ERHC Energy Inc (ERHE)

[tryoty]

"rig(dwd) = jdz"

dwd previously meant diagnostics while drilling, thus the hint "rig". That's gotta be the drillship Deep Water Discovery

"cvx != release from jdz"

This clearly contradicts the rumor that CVX has released the drillship. "CVX not released from JDZ"

Siren(js) need I say more?

This either means Joe is crying fire in a theatre again or maybe Joe will hear sirens when the SEC comes to get him? Don't care either way.