I know there are other questions about standard naming, such as this one, but so far I have not found any answers to this particular question: "What do Linear Technology's components' prefixes (e.g. LT, LTC, or LTM) indicate, other than that they are produced by Linear Technology?"
I asked my local sales representative, he did not know, and I felt too sheepish to pester him with arguably unimportant questions. However, I do not think it is random. It doesn't seem to correlate with device type (e.g. usually there are at least two different prefixes within a category like opamps, ADCs, etc.) Perhaps it has to do with the fabrication process? If anyone knows or has conjectures to offer I would appreciate hearing them.