The 10 best stock pickers that you should have listened to in 2018

Industry: Healthcare

Success Rate: 68%

Average Return: 7.9%

Noteworthy recommendation: Nuvectra (NVTR)

On March 16, O'Brien upgraded Ohio-based Nuvectra from "hold" to "buy." Shares of the medical-device neurostimulation company surged by an impressive 70.9% over the next three months. O'Brien has since reiterated his NVTR "buy" rating eight more times.

Source: TipRanks

Industry: Healthcare

Success Rate: 76%

Average Return: 9.9%

Noteworthy recommendation: Amedisys (AMED)

Wiederhorn's "buy" recommendation of Amedisys, one of the largest hospice-care providers in the US, was his most profitable call last year. From May 9 until August 9, shares jumped 57.2%.

Source: TipRanks

Industry: Technology

Success Rate: 72%

Average Return: 10.3%

Noteworthy recommendation: Twilio (TWLO)

Davis maintained his "buy" rating on the cloud-communications platform on February 14. Twilio's positioning is "much better than the ardent bears would lead you to believe," he said at the time. The stock gained 70.9% in the three months after Davis' call.

Source: TipRanks

Industry: Technology

Success Rate: 74%

Average Return: 12%

Noteworthy recommendation: Alteryx (AYX)

Bracelin's most profitable recommendation of 2018 (with a three-month profit of 77.6%) was for the data-software stock Alteryx on May 21. He upgraded the stock from "hold" to "buy," citing "strong" Q1 results and a favorable risk/reward.

Bracelin still has a "buy" rating on Alteryx with a $74 price target (8% upside potential). He believes revenue can quadruple to $600M+ as AYX becomes integral for predictive analytics and AI modeling.

Source: TipRanks

Industry: Technology

Success Rate: 79%

Average Return: 12.7%

Noteworthy recommendation: Okta (OKTA)

Owens reiterated his "buy" rating on the cybersecurity stock Okta on March 18. In the subsequent three months from his call, the stock climbed 42.5%. In his most recent "buy" call, he gave a price target of $76 — 4% above shares were trading.

Source: TipRanks

Industry: Technology

Success Rate: 69%

Average Return: 12.8%

Noteworthy recommendation: Catasys (CATS)

Close's most-profitable call last year was initiating specialized health-manager Catasys with a "buy" rating on June 18. CATS combines big data, analytics, and AI technology with human interaction to help those with untreated behavioral conditions and chronic medical disease. Close made a 68.4% profit on his CATS recommendation in three months.

Source: TipRanks

Industry: Financial

Success Rate: 90%

Average Return: 16.4%

Noteworthy recommendation: Innovative Industrial Properties (IIPR)

Shares in cannabis-REIT Innovative Industrial Properties soared 37.8% following Manaker's "buy" recommendation on March 29. Manaker has a 100% success rate on IIPR and an average return of 76.4%. He reiterated his "buy" rating for the medical-cannabis real-estate stock again in October.

Source: TipRanks

Industry: Healthcare

Success Rate: 57%

Average Return: 24.4%

Noteworthy recommendation: Tandem Diabetes Care (TNDM)

Schenkel's best call of 2018 was his "buy" rating for Tandem Diabetes. He made the call on March 28. In the next three months, shares of the insulin-pump manufacturer soared 370%.

Source: TipRanks

Industry: Healthcare

Success Rate: 64%

Average Return: 36%

Noteworthy recommendation: Tandem Diabetes Care (TNDM)

Johnson's recommendation on medical-device manufacturer Tandem Diabetes proved a success. Shares rose by a whopping 480% in the three months from his recommendation on March 23. In the last year, TNDM shares have spiked 1,464% to $43.96.

Source: TipRanks