Stepping back from statistics and the numbers, it's a general perception that stock market crashes are a response to unexpected and severe bad news. That would make sense right? The market is a very sophisticated machine whereby each individual buyer and seller trades on their information and the result is a market price that is, in a sense, smarter than any individual.

Fifth, growth in the rest of the world will likely slow down – more so as other countries will see fit to retaliate against US protectionism. China must slow its growth to deal with overcapacity and excessive leverage; otherwise a hard landing will be triggered. And already-fragile emerging markets will continue to feel the pinch from protectionism and tightening monetary conditions in the US.

Many factors likely contributed to the collapse of the stock market. Among the more prominent causes were the period of rampant speculation (those who had bought stocks on margin not only lost the value of their investment, they also owed money to the entities that had granted the loans for the stock purchases), tightening of credit by the Federal Reserve (in August 1929 the discount rate was raised from 5 percent to 6 percent), the proliferation of holding companies and investment trusts (which tended to create debt), a multitude of large bank loans that could not be liquidated, and an economic recession that had begun earlier in the summer.
On October 19th 1987, $500 billion in market capitalization was evaporated from the Dow Jones stock index. Markets in nearly every country around the world plunged in a similar fashion. When individual investors heard that a massive stock market crash was occurring, they rushed to call their brokers to sell their stocks. This was unsuccessful because each broker had many clients. Many people lost millions of dollars instantly. There are stories of some unstable individuals who had lost large amounts of money who went to their broker’s office with a gun and started shooting. A few brokers were killed despite the fact that they had no control over the market action. The majority of investors who were selling did not even know why they were selling except for the fact that “everyone else was selling.” This emotionally-charged behavior is one of the main reasons that the stock market crashed so dramatically. After the October 19th plunge, many futures and stock exchanges were shut down for a day.
By that year, Gutman wrote, "Video games were officially dead and computers were hot". He renamed his magazine Computer Games in October 1983, but "I noticed that the word games became a dirty word in the press. We started replacing it with simulations as often as possible". Soon "The computer slump began ... Suddenly, everyone was saying that the home computer was a fad, just another hula hoop". Computer Games published its last issue in late 1984.[13] In 1988, Computer Gaming World founder Russell Sipe noted that "the arcade game crash of 1984 took down the majority of the computer game magazines with it." He stated that, by "the winter of 1984, only a few computer game magazines remained," and by the summer of 1985, Computer Gaming World "was the only 4-color computer game magazine left."[20]
As a case in point, I present to you subprime auto loans, or loans given to consumers with less-than-prime credit scores (usually 550 to 619 on the FICO score scale). Having a lower credit score typically gives these folks fewer lending options, which allows lenders that are willing to work with subprime consumers to charge a notably higher interest rate, relative to prime-rated consumers. The problem is these consumers usually have subpar credit scores for a reason, and delinquency rates on these subprime and deep subprime loans are shooting higher.
The turbulence in India follows bursts of market volatility across Asian and developing countries this year. While a record-breaking surge in U.S. stocks has kept equity markets largely buoyant, some investors are growing skittish as global interest rates rise. The Hong Kong dollar posted its biggest swing since 2003 on Friday, while markets from Turkey to Argentina have endured big spikes in volatility in recent months.
With a Real Wealth Strategist subscription Matt will be your guide to making the kinds of profits many investors only dream about. You’ll get access to his education and experience: Over 20 years in the natural resource industry, expertise in mining, industry and agriculture, and the chance to travel with him as he visits mines, oil projects and company headquarters, in search of the perfect investment idea. Real Wealth Strategist’s portfolio focuses on all natural resources. Essentially, if there’s a way to maximize profits, he’s going to find it and recommend it.
The 1987 crash was so big that the stock market ended up losing almost $1/2 trillion. Now, what could be the probable reason for such an unnatural crash in the stock market? Market analysts over the years have deduced the reasons which could have resulted in this market crash. The first and foremost reason they found out was that the market lacked liquidity. The market failed to manage the sudden and extremely high volume of sell orders. It seemed that almost all the investors needed to sell their stocks at that particular time. This became difficult for the market to handle and resulted in the crash.
The market could collapse if the yield curve on U.S. Treasury notes became inverted. That's when the interest rates for short-term Treasurys become higher than long-term yields. Normal short-term yields are lower because investors don't require a high return to invest for less than a year. When that inverts, it means investors think the short-term is riskier than the long-term. That would play havoc with the mortgage market and signal a recession. The yield curve inverted before the recessions of 2008, 2000, 1991, and 1981.
Jesazzzz Koverist. This means that post calapse, the city air will be unbreathable from all the garbage, rotting and decaying stinking dead bodies all over all the major cities, meaning that, the DUMB-F…k survivors, these are the New Preppers, who were not preppers, who jus scavenged, tore up the restaurants, fast food joints, distribution centers, possible white, middle class, people who laughed at us prepper types, who went, damn, lets get all the food and water now, we are clearing the f…k out of town to the country. Now we can see if we awesome preppers who were able to GTFOT, GET THE F… OUT OF TOWN TYPES. then we preppers can see literally, get this millions, 50,000,000 plus, fleeing the cities, jamed up on the freeways with Jade Helm 15, russian and chinses soldiers at check points grabbing people, shooting the men point blank range and grabbing women and children off the freeways, gun ships and drones all the sky, tanks, and other military equipment suddenly rolled out on the streets of all the major cities shooting the men on all the major freeways in all the major cities. Trapped Patriots, veterans and Local Red Necks and new Freedom fighters of all races, black, white, hispanic, asain and other unreconizable nationals that we dont or cant tell wtf? there are, now engaged in gun battles against one another. The kind of situation, that even tough guys like myself litterally loose bladder control, and piss my pants at the mere taught of it. As we literally witness the first stage of calapse.
The S&P 500 ended 1999 at  1,469 and was recently at 2,814. That's an increase of 92% -- almost doubling -- over the nearly 19 years represented in the table, and it represents an average annual gain of about 3.5%. That's well below the average annual gain, driving home the lesson that over any particular investment period, your average returns may be well above or below average.
Is this going to be another October to remember for Wall Street?  As I have explained previously, the month of October has historically been the worst month by far for the U.S. stock market, and it has also been the month when our most famous stock market crashes have taken place. The stock market crash that started the Great Depression in 1929 happened in October.  The largest single day percentage decline in stock market history happened in October 1987.  And most of us still remember what happened in October 2008.  So will we be adding October 2018 to that list?  Well, so far things are certainly moving in that direction.  Between Wednesday and Thursday, the Dow Jones Industrial Average plunged a total of 1,378 points.  And the S&P 500 has now broken below the all-important 200-day moving average.  If the S&P 500 bounces back above the 200-day moving average on Friday, that will be a sign that things have stabilized at least for the moment.  If that doesn’t happen, all hell might break loose next week.
October 2018 is turning out to be a lot like October 2008.  The S&P 500 has now fallen for 12 of the last 14 trading days, and it is on pace for its worst October since the last financial crisis.  But the U.S. is actually in much better shape than the rest of the world at this point.  Even though they have fallen precipitously in recent days, U.S. stocks are still up 3 percent for the year overall.  On the other hand, global stocks (excluding the U.S.) are now down more than 10 percent for the year, and they are down more than 15 percent from the peak of the market in January.  All it is going to take is a couple more really bad trading sessions to push global stocks into bear market territory.
Our deficit and debt as numbers alone are kind of meaningless.. It only matters relative to other countries and relative to our GDP. For better or worse current economic theory under globalization seems to expect every country to grow and amass more debt while keeping those two values in some kind of balance. So it is hard even for an economist to say how relevant the size of the number is. And a lot of that theory is working out rather poorly for many Euro countries right now.
Milton Friedman's A Monetary History of the United States, co-written with Anna Schwartz, advances the argument that what made the "great contraction" so severe was not the downturn in the business cycle, protectionism, or the 1929 stock market crash in themselves, but the collapse of the banking system during three waves of panics over the 1930–33 period.[42]
Finally, as you think about your allocation there are a few things to consider. Generally, lower risk bonds hold up better during stressed markets. U.S. Treasury bonds have historically risen in value during extreme market stress. It's not guaranteed but may be helpful to portfolios if history is any guide. Also, depending on the nature of the crisis diversifying assets such as commodities, including gold, or real estate can be helpful. Again, these won't work every time, for example in 2008-9 real estate was the epicenter of the crisis but spreading your bets can help. Finally, within stocks diversification is useful. We've seen high valuations in U.S. blue chips in the 1970s, U.S. tech in the 1990s and Japanese investments in the 1980s, each was met with nasty price declines on the other side. Rather than trying to predict these events, it can be best to spread your bets across sectors, geographies and other categories, so that if the next crash does focus on one specific area, then you won't be wiped out.