The collateral shall immediately be subject to the pledge, and the pledge shall constitute a lien and security interest which immediately shall attach to the collateral and be effective, binding, and enforceable against the pledgor, its successors, purchasers of the collateral, creditors, and all others asserting the rights therein, to the extent set forth, and in accordance with, the pledge document irrespective of whether those parties have notice of the pledge and without the need for any physical delivery, recordation, filing, or further act.
Ca. Health and Saf. Code § 33641.5