AMS vs NTRA

American Shared Hospital Services

American Shared Hospital Services leases radiosurgery and radiation therapy equipment to health care providers. The company offers radiosurgery equipment for the Gamma Knife stereotactic radiosurgery, a non-invasive procedure to treat malignant and benign brain tumors, and arteriovenous malformations, as well as for trigeminal neuralgia. It also provides financing services for Leksell Gamma Knife units. In addition, the company offers proton beam radiation therapy services in Orlando, Florida and Long Beach, California, as well as offers planning, installation, reimbursement, and marketing support services to its customers. As of March 1, 2021, it had thirteen operating Gamma Knife units located in the United States, as well as two in South America in Lima, Peru and Guayaquil, Ecuador. The company also operates one PBRT system. American Shared Hospital Services was founded in 1980 and is headquartered in San Francisco, California.

Natera Inc.

Natera, Inc., a diagnostics company, develops and commercializes molecular testing services worldwide. It offers Panorama, a non-invasive prenatal test that screens for chromosomal abnormalities of a fetus with a blood draw from the mother, as well as twin pregnancies for zygosity; Vistara, a single-gene mutations screening test to identify single-gene disorder; Horizon carrier screening to determine carrier status for various genetic diseases; and Spectrum to analyze chromosomal anomalies or inherited genetic conditions during an in vitro fertilization cycle. The company also provides Anora miscarriage test products to analyze fetal chromosomes to understand the cause of miscarriage; and non-invasive paternity testing products to determine paternity by gestation using a blood draw from the pregnant mother and alleged father. In addition, it offers Constellation, a cloud-based software product that allows laboratory customers to gain access through the cloud to the company's algorithms and bioinformatics in order to validate and launch tests; Signatera, a circulating tumor DNA technology that screen for a generic set of mutations independent of an individual's tumor; and Prospera used to assess organ transplant rejection. The company offers products through its direct sales force, as well as through a network of approximately 100 laboratory and distribution partners. It has a partnership agreement with BGI Genomics Co., Ltd. to develop, manufacture, and commercialize NGS-based genetic testing assays; and Foundation Medicine, Inc. to develop and commercialize personalized circulating tumor DNA monitoring assays. The company was formerly known as Gene Security Network, Inc. and changed its name to Natera, Inc. in 2012. Natera, Inc. was founded in 2003 and is headquartered in San Carlos, California.