your financial capabilities. Successful traders only use funds that are readily available and can be invested in a sound manner. It is also critical to accurately assess your time constraints to determine the style of trading that suits you best. If you want to trade aggressively, you can do so using various short-term strategies. If you want to take a hands-off approach, you can structure trades to meet that time frame. All of these choices are less difficult to make if you respect the following trading guidelines.
1. Gain the knowledge to succeed over the long run.
2. Start with acceptable trading capital.
3. Establish a systematic approach to the markets.
4. Be alert for trading opportunities at all times.
5. Develop the fine art of patience.
6. Build a strong respect for risk.
7. Develop a delta neutral trading approach.
8. Reduce your stress level.

Written by admin on November 16th, 2009

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Economies and Diseconomies of Scale – 2   no comments

Posted at 4:23 pm in Economies of Scale

Economic theory explains why, at least initially, larger firms have lower unit costs than comparable smaller firms. Declining unit costs mean that economies of scale are present over the initial range of outputs. The long-run ATC curve is falling.
What about diseconomies of scale?As output continues to expand, is there reason to believe that larger firms will eventually have higher average total costs than smaller ones? The underlying causes of diseconomies of scale are less obvious, but they do occur. As a firm gets bigger and bigger, beyond some point bureaucratic inefficiencies may result. Inflexible procedures tend to replace managerial genius. Innovation requires clearance from more levels of management and becomes more difficult and costly. Motivating the work- force, carrying out managerial directives, and monitoring results of plans are also more complex when the firm is larger, and principal-agent problems grow as the number of employees increases and more levels of communication and monitoring are needed.
Circumstances vary, so diseconomies of scale set in at lower levels of firm size for some kinds of firms than for others. For example, firms in the fast-food industry can be very large and remain efficient; economies of scale apparently outweigh the diseconomies, even for giants like McDonald’s. But in the fine-dining segment of the restaurant industry, the best restaurants seem to be small. Customers demand individual attention, and a constantly changing, innovative menu that takes advantage of the constantly changing array of locally available fresh ingredients, with consistently high quality as the only constant, is important. There are few truly gourmet restaurant chains because diseconomies seem to set in at a much smaller size at these firms. The bottom line for diseconomies of scale is this: for some firms, bureaucratic inefficiencies, principal- agent problems, difficulties with innovation, and similar problems that increase with firm size cause long-run average total costs to rise beyond some output level. However. there is considerable variation among industries and even among firms in the same industry concerning the precise output level at which diseconomies of scale begin to occur .
It is important to note that scale economies and diseconomies stem from sources different from those of increasing and diminishing returns. Economies and diseconomies of scale are long-run concepts. They relate to coriditioris of prodiictiori when all factors are variable. In contrast, increasing and diminishing returns are short-run concepts, applicable only when the firm has at least one fixed factor of production.

Written by admin on November 13th, 2009

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