The short answer: M281 and (especially) M254 appear to have more commercial potential than anyone (including MNTA) previously thought. For investors, this has offset the demise of the Copaxone program as a material profit engine and the stretched-out target date for product revenue from the FoB programs.
....something is helping to support the current price. Is it the hope for sale of assets or acquisition?
Among several topics discussed - let's add this one from MNTA's recent patent estate -
METHODS FOR THE TREATMENT OF NEURODEGENERATION 2017-06-09
[Neurodegeneration is the progressive loss of structure or function of neurons, including death of neurons. Many neurodegenerative diseases including amyotrophic lateral sclerosis, Parkinson's, Alzheimer's, and Huntington's occur as a result of neurodegenerative processes.]
Abstract: The invention encompasses the discovery that Fc-containing polypeptides that include branched glycans and that are sialylated on the branched glycan (e.g., on an a 1,3 and/or a 1,6 arm in the Fc region's N-linked glycosylation site), with, e.g., a NeuAc-a 2,6-Gal or NeuAc-a 2,3-Gal terminal linkage, are useful in treating neurodegeneration, e.g., in the treatment of neurodegenerative diseases such as Alzheimer's Disease.