Historical shareholding details of Grantham, Mayo, Van Otterloo & Co., LLC holdings in CIENA Corp. (CIEN)

Monthly changes of Grantham, Mayo, Van Otterloo & Co., LLC 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	Grantham, Mayo, Van Otterloo & Co., Llc	543,556	0.38%

Sep 30, 2024	Grantham, Mayo, Van Otterloo & Co., Llc	657,763	0.46%

Jun 30, 2024	Grantham, Mayo, Van Otterloo & Co., Llc	602,850	0.42%

Mar 31, 2024	Grantham, Mayo, Van Otterloo & Co., Llc	578,023	0.40%

Dec 31, 2023	Grantham, Mayo, Van Otterloo & Co., Llc	378,194	0.26%

Sep 30, 2023	Grantham, Mayo, Van Otterloo & Co., Llc	394,136	0.27%

Jun 30, 2023	Grantham, Mayo, Van Otterloo & Co., Llc	224,363	0.15%

Mar 31, 2023	Grantham, Mayo, Van Otterloo & Co., Llc	224,363	0.15%

Dec 31, 2022	Grantham, Mayo, Van Otterloo & Co., Llc	115,262	0.08%