In an event which is subject to proration, a company may offer preference to beneficial owners of an "odd lot" (typically 99 shares or less). "Ownership" is defined as having a direct financial interest by SSN. These holders have the ability to have all of their tendered shares accepted in the offer. To receive this preference, you must only hold a total number of shares across all your accounts that meet the odd lot criteria — and you need to tender your full position.