According to Standard and Poor’s latest realignment, Ciena Corp. (CIEN), the telecommunications equipment maker has been removed from the S&P 500 index and has been included in the S&P MidCap 400, replacing Blyth Inc. (BTH). Visa (V) will replace Ciena in the S&P 500 Index. After the announcement, Ciena shares fell 6.64%, as negative investor sentiments [...] (CIEN) Ciena Corporation is Removed From The S&P 500