Linn Software Associates telemarketing to investors, offering software for futures trading and such. You won't get called unless someone has passed along your basic investor info for money to other telemarketers; could be another software company, but more likely an investor newsletter; probably not your brokerage.
Whoever reads this, please know how grateful I am for this great service. As I get these calls and identify them via this website, I enter them into my cell phone so when they call, I see their name (if I bother to look) and all I hear is a tiny squeak, which I can handle quite well. Thanks to everyone who participates!