In addition, investors will not participate in any appreciation of the underlying indices. Instead, the securities offer ADTEC AD-MINISDRU2 an opportunity to earn a contingent quarterly payment equal to at least 3. AES E-Library » Complete Journal: Volume 40 Issue 5 The securities may be redeemed prior to maturity for the stated principal amount per security plus any contingent quarterly payment otherwise due with respect to the related quarterly monitoring period, and the payment at maturity will vary depending on[…]