State of Michigan Retirement System’s Ciena CIEN Stock Holding History

State of Michigan Retirement System’s Portfolio CIEN Stock Details CIEN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$14.3M	Buy	36,800 +3,504	+11%	+$1.07M	0.08%	231
2025 Q4	$7.79M	Sell	33,296 -400	-1%	-$77.6K	0.04%	330
2025 Q3	$4.91M	Sell	33,696 -500	-1%	-$50.9K	0.02%	438
2025 Q2	$2.78M	Buy	34,196 +200	+0.6%	+$14.3K	0.01%	558
2025 Q1	$2.05M	Sell	33,996 -200	-0.6%	-$15.8K	0.01%	626
2024 Q4	$2.9M	Buy	34,196 +100	+0.3%	+$7.18K	0.02%	546
2024 Q3	$2.1M	Sell	34,096 -700	-2%	-$36.9K	0.01%	640
2024 Q2	$1.68M	Sell	34,796 -800	-2%	-$38K	0.01%	685
2024 Q1	$1.76M	Buy	35,596 +100	+0.3%	+$5.28K	0.01%	689
2023 Q4	$1.6M	Sell	35,496 -200	-0.6%	-$8.82K	0.01%	695
2023 Q3	$1.69M	Sell	35,696 -1,000	-3%	-$44.1K	0.01%	637
2023 Q2	$1.56M	Sell	36,696 -800	-2%	-$36.4K	0.01%	681
2023 Q1	$1.97M	Sell	37,496 -200	-0.5%	-$9.98K	0.01%	597
2022 Q4	$1.92M	Hold	37,696	–	–	0.01%	600
2022 Q3	$1.52M	Sell	37,696 -1,000	-3%	-$48K	0.01%	632
2022 Q2	$1.77M	Sell	38,696 -600	-2%	-$31.1K	0.01%	596
2022 Q1	$2.38M	Buy	39,296 +33	+0.1%	+$2.16K	0.01%	558
2021 Q4	$3.02M	Buy	39,263 +500	+1%	+$30.9K	0.02%	530
2021 Q3	$1.99M	Sell	38,763 -300	-0.8%	-$16.7K	0.01%	619
2021 Q2	$2.22M	Sell	39,063 -18,400	-32%	-$1.01M	0.01%	605
2021 Q1	$3.14M	Buy	57,463 +1,200	+2%	+$64.6K	0.02%	551
2020 Q4	$2.97M	Buy	56,263 +300	+0.5%	+$13.3K	0.02%	522
2020 Q3	$2.22M	Hold	55,963	–	–	0.02%	546
2020 Q2	$3.03M	Buy	55,963 +13,063	+30%	+$649K	0.03%	419
2020 Q1	$1.71M	Sell	42,900 -2,600	-6%	-$107K	0.02%	481
2019 Q4	$1.94M	Buy	45,500 +500	+1%	+$19.1K	0.02%	573
2019 Q3	$1.76M	Buy	45,000 +2,600	+6%	+$109K	0.02%	580
2019 Q2	$1.74M	Sell	42,400 -8,900	-17%	-$342K	0.02%	582
2019 Q1	$1.92M	Buy	51,300 +700	+1%	+$27.2K	0.02%	597
2018 Q4	$1.72M	Sell	50,600 -2,100	-4%	-$66.6K	0.02%	590
2018 Q3	$1.65M	Sell	52,700 -100	-0.2%	-$2.8K	0.01%	689
2018 Q2	$1.4M	Buy	52,800 +200	+0.4%	+$5.08K	0.01%	748
2018 Q1	$1.36M	Buy	52,600 +1,300	+3%	+$30.6K	0.01%	734
2017 Q4	$1.07M	Sell	51,300 -2,000	-4%	-$42.4K	0.01%	806
2017 Q3	$1.17M	Sell	53,300 -5,100	-9%	-$122K	0.01%	792
2017 Q2	$1.46M	Buy	58,400 +1,000	+2%	+$24K	0.01%	744
2017 Q1	$1.35M	Buy	57,400 +1,300	+2%	+$31.9K	0.01%	767
2016 Q4	$1.37M	Buy	56,100 +500	+0.9%	+$10.9K	0.01%	761
2016 Q3	$1.21M	Buy	55,600 +3,700	+7%	+$77.2K	0.01%	783
2016 Q2	$973K	Buy	51,900 +300	+0.6%	+$5.43K	0.01%	834
2016 Q1	$981K	Buy	51,600 +1,500	+3%	+$27.7K	0.01%	829
2015 Q4	$1.04M	Sell	50,100 -6,200	-11%	-$142K	0.01%	790
2015 Q3	$1.17M	Buy	56,300 +2,700	+5%	+$62.8K	0.01%	800
2015 Q2	$1.27M	Buy	53,600 +4,500	+9%	+$103K	0.01%	824
2015 Q1	$948K	Sell	49,100 -1,600	-3%	-$31.9K	0.01%	883
2014 Q4	$984K	Buy	50,700 +100	+0.2%	+$1.67K	0.01%	882
2014 Q3	$846K	Buy	50,600 +1,100	+2%	+$21.6K	0.01%	897
2014 Q2	$1.07M	Buy	49,500 +100	+0.2%	+$2.05K	0.01%	863
2014 Q1	$1.12M	Buy	49,400 +1,100	+2%	+$25.9K	0.01%	845
2013 Q4	$1.16M	Buy	48,300 +200	+0.4%	+$4.76K	0.01%	832
2013 Q3	$1.2M	Buy	48,100 +1,400	+3%	+$31.5K	0.01%	782
2013 Q2	$907K	Buy	+46,700	New	+$777K	0.01%	833