Affymax (AFFY)
Affymax Beta: 1.336
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AFFY Beta Range, Past 5 Years
| Minimum | 0.8717 | Feb 2010 |
| Maximum | 1.336 | Apr 2012 |
| Average | 1.129 |
About Beta 60 Month
YCharts calculates the 60 month market beta by regressing stock returns less the risk free rate of returns on the market returns less the risk free rate of return (Market returns come from the S&P 500 Total Returns Index (SPXTR), and the risk free rate is the 4 Week Average T-Bill (Monthly). There must be a minimum of 36 months of stock returns for a company to have its beta calculated.
Beta is a measure of the risk of a stock when it is included in a well-diversified portfolio.
In financial theory, the Capital Asset Pricing Model breaks down expected stock returns into two components. The first is the return that would be expected based on covariance with the movements of the market (for most stocks, when the market as a whole goes up, the price of the stock will also go up). The second part is the increase in the price of a stock that is not explained by the market. The first part - covariance with the market - is what Beta captures.
When Beta is positive, the stock price tends to move in the same direction as the market, and the magnitude of Beta tells by how much. If a stock's Beta is greater than 1, that means that when the market index goes up 1%, we expect the stock will go up by more than 1%. On the contrary, if the market goes down by 1%, we expect the stock to go down by more than 1%. Negative Betas, while rare, signify a negative correlation. When the market goes up, we would expect the stock price to go down.
For readers with a background in regression analysis, Beta is the slope of the linear regression shown in the formula below, where Returns are the return on an individual stock or portfolio, Rf is the risk free rate, RMarket is the return on a market portfolio, and e is an error term.
Learn More
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AFFY News
about 2 days ago by mydanilo
about 5 days ago by StockTiger
May 21, 12:35PM Street Insider
about 6 days ago by chileeater
May 21, 12:17PM Street Insider
about 11 days ago by StockTiger
about 11 days ago by StockTiger
about 12 days ago by Glopolon
May 08, 10:42AM Street Insider
Apr 30, 4:00PM Business Wire
Apr 13, 8:06AM Street Insider
Apr 09, 4:01PM Street Insider
Apr 09, 4:00PM Benzinga
Apr 09, 4:00PM Business Wire
Apr 05, 4:20PM Street Insider
Apr 05, 2:00PM Benzinga
Recent Quotes
| Symbol | Price | Chg | Chg % | Market Cap |
|---|---|---|---|---|
| AFFY | 14.07 | -0.18 | -1.26% | 503.28M |
| AFFX | 4.96 | +0.03 | +0.61% | 349.43M |
| AFFM | 0.4502 | -0.10 | -18.10% | 6.938M |
| AGO | 12.23 | -0.11 | -0.89% | 2.233B |
| AGNC | 32.22 | +0.09 | +0.28% | 9.666B |
| AGN | 90.53 | +0.04 | +0.04% | 27.59B |
| AGMA | 18.51 | +0.00 | +0.00% | |
| AGM | 24.44 | +0.11 | +0.45% | 253.20M |
| AGII | 28.82 | +0.77 | +2.75% | 753.64M |
| AGG | 110.92 | +0.17 | +0.15% |
