This earnings season hasn't been so hot.

Outside of a few big winners in the glamour stocks like Amazon and Facebook, both of which hit new highs after reporting earnings, there were plenty of others who disappointed and saw big sell offs.

Earnings season separates the wheat from the chaff.

Who is really performing well in this challenging global economy?

Look for the "Beat and Raise"

Despite all the doom and gloom being touted out there, it's possible to find the secret winners, those companies not everyone is talking about, which are performing at the highest level.

Some companies not only beat the quarterly earnings estimate but they raised full year guidance. This is what is routinely referred to as the "beat and raise."

With currency issues and the commodities slowdown, however, the beat and raise has been harder to come by this quarter. Only the top companies have done it. They are seeing strong fundamentals going into the end of the year and the momentum looks to be continuing into 2016.

If you're going to invest, why not focus only on the best?

5 Beat and Raise Stocks to Buy Now

All 5 of these stocks are Zacks Rank #1 (Strong Buy) or #2 (Buy) stocks. That means they have rising earnings estimates which makes sense as they recently raised full year guidance so analysts have had to boost estimates to keep up.

1. Nutrisystem, Inc. (NTRI - Snapshot Report)

Nutrisystem sells weight loss programs to men and women in the United States. Health and wellness has come into the spotlight, including better eating.

The company beat by 2 cents and raised the lower end of its full year EPS guidance range. This was the second quarter in a row the company beat-and-raised.

Revenue jumped 16% as retail revenues rose 35% due to traction at Walmart and new product launches.

Earnings are now expected to be in the range of $0.91 to $0.96 up from its prior range of $0.87 to $0.97. The full year outlook is looking a lot more bullish than it did earlier in the year when the company was only looking for $0.73 to $0.83.

Zacks Rank #2 (Strong Buy)
2016 expected earnings growth = 20.2%
Forward P/E = 26

2. Fitbit, Inc. (FIT - Analyst Report)

Fitbit makes wearable fitness tracking devices worldwide which allow customers to track their health and wellness. The wearables have become a fitness phenomena.

The company beat by 5 cents in the third quarter and raised full year earnings and revenue guidance. 2015 earnings are now expected in the range of $0.90 - $0.92 up from the prior guidance of $0.69 - $0.77.

Revenue was up 168% year over year, including 130% in the United States.

The stock took a tumble, however, when the company also announced a secondary offering of 7 million shares and also said that shareholders were selling an additional 14 million shares.

Zacks Rank #2 (Buy)
2016 expected earnings growth = 34%
Forward P/E = 60

3. Columbia Sportswear Company (COLM - Analyst Report)

Columbia Sportswear makes active lifestyle apparel, footwear, accessories and equipment under several well known brands including Columbia, Sorel, prAna, Montrail and OutDry.

It crushed the Zacks Consensus Estimate for the second quarter in a row, this time beating by 21 cents.

Net sales were up 14% with 25% growth in the important North America market. Columbia was bullish about the rest of the year as its brands are performing well. It raised its sales outlook to growth of 10.5% or about $2.3 billion.

This was the second quarter in a row that it has done the beat-and-raise. Given the challenging retail market, that's impressive.

Zacks Rank #1 (Strong Buy)
2016 expected earnings growth = 12.9%
Forward P/E = 23

4. HanesBrands Inc. (HBI - Analyst Report)

HanesBrands makes innerwear and activewear apparel in the Americas, Europe and Asia under the well-known brands of Hanes, Champion, Playtex, Bali, Maidenform, Flexees, Wonderbra, Lovable and Gear for Sports. It sells T-shirts, bras, panties, shapewear, underwear, socks, hosiery and activewear.

The company beat the Zacks Consensus by 5 cents as net sales rose 14%. It was the 7th consecutive quarter of record results.

Shapewear used to be the product that boosted sales but now it is activewear. It acquired Knights Apparel in April and that boosted activewear sales, which surged 22% in the quarter. It also saw double digit growth in Champion.

Even with currency translation headwinds, HanesBrands still raised its full year guidance to $1.66 - $1.68 from $1.61 - $1.66.

Zacks Rank #2 (Buy)
2016 expected earnings growth = 12.5%
Forward P/E = 19.5

5. eBay Inc. (EBAY - Analyst Report)

eBay operates global commerce sites, including eBay, StubHub and eBay Classifieds. It's celebrating its 20th anniversary this year.

The company beat the Zacks Consensus by 2 cents as the active buyer base rose 5% year over year to 159 million. Gross merchandise volume (GMV) rose 6%.

Free cash flow was a healthy $462 million in the quarter.

It raised full year EPS to $1.80 - $1.82 from $1.72 - $1.77. Maybe there is more to eBay than PayPal after all?

Zacks Rank #2 (Buy)
2016 expected earnings growth = 9.5%
Forward P/E = 18.7