"Bears" here means financial _investors_. It doesn't mean animals. A "bear" is someone who expects the stock market to go down. A "bull" is someone who expect it to go up. A sports gambler can make two kinds of bets. They can bet that a team will win, or they can bet that a team will lose. Investors can do the same thing. A bear can make special kinds of investments that are like bets that the market will go down. If the market goes down, they make money. If the market goes up, they lose money. (That's the opposite of normal investing). "Thus far" or "so far" means from some starting time up until now. But it contains the idea that something different might happen in the future. This text is referring to the present. It must have been written in 2013. "Hey, it's snowing here in Worcester! Is it snowing in Boston?" "The weather report says we will get snow, but so far there has been no snow." The writer says that the "bears have been left wanting." They are waiting and hoping the market will go down, but it hasn't. Stock market investors pay attention to earnings reports. If a company's earnings report is better than expected, the company's stock will probably go up. Thus far, earnings reports have topped--exceeded expectations. So stocks are not going down. So the "bears" are losing money now. But the story isn't over. Not all the earnings reports are in. "Thus far" they look good. But possibly other earnings reports could be bad, stocks could go down, and the bears could win their bets after all.

Dan explained it well in detail. Here's a quick answer. Yes, it is correct. It can be paraphrased like this: "The bears have been left disappointed, with their hopes for lower earnings destroyed by the latest reports."

P.S. The terms "bulls" and "bears" for stock market investors are very old. They are used in the UK and the US, and elsewhere. (There's a statue of a bull and a bear in front of the Frankfurt stock exchange, in Germany). It is thought they originated in London. Nobody really knows why these animals became the symbols. If you want to see a funny picture, do a web search for "bulls and bears painting beard." It is an 1879 painting by an artist, William Holbrook Beard. The title is "Bulls and Bears in the Market." It is an imaginary scene. It shows real, literal bulls and bears in Wall Street, the US financial district. It is a literal illustration of these figurative terms.

The sentence is from this article about the US housing market: https://www.forbes.com/sites/steveschaefer/2013/03/19/housing-still-humming-rise-in-starts-gives-bull-case-a-boost/. "bear" - in this context it's not talking about an animal, it's talking about investors who expect the value of something to go down. "to be left wanting" - means that you expected or needed something, and you have not received it, or it has not happened. "thus far" - a more common way to say this is 'so far', and it means 'up to now'. For example, "I need to save £500. So far, I have saved £250".

I can only guess that it's in reference to the North American stock market. A "bear" is the term used for an investor who often thinks negatively about matters related to stock investments. A bear may invest in a declining stock in order to profit when it recovers. "Thus far" is a term that means "up until this time."