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In the search for companies that have outperformed in a persistent way, we ran a screen on stocks from the healthcare sector for those that have seen a persistence of days in which the stock beat the S&P 500 benchmark over the last month and little persistence in underperforming the S&P 500, i.e. long winning streaks and short losing streaks, as measured by a ratio of the longest winning streak to the longest losing streak.

We then screened these stocks for those that have also seen significant net institutional buying over the current quarter.

Although past performance is no guarantee of future results, winning streaks may indicate upward momentum and positive sentiment.

Interactive Chart: Press Play to compare changes in analyst ratings over the last two years for the stocks mentioned below. Analyst ratings sourced from Zacks Investment Research.‬


We also created a price-weighted index of the stocks mentioned below, and monitored the performance of the list relative to the S&P 500 index over the last month. To access a complete analysis of this list's recent performance, click here.



Do you think these stocks will keep winning? Use this list as a starting-off point for your own analysis.

List sorted by net institutional purchases as a percent of share float.

1. Optimer Pharmaceuticals, Inc. (NASDAQ:OPTR):
Focuses on discovering, developing, and commercializing hospital specialty products worldwide. Market cap of $729.76M. Net institutional shares purchased over the current quarter at 7.0M, which is 16.56% of the company's 42.26M share float. The stock's longest winning streak over the last month was 7 days, while the longest losing streak was 3 days, or a win streak/lose streak ratio of 2.33. The stock is a short squeeze candidate, with a short float at 15.87% (equivalent to 8.3 days of average volume). The stock has had a couple of great days, gaining 22.44% over the last week.

2. Ampio Pharmaceuticals, Inc. (NYSEMKT:AMPE): Develops drugs for metabolic, eye, kidney, inflammation, and central nervous system diseases. Market cap of $253.88M. Net institutional shares purchased over the current quarter at 1.1M, which is 8.18% of the company's 13.44M share float. The stock's longest winning streak over the last month was 5 days, while the longest losing streak was 1 day, or a win streak/lose streak ratio of 5.0. The stock is a short squeeze candidate, with a short float at 7.93% (equivalent to 10.47 days of average volume). The stock has had a couple of great days, gaining 7.8% over the last week.

3. Threshold Pharmaceuticals Inc. (NASDAQ:THLD): Engages in the discovery and development of drugs targeting the microenvironment of solid tumors for patients living with cancer. Market cap of $85.36M. Net institutional shares purchased over the current quarter at 1.2M, which is 4.31% of the company's 27.81M share float. The stock's longest winning streak over the last month was 6 days, while the longest losing streak was 1 day, or a win streak/lose streak ratio of 6.0. The stock has had a couple of great days, gaining 15.23% over the last week.

*Institutional data sourced from Fidelity, price data sourced from Yahoo! Finance, all other data sourced from Finviz.

Disclosure: I have no positions in any stocks mentioned, and no plans to initiate any positions within the next 72 hours.