The biggest movers traded on the NYSE so far are:

Company | Market Cap | Percentage Change |

Tempur-Pedic International (NYSE:TPX) | $1.59 billion | +19.5% |

Eagle Materials (NYSE:EXP) | $1.97 billion | +7.5% |

HB (NYSE:FUL) | $1.67 billion | -5.8% |

Trex Company (NYSE:TREX) | $555.2 million | -5.2% |

Actuant (NYSE:ATU) | $2.17 billion | -5.1% |

Texas Industries (NYSE:TXI) | $1.18 billion | -4.1% |

A.F.P Provida SA (NYSE:PVD) | $1.95 billion | +3% |

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**Tempur-Pedic International**(NYSE:TPX) rose a significant 19.5% to reach $31.99 per share. The company's volume for the day so far is 6.3 million shares. As a stock moves up or down, it is important to pay attention to the trading volume. This indicates the level of interest: the higher the volume, the more the interest. It is important for an investor to estimate the value of any potential or existing investment; valuation ratios make this easier. A company's capitalization (not to be confused with its market capitalization) is the term used to describe the makeup of a company's permanent or long-term capital, which consists of both long-term debt and shareholders' equity. TPX's capitalization ratio of 101.8% is relatively high. A company considered too highly leveraged (too much debt) may find its freedom of action restricted by its creditors and/or have its profitability hurt by high interest costs. Prudent use of leverage (debt) increases the financial resources available to a company for growth and expansion.

**Eagle Materials**(NYSE:EXP) has risen 7.5% and is currently trading at $46.53 per share. The company's volume is currently 667,895 shares for the day, 1.3 times its current three-month average. In technical analysis, trading volume is used to determine the strength of a market indicator. Investment valuation ratios can be very useful in estimating whether a stock price is too high, reasonable or a bargain investment opportunity. The price/earnings to growth (PEG) ratio is calculated by dividing the price/earnings ratio by growth in earnings-per-share; the lower the PEG ratio, the more reasonably valued the security. PEG ratio for EXP is 2.94. While P/E ratios are important indicators of market value, a high P/E in and of itself is not bad because it may indicate a company whose earnings are growing very rapidly, so many investors look at the PEG ratio in order to get an idea of whether or not a particular P/E ratio is justified by underlying earnings growth.

**HB**(NYSE:FUL) is currently trading at a share price of $31.44, a 5.8% decline. The company is trading at a volume of 988,854 shares. This is greater than yesterday's volume of 367,933 shares. Volume is an important indicator because it indicates how significant a price shift is. A company's investment value can be estimated using valuation ratios such as the price to earnings (P/E) ratio, the price to earnings growth (PEG) ratio, the price to sales (P/S) ratio, the price to book (P/B) ratio, and the dividend yield. The price/book value ratio is calculated by dividing the current stock price by the company's book value per share. FUL's stock is trading for more than its book value with a P/B ratio of 2.24. This implies that investors expect management to create more value from a given set of assets and/or that the market value of the firm's assets is significantly higher than their accounting value. All else being equal, a stock with a low P/B value ratio is more attractive than a stock with a high ratio. SEE: Investment Valuation Ratios: Price/Book Value Ratio

**Trex Company**(NYSE:TREX) has hit a share price of $31.32. So far today, the company's volume is 141,045 shares, in line with the current daily average. If a stock price moves on high volume, this means that the change is a significant one. While investment valuation ratios are useful tools in estimating the attractiveness of an investment, remember that it is important to look at a company's historical performance and compare the company ratios with its competitors and industry overall. The price/sales ratio measures a company's stock market price by its revenues. The P/S ratio for TREX is a high 1.53. This could be a good sign if the share price increases. All things being equal, a low P/S ratio is good news for investors, while a very high one can be a warning sign.

**Actuant**(NYSE:ATU) is trading at $28.34 per share, down 5.1%. This morning, the company is trading a volume of 682,678 shares. Volume indicates the level of interest that investors have in a company at its current price. Investors can make use of valuation ratios to estimate whether a stock is fairly valued. The debt ratio gives users a quick measure of the amount of debt that the company has on its balance sheets compared to its assets. ATU has a debt ratio of 47%, which is fairly low. In other words, the company is less sensitive to changes in business or interest rates since less of its cash flow is dedicated to paying off loan expenses. However, one thing to note with this ratio: it isn't a pure measure of a company's debt (or indebtedness), as it also includes operational liabilities, such as accounts payable and taxes payable.

**Texas Industries**(NYSE:TXI) has fallen 4.1% and is currently trading at $40.31 per share. At 567,005 shares, the company's volume so far today is 1.3 times the current three-month average. Price change alone is not enough to know how a stock is doing. Volume is an important secondary indicator used to confirm trends suggested by price movement. In making a decision about a potential or existing investment, valuation ratios are useful as a basis for seeing whether the stock price is too high, reasonable, or a bargain. Price/earnings ratios (P/E ratios) provide a measure of the relative value of a stock. TXI has a P/E ratio of 152.6. To determine the P/E ratio, an investor divides the market price of the stock by the earnings-per-share (EPS) of the stock. SEE: How To Find P/E And PEG Ratios

Increasing 3%,

**A.F.P Provida SA**(NYSE:PVD) is trading at $91.01 per share. The company's volume for the day so far is 7,959 shares. This is a sign that there will be less trading activity than there was yesterday. If a stock price makes a big move up or down, volume lets us know the significance of that move. Valuation ratios allow the investor to make a quick determination as to a company's investment value. The price/book value ratio is one of the more common methods of determining whether a stock is fairly valued. PVD's P/B ratio of 3.45 shows that its share price is higher than its book value. It is important to take the company's debt into account when using the P/B ratio as debt can boost a company's liabilities to the point where they wipe out much of the book value of its hard assets, creating artificially high P/B values. One problem with the P/B value ratio is that it can be difficult to calculate the true book value of a company, so investors should be aware that many measures of book value may provide only a rough estimate, and should be taken with a grain of salt. SEE: How Buybacks Warps The Price-To-Book Ratio

**The Bottom Line**On any given day, a particular stock may see positive or negative change in its share price. Paying close attention to the previous ratios will help you identify key times to adjust your strategy. However, these fundamental metrics must be analyzed with historic data, industry information in addition to firm specific financial statements.