Historical shareholding details of American Century Companies Inc holdings in CIENA Corp. (CIEN)

Monthly changes of American Century Companies Inc shareholding in CIENA Corp. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Dec 31, 2024	American Century Companies Inc	44,711	0.03%

Sep 30, 2024	American Century Companies Inc	44,042	0.03%

Jun 30, 2024	American Century Companies Inc	43,191	0.03%

Mar 31, 2024	American Century Companies Inc	320,565	0.22%

Dec 31, 2023	American Century Companies Inc	447,821	0.31%

Sep 30, 2023	American Century Companies Inc	415,561	0.29%

Jun 30, 2023	American Century Companies Inc	603,687	0.41%

Mar 31, 2023	American Century Companies Inc	556,351	0.37%