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Why IsoRay (ISR) Surged to Another Five-Year High Today (Update)

Update (4:30 p.m.): Updated with Thursday market close information.

NEW YORK (TheStreet) -- IsoRay  (ISR) surged to a new five-year high of $3.69 on Thursday as the company continued to benefit from its announcement of a major milestone in tumor treatment on Wednesday.

IsoRay announced the world's first treatment of a tumor in a pediatric patient through the use of multiple Cesium-131 sutured seed meshes for internal radiation therapy. Dr. Anthony Crimaldi at Levine Cancer Institute in Charlotte successfully performed the implant using IsoRay Medical's Cesium-131 brachytherapy mesh.

The patient was a 12-year-old male with a type of childhood kidney tumor.

The stock closed at $3.30, up 29.41% or 75 cents, from its previous close of $2.55. The volume of more than 111 million for the day dwarfed its average of 2,946,970.

Must Read: Warren Buffett's 10 Favorite Stocks

STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more. ISR Chart

ISR data by YCharts


STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more.
ISR data by YCharts

Editor's Note: Any reference to TheStreet Ratings and its underlying recommendation does not reflect the opinion of TheStreet, Inc. or any of its contributors including Jim Cramer or Stephanie Link.

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