Complexity researchers who study the behavior of stock markets may have identified a signal that precedes crashes.
They say the telltale sign is a measure of co-movement, or the likelihood of stocks to move in the same direction. When a market is healthy, co-movement is low. But in the months and years before a crash, co-movement seems to grow.
Regardless of whether stock prices go up or down or stay the same, they do so in tandem. People are copying each other, and a small nudge can send everyone in the same direction. The system appears primed for collapse.
“One of the most important things happening now is that economists are trying to understand, what is systemic risk? When is the entire system vulnerable to disaster? Our results show that we have a direct, unambiguous measure of that vulnerability,” said Yaneer Bar-Yam, president of the New England Complex Systems Institute.
Seen through an econophysicist’s eyes, a stock market panic is an avalanche.
Bar-Yam’s findings, released Feb. 13 on arXiv, are part of an emerging research field known as econophysics. It applies to economics insights from the physical world, especially from systems in which networks of interacting units produce radical collective behaviors.
Heated water turning to gas is one such behavior, known technically as a phase transition. Another is snow gathering into an avalanche. Seen through an econophysicist’s eyes, a stock market panic is an avalanche, too.
Many improbable occurrences conspired to create Earth’s human-friendly design, and they would indeed be puzzling if ours were the only solar system in the universe. But today we know of hundreds of other solar systems, and few doubt that there exist countless more among the billions of stars in our galaxy. Planets of all sorts exist, and obviously, when the beings on a planet that supports life examine the world around them, they are bound to find that their environment satisfies the conditions they require to exist.
Many people would like us to use these coincidences as evidence of the work of God. The idea that the universe was designed to accommodate mankind appears in theologies and mythologies dating from thousands of years ago. In Western culture the Old Testament contains the idea of providential design, but the traditional Christian viewpoint was also greatly influenced by Aristotle, who believed "in an intelligent natural world that functions according to some deliberate design."
That is not the answer of modern science. As recent advances in cosmology suggest, the laws of gravity and quantum theory allow universes to appear spontaneously from nothing. Spontaneous creation is the reason there is something rather than nothing, why the universe exists, why we exist. It is not necessary to invoke God to light the blue touch paper and set the universe going.
Our universe seems to be one of many, each with different laws. That multiverse idea is not a notion invented to account for the miracle of fine tuning. It is a consequence predicted by many theories in modern cosmology. If it is true it reduces the strong anthropic principle to the weak one, putting the fine tunings of physical law on the same footing as the environmental factors, for it means that our cosmic habitat—now the entire observable universe—is just one of many.
Simon-Pierre Laplace was a Very Clever Man who did many Very Clever Things. Unfortunately, like many clever men, having got hold of a Brilliant Idea he was rather inclined to go off and use it on everything in sight, which led to a number of Very Odd Conclusions. In fact as far as science goes, he may well have been the original man with a hammer; taking aim at every problem as though it was a nail.
As is the way of these things economists got hold of Laplace’s ideas, converted them to their own and started developing delicate and intricate webs of theories and practices. Unfortunately, over the succeeding three hundred years they’ve failed to keep up with advances in physics and biology, rather leaving economists as the only believers in an approach that suggests we have no free will, a position from which they’re having to be dug out and defused, one unexploded theorist at a time.
When Isaac Newton published his theory of gravity he knew it contained a serious flaw; his equations didn’t exactly match what was observed. He reckoned, correctly, that the differences between his theory and the observations were down to the gravitational effect on the planets of other planets – so called perturbations, which he didn’t know how to mathematically model. He said:
“But to consider simultaneously all these causes of motion and to define these motions by exact laws admitting of easy calculation exceeds, if I am not mistaken, the force of any human mind.”
And, of course, he was mistaken. The force of Laplace’s mind successfully solved the problem. Having achieved this, though, Laplace went a stage further. Because he could exactly calculate the position of any planet he could compare this with the results of observations from astronomers. What he discovered changed human history.
It turned out that observers made errors, but they made them in a particular way – their observations fell about the actual position of the planet in a very distinctive pattern. This pattern, of course, was the ultra-familiar Bell curve or normal distribution. Laplace realised that human error was statistically quantifiable and, therefore, could be effectively eliminated from the data. This…
When Americans celebrate Thanksgiving, they don’t know what they are celebrating.
In American folklore, Thanksgiving is a holiday that originated in 1621 with the Pilgrims celebrating a good harvest. Some historians say that this event is poorly documented, and others believe that the Thanksgiving tradition travelled to the New World with the Pilgrims and Puritans who brought with them the English Days of Thanksgiving. Other historians think the Pilgrims associated their relief from hunger with their observance of the relief...
The Final University of Michigan Consumer Sentiment for November came in at 88.8, a bit off the 89.4 preliminary reading but up from from the October Final of 86.9. As finaly readings go, this is a post-recession high and the highest level since July 2007, over seven years ago. Today's number came in below the Investing.com forecast of 90.2.
See the chart below for a long-term perspective on this widely watched indicator. I've highlighted recessions and included real GDP to help evaluate the correlation between the Michigan Consumer Sentiment Index and the broader economy.
Nimble Storage Inc (NYSE: NMBL) reported its third quarter results on Tuesday after market close. The company reported a loss of $0.15 per share, slightly better than the $0.16 per share loss analysts were expecting, while revenue of $59.10 million was higher than the $57.75 million analysts were expecting.
In a note to clients on Wednesday, Katy Huberty of Morgan Stanley noted that the company “continues to disrupt the storage market” as new customer adoption doubled year-over-year, increasing its installed base to more than 4,300 customers.
The analyst also notes that international investments are “beginning to pay off” as revenue grew 135 percent from a year ago, contributing 20 percent of total revenue in the quarter.
However, Huberty singles out the addition of the Fibre Channel (FC) protocol. The analyst states that the company has now ex...
With warmer weather arriving to melt the early snowfall across much of the country, investors seem to be catching a severe case of holiday fever and positioning themselves for the seasonally bullish time of the year. And to give an added boost, both Europe and Asia provided more fuel for the bull’s fire last week with stimulus announcements, particularly China’s interest rate cut. Yes, all systems are go for U.S. equities as there really is no other game in town. But nothing goes up in a straight line, not even during the holidays, so a near-term market pullback would be a healthy way to prevent a steeper correction in January.
In this weekly update, I give my view of the current market environment, offer a technical analysis of the S&P 500 chart, review our weekly fundamentals-based Sector...
By Rod Garratt and Rosa Hayes - Liberty Street Economics, Federal Reserve Bank of New York
In June 2014, the mining pool Ghash.IO briefly controlled more than half of all mining power in the Bitcoin network, awakening fears that it might attempt to manipulate the blockchain, the public record of all Bitcoin transactions. Alarming headlines splattered the blogosphere. But should members of the Bitcoin community be worried?
Miners are members of the Bitcoin community who engage in a proce...
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I officially bought 250 shares of EZCH at $18.76 and sold 300 shares of IGT at $17.09 in Market Shadows' Virtual Portfolio yesterday (Fri. 11-21).
Click here for Thursday's post where I was thinking about buying EZCH. After further reading, I decided to add it to the virtual portfolio and to sell IGT and several other stocks, which we'll be saying goodbye to next week.
A four-year low for the spot price of gold has had a devastating impact on Yamana Gold (Ticker: AUY), with shares in the name down at the lowest price in six years. Some option traders were especially keen to sell premium and appear to see few signs of a lasting rebound within the next five months. The price of gold suffered again Wednesday as the dollar strengthened and stock prices advanced. The post price of gold fell to $1145 adding further pain to share prices of gold miners. Shares in Yamana Gold tumbled to $3.62 and the lowest price since 2008 as call option sellers used the April expiration contract to write premium at the $5.00 strike. That strike is now 38% above the price of the stock. Premium writers took in around 16-cents per contract o...
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Well PSW Subscribers....I am still here, barely. From my last post a few months ago to now, nothing has changed much, but there are a few bargins out there that as investors, should be put on the watch list (again) and if so desired....buy a small amount.
First, the media is on a tear against biotechs/pharma, ripping companies for their drug prices. Gilead's HepC drug, Sovaldi, is priced at $84K for the 12-week treatment. Pundits were screaming bloody murder that it was a total rip off, but when one investigates the other drugs out there, and the consequences of not taking Sovaldi vs. another drug combinations, then things become clearer. For instance, Olysio (JNJ) is about $66,000 for a 12-week treatment, but is approved for fewer types of patients AND...
This is a non-trading topic, but I wanted to post it during trading hours so as many eyes can see it as possible. Feel free to contact me directly at firstname.lastname@example.org with any questions.
Last fall there was some discussion on the PSW board regarding setting up a YouCaring donation page for a PSW member, Shadowfax. Since then, we have been looking into ways to help get him additional medical services and to pay down his medical debts. After following those leads, we are ready to move ahead with the YouCaring site. (Link is posted below.) Any help you can give will be greatly appreciated; not only to help aid in his medical bill debt, but to also show what a great community this group is.
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