On this last day of September, stock markets made back a decent amount of the losses from earlier in the week but even with today’s gains, tremors rumbled through the financial world following dire predictions from billionaire business entrepreneur Carl Icahn.

Icahn told CNBC’s “Fast Money: Halftime Report” today:

“Markets look “way overpriced” and many investors have put themselves in “dangerous” positions. We’re in a bubble and the public in my opinion is going to get really hurt,” This market is in very dangerous territory. I think earnings are misstated and sort of a complete mirage.”

Many of the points that Icahn focused on today are in a video that he posted this week entitled “Danger Ahead.”  Watch Carl Icahn on today’s (9/30/15) edition of CNBC’s Fast Money Halftime Report below.

Listen to more of Carl Icahn’s interview with CNBC today- here.

Thanks mainly to a surge in world markets, U.S. stocks did gain about about 1.5 percent or more today, but the major averages still struggled with the worst quarter in four years

Here are the final numbers from Wednesday, 9/30/15 on Wall Street:

Dow Jones Industrial Average: 16,284.70 (+235.57/ +1.47%)

NASDAQ: 4,620.17 (+102.84 / +2.28%)

S&P 500: 1,920.03 (+35.94 / +1.91%)

Volatility and concern over world markets was still very evident at the start of Tuesday trading as the markets struggled to regain any of the substantial losses from the prior day.

Following Monday’s performance the major averages remained in correction territory- more than 10 percent below their 52-week highs.

Continued signs of economic weakness in China have driven down commodity prices such as copper and iron and subsequently have hurt companies in the metals and mining industries.  Goldman Sachs also cut its end of year forecast for the S&P 500 by 5% due to the sluggish pace of economic activity in China and in the U.S. and a drop in oil costs. Oil prices remained near $45 dollars per barrel.  Mega companies like Apple and Facebook were down 3% each, while health-care/bio-tech companies gave back early gains prompting the Nasdaq to fall  1%.

Peter Cardillo, chief market economist at Rockwell Global Capital told CNBC:

“If we don’t hold yesterday’s close that makes me extremely worried that this market is going to enter bear market territory”

Kevin Caron, a market strategist and portfolio manager with Stifel Nicolaus & Co. explained to Bloomberg:

“When we have spikes in volatility, like we did at the end of August, that’s normally followed by some additional choppiness until it peters out. It’s not uncommon to see this around changes in direction for key things like monetary policy. We still have this lingering volatility that we’re working through.”

Here are the final numbers from Tuesday, 9/29/15 on Wall Street:

Dow Jones Industrial Average: 16,049.13 (+47.24/ +0.30%)

NASDAQ: 4,517.32 (-26.65 / -0.59%)

S&P 500: 1884.09 (+2.32 / +0.12%)

U.S markets opened the final week of September 2015 with a nervous level of uncertainty on the ambiguity of a possible future rate hike by the Fed, along with more worries about the global economy.  The S&P 500 dropped over 2.4%, falling below the emotionally important level of 1,900 for the first time since August 26^th.  The Dow lost over 311 points, while the Nasdaq fell over 3%.  Apple lost more than 1.5% despite the fact that the company sold more than 13 million new iPhones during a record first weekend of sales for the new iPhone 6s & 6s Plus.  The big loser was biotech stocks.

BioShares Portfolio Manager Paul Yook told CNBC: “I think it’s a lot of panic. It’s a lot of people who came in recently.”

James Gaul, portfolio manager with Boston Advisors LLC told Bloomberg.com: “We are in a chaotic market with lots of volatility.”

The Dow and S&P are now on track for their worst quarter in four years.

Here are the final numbers from Monday, 9/28/15 on Wall Street:

Dow Jones Industrial Average: 16,002.86 (-312.78 / -1.92%)

NASDAQ: 4,543.97 (-142.53 / -3.04%)

S&P 500: 1881.77 (-49.57 / -2.57%)

Janet Yellen has spoken. The Federal Reserve announced Thursday that they will not raise the key interest rate in September. Many investors speculated that a raise in interest rates wouldn’t bode well for the stock market. It seems that the stock market was doomed either way, as the Dow Jones Industrial Average opened almost 200 points in the red and continued its free fall.

Yellen shared that the Fed decided to do nothing because of concerns over global markets (i.e. China) and their belief that the United States economy is actually doing well. Despite of that silver lining, this inaction leaves investors with an uncertain feeling about the future of our economy.

Major stock markets in Europe, like Germany and France, fell over 2.5% after the news broke. The Dow wiped out all of this week’s earnings, dropping a total of 8% since the start of the year.

Crude oil prices even went down 5% to $45 a barrel. It turns out no news is bad news today.

Here are the final numbers from Friday on Wall Street:

Dow Jones Industrial Average: 16,384.58 (-290.16)

NASDAQ: 4,827.23 (-66.72)

S&P 500: 1958.03 (-32.17)

After much anticipation The Federal Open Market Committee has announced it will not raise interest rates this month.  Fed Chair Janet Yellen stated at a press conference that their decision to keep interest rates where they are was based on instability in foreign markets, especially China, and that the U.S. economy is actually doing quite well.

The effect of all this on the stock market?  A roller coaster ride on all three indices.  The Dow and NASDAQ gained slowly leading up to the announcement, dropped below their previous close when the news emerged, spiked as Yellen spoke to the strength of our economy, then dove below opening levels less than an hour later.

The S&P didn’t quite have the drop the other two markets did at the time of the announcement, but did see a spike during the speech, and subsequent drop afterwards.

Yellen spoke to instability in China’s economy, which showed as the Shanghai Index closed down 2.15% bringing their losses over the last five days to 3.5%.

Here are the final numbers from Thursday on Wall Street:

Dow Jones Industrial Average: 16,674.74 (-65.21)

NASDAQ: 4,893.95 (+4.71)

S&P 500: 1990.20 (-5.11)

Today marked the start of the Federal Reserve’s two-day meeting to decide whether or not to raise interest rates. The debate on what should be done marches on and Wall Street is divided. It seems nobody wants to make any big moves until the final announcement is made Thursday afternoon.

Asians stocks spiked, with the Shanghai Composite (China’s staple index) ending nearly 5% higher. Oil prices also increased to $47 a barrel, mainly due to a drop in inventory surplus.

Here are the final numbers from Wednesday on Wall Street:

Dow Jones Industrial Average: 16,739.95 (+140.10)

NASDAQ: 4,889.24 (+27.72)

S&P 500: 1995.28 (+17.19)

The Consumer Sentiment Index is measured each month by The University of Michigan, and rates the optimism consumers have on the U.S. Economy.  For the month of September, consumer sentiment came in at 85.7, well below the expectations of 91.2.

Oil prices dropped more than 3.5% in the morning following a report from the International Energy Agency, stating that Non-OPEC oil production will drop by nearly 500,000 barrels per day in 2016.

Despite all the bad news that came out, stocks rebounded by the end of the day, led by McDonalds, United Health, Apple, and Kroger.  Oil also recovered to close up .34% at $44.78 per barrel.

Here are the final numbers from Friday on Wall Street:

Dow Jones Industrial Average: 16,433.09 (+102.69)

NASDAQ: 4,822.34 (+26.09)

S&P 500: 1961.05 (+8.76)

The Federal Reserve Bank could be raising interest rates sooner than you think.  Around 8:30am Friday morning The Fed’s Jobs Report was released, and the news was mixed.  This report has been touted as a key piece of data The Fed will use in deciding whether or not to raise interest rates later this month.

The report stated 173,000 jobs were created, which is almost 50,000 less than the 220,000 that was expected.  In addition, hourly wages rose .3 percent bringing them to a gain of 2.2 percent. Unfortunately that increase is well below the 3.5% The Fed would like to see.

Unemployment did drop to 5.1%, but the mixed reviews are enough to increase speculation The Fed will raise interest rates, and immediately tank our markets.  The markets were up 1% as of 11 AM Thursday but lost those gains by the end of the day. Now, at Friday’s end, all three major indices are in the red: The Dow by 1.66%, Nasdaq by 1.05% and S&P by 1.53%.

That’s not the only negative news to surface on Friday, as oil field service company Baker Hughes reported U.S. energy firms cut 13 oil rigs, bringing the number of rigs down to 662 as compared to 1,584 a year ago.  Oil was over 48 dollars a barrel yesterday and lost 1.5% – down to $46.05 per barrel.

Oil’s drop was also fueled by The European Central Bank’s statement that China’s troubles would drag them into deflation.  Also, Japan’s Nikkei 225, London’s FTSE 100, and Germany’s DAX all lost over 2% today, reinforcing that we truly live in a world economy.

Here are the numbers on Wall Street as of 1:30 PM Friday:

Dow Jones Industrial Average: 16,102.38 (-272.38)

NASDAQ: 4,683.92 (-49.58)

S&P 500: 1921.22 (-26.80)