Today’s bull market run, now in its eighth year, is ripe with thriving companies that give investors opportunities to invest in momentum. After all, stocks are tapping all-time highs and show no signs of slowing.

But today’s market does have some pockets of struggling industries, and investors can turn to these sectors to find the best shorts this year.

Here are three sectors to start exploring shorts for the rest of 2017:

Independent oil and gas 

Like many commodities, the oil and gas business is cyclical, and it’s currently in a down cycle amid a glut of global supply. Some analysts say they expect the slump in oil prices to last. Among them, Wells Fargo analyst Austin Pickle recently said he thinks oil's bear market will last another five to 10 years, according to CNBC, with oil prices remaining between $30 and $60 per barrel,

While oil prices are recovering slightly in recent months, they are significantly lower than $115 per barrel, their post-recession high hit in March 2011. Crude oil was trading near $57 per barrel as of Nov. 20. 

Independent oil-related companies like Superior Energy Services (SPN​) are struggling and are likely to continue to struggle if oil prices remain depressed. That’s because they tend to have higher-than-average costs. Superior shares are down about 47 percent since the beginning of the year.

Traditional and apparel retailers

The retail sector has some of the most reliable shorts this year. A significant part of this sector is in a downward spiral that few expect to reverse.

Retail sales in general are actually increasing amid an improving economy. U.S. retail sales increased 1.6 percent in September and edged up 0.2 percent in October, according to the U.S. Commerce Department. But those numbers are primarily driven by online sales as today’s shoppers increasingly turn to the Internet and are not heading out to stores as often.

As a result, traditional brick-and-mortar retailers are suffering. Retailers with a heavy presence in malls are especially hurt by today’s move online. A slew of mall-based apparel retailers have filed for bankruptcy this year, including Gymboree, Wet Seal, The Limited and BCBG Max Azria.

The department stores chains that anchor malls, like JC Penney (JCP​) and Macy’s (M) are also in decline. JC Penney shares are down 60 percent year to date as of Nov. 20, plunging to all-time lows. And Macy’s shares are down 40 percent during that time.

Holiday sales are expected to increase 3.6 percent to 4 percent to an estimated $678.8 billion to $682 billion, according to the National Retail Federation. Last year, holiday sales were $655.8 billion. 

Retail Real estate

In tandem with shorting the retail sector, investors should also look at the companies related to the real estate supported by retailers.

Mall landlords, or real estate investment trusts (REITs), including Simon Property Group (SPG) are feeling the brunt of the ailing retail sector’s bankruptcies and store closures. For example, Sears Holdings (SHLD) recently announced it would close another 63 locations starting early next year with liquidation sales beginning in November.

Without retail tenants, mall landlords can’t collect rent. Their problems will likely continue to escalate as more traditional retailers with sliding sales shutter stores and break leases under bankruptcy protection. Simon Property Group's stock is down about 5 percent so far this year. Shares of DDR Corp. have fallen about 43 percent.

Want to learn how to invest?

Get a free 10 week email series that will teach you how to start investing.

Delivered twice a week, straight to your inbox.