Exchange says Nasdaq/Finra TRF — a service dark pools and other off-exchange venues use to report stock trades — is experiencing technical issue.

“Nasdaq is working on failing over affected connections and customers may see further disconnections as this process takes place,” Nasdaq says in notice at 9:32am.

NOTE: Systems like Nasdaq TRF knit together U.S. stock trading, which is spread across dozens of markets. Though trades could happen even without the TRF, they might not get recorded publicly.

Seriously!!