Diamond Hill Capital Management
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Diamond Hill Capital Management’s Ciena CIEN Stock Holding History

Diamond Hill Capital Management’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 		$22.7M Sell
58,545
-124,032
-68% -$37.9M 0.14% 102
2025
Q4 		$42.7M Sell
182,577
-430,284
-70% -$83.5M 0.22% 75
2025
Q3 		$89.3M Sell
612,861
-143,710
-19% -$14.6M 0.42% 56
2025
Q2 		$61.5M Sell
756,571
-66,510
-8% -$4.77M 0.28% 63
2025
Q1 		$49.7M Sell
823,081
-58,050
-7% -$4.59M 0.23% 71
2024
Q4 		$74.7M Sell
881,131
-854,828
-49% -$61.3M 0.33% 61
2024
Q3 		$107M Sell
1,735,959
-231,551
-12% -$12.2M 0.43% 56
2024
Q2 		$94.8M Sell
1,967,510
-17,139
-0.9% -$813K 0.41% 56
2024
Q1 		$98.1M Sell
1,984,649
-302,712
-13% -$16M 0.4% 60
2023
Q4 		$103M Sell
2,287,361
-14,268
-0.6% -$629K 0.45% 61
2023
Q3 		$109M Buy
2,301,629
+125,341
+6% +$5.52M 0.53% 61
2023
Q2 		$92.5M Buy
2,176,288
+604,677
+38% +$27.5M 0.42% 65
2023
Q1 		$82.5M Sell
1,571,611
-6,124
-0.4% -$306K 0.39% 66
2022
Q4 		$80.4M Buy
1,577,735
+47,953
+3% +$2.17M 0.37% 72
2022
Q3 		$61.8M Buy
+1,529,782
New +$73.5M 0.3% 74

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