Volume does not prove news leaked. If actual approval had leaked, confidentiality would be compromised and NWBO would likely be forced to disclose because that would be material information. And even if there was no leak, if NWBO itself already knew formal approval had been granted, that would also likely require a PR. A public company does not get to sit on market moving approval news while traders are left guessing. That is exactly the kind of thing that can draw SEC scrutiny. So the lack of a PR cuts against the idea that approval has either leaked or already been communicated to NWBO. Volume may show speculation, but speculation is not leaked news.