Yes have been through this with Fidelity on multiple securities. It is a designation coming from OTC Markets. Basically any OTC that doesn't file with SEC now being flagged. Also it's not a change at Fido it's a change at OTC Markets. All my brokers stopped trading the same securities at the same time. Not just Syncora. Also e.g. CNTE, a bunch of post-reorgs, etc. Don't know why they got more restrictive all the sudden. It started around Nov or Dec 2016.
Fidelity hasn't been able to help me work around it or do an opt-out.
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