How many shares of CIEN does AMERICAN CENTURY COMPANIES INC own?

As of 2026-Q2, AMERICAN CENTURY COMPANIES INC holds 1.9M shares of CIEN (CIENA CORP).

What is AMERICAN CENTURY COMPANIES INC's CIEN position worth?

As of 2026-Q2, AMERICAN CENTURY COMPANIES INC's CIEN position is worth $908.4M.

Is AMERICAN CENTURY COMPANIES INC buying or selling CIEN?

In 2026-Q2, AMERICAN CENTURY COMPANIES INC increased their CIEN position (+245.6% change in shares).

When did AMERICAN CENTURY COMPANIES INC first buy CIEN?

Based on available 13F filings, AMERICAN CENTURY COMPANIES INC first reported a position in CIEN in 2018-Q4. They have held the position across 31 quarters.

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AMERICAN CENTURY COMPANIES INC

CIEN
31 quarters

Position history for AMERICAN CENTURY COMPANIES INC's holdings in CIENA CORP

Current Value

$908.4M

Current Shares

1.9M

Total Value Change

+$897.7M

Total Shares Change

+1.5M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	1.9M	+245.6%	$908.4M	0.4%	$490.56	61
2026-Q1	Increased	535,842	+112.0%	$208M	0.1%	$333.07	59
2025-Q4	Decreased	252,751	-56.9%	$59.1M	0.0%	$238.36	0
2025-Q3	Increased	585,747	+22.4%	$85.3M	0.0%	$144.12	36
2025-Q2	Increased	478,756	+877.5%	$38.9M	0.0%	$82.12	47
2025-Q1	Increased	48,976	+9.5%	$3M	0.0%	$61.56	29
2024-Q4	Increased	44,711	+1.5%	$3.8M	0.0%	$85.01	27
2024-Q3	Increased	44,042	+2.0%	$2.7M	0.0%	$61.81	27
2024-Q2	Decreased	43,191	-86.5%	$2.1M	0.0%	$48.18	0
2024-Q1	Decreased	320,565	-28.4%	$15.9M	0.0%	$49.45	0
2023-Q4	Increased	447,821	+7.8%	$20.2M	0.0%	$45.01	31
2023-Q3	Decreased	415,561	-31.2%	$19.6M	0.0%	$47.26	0
2023-Q2	Increased	603,687	+8.5%	$25.7M	0.0%	$42.56	31
2023-Q1	Increased	556,351	+28.3%	$29.2M	0.0%	$51.95	36
2022-Q4	Increased	433,526	+2122.2%	$22.1M	0.0%	$50.98	46
2022-Q3	Decreased	19,509	-0.0%	$789,000	0.0%	$40.84	0
2022-Q2	Increased	19,514	+13.4%	$892,000	0.0%	$45.60	28
2022-Q1	Increased	17,204	+11.0%	$1M	0.0%	$61.36	28
2021-Q4	Increased	15,496	+15.6%	$1.2M	0.0%	$76.90	29
2021-Q3	Increased	13,411	+14.8%	$689,000	0.0%	$51.32	28
2021-Q2	Increased	11,679	+22.6%	$664,000	0.0%	$57.32	30
2021-Q1	Decreased	9,524	-57.5%	$521,000	0.0%	$54.71	0
2020-Q4	Decreased	22,417	-61.4%	$1.2M	0.0%	$52.49	0
2020-Q3	Increased	58,024	+19.4%	$2.3M	0.0%	$39.99	31
2020-Q2	Decreased	48,592	-4.2%	$2.6M	0.0%	$53.15	0
2020-Q1	Decreased	50,727	-44.3%	$2M	0.0%	$41.08	0
2019-Q4	Decreased	91,056	-67.2%	$3.9M	0.0%	$42.64	0
2019-Q3	Decreased	277,350	-14.4%	$10.9M	0.0%	$39.34	0
2019-Q2	Decreased	323,869	-17.6%	$13.3M	0.0%	$41.13	0
2019-Q1	Increased	392,881	+23.8%	$14.7M	0.0%	$37.34	34
2018-Q4	New	317,303	-	$10.8M	0.0%	$33.10	38

Other major holders of CIEN: BNP PARIBAS FINANCIAL MARKETS, FMR LLC, BlackRock, Inc., JPMORGAN CHASE & CO

CIEN31 quarters

CIEN
31 quarters