What does CUSIP 171779309 represent in this 13F holders report?

CUSIP 171779309 is the security identifier for CIEN - CIENA CORP - Common Stock used to aggregate holder disclosures.

How many institutions held CIEN - CIENA CORP - Common Stock in Q1 2016?

260 institutional investors reported CIEN - CIENA CORP - Common Stock for Q1 2016. Use the holders table for investor-level position and value details.

CIENA CORP - Common Stock (CIEN)

CUSIP: 171779309

Q1 2016 13F Holders as of 31 Mar 2016

Type / Class: Equity / Common Stock
Shares outstanding: 140,931,584
Total 13F shares: 138,574,763
Share change: -3,222,342
Total reported value: $2,634,656,754
Put/Call ratio: 61%
Price per share: $19.02
Number of holders: 260
Value change: -$74,689,389
Number of buys: 135
Number of sells: 146

Quarterly Holders Quick Answers

What is CUSIP 171779309?
CUSIP 171779309 identifies CIEN - CIENA CORP - Common Stock in SEC institutional holdings data.

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Related Filing Research

Latest 13F filings for newly reported positions.
Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
Latest 10-Q/10-K reports for financial context tied to this issuer.
Recent insider transactions for executive and insider activity.
SEC investors directory and top value investors for manager drilldown.
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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2016
Previous quarter: Q4 2015

Recent filing periods for CUSIP 171779309:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of CIEN - CIENA CORP - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
VANGUARD GROUP INC	13F	Company	7.8%	10,962,207	$226,807,000	—	31 Dec 2015	13F
Bank of New York Mellon Corp	13F	Company	5%	7,073,291	$146,347,000	—	31 Dec 2015	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	4.9%	6,967,616	$144,160,000	—	31 Dec 2015	13F
BlackRock Fund Advisors	13F	Company	4.8%	6,751,254	$139,683,000	—	31 Dec 2015	13F
Invesco Ltd.	13F	Company	4%	5,667,555	$117,262,000	—	31 Dec 2015	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	3.9%	5,482,413	$113,431,000	—	31 Dec 2015	13F
PARNASSUS INVESTMENTS, LLC	13F	Company	3.5%	4,900,000	$101,381,000	—	31 Dec 2015	13F
JPMORGAN CHASE & CO	13F	Company	3.2%	4,542,550	$93,985,000	—	31 Dec 2015	13F
STATE STREET CORP	13F	Company	2.8%	3,994,211	$82,637,000	—	31 Dec 2015	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	2.5%	3,569,569	$73,854,000	—	31 Dec 2015	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	2.4%	3,413,920	$70,634,000	—	31 Dec 2015	13F
BANK OF AMERICA CORP /DE/	13F	Company	2.1%	2,974,071	$61,534,000	—	31 Dec 2015	13F
TEACHERS ADVISORS, LLC	13F	Company	2.1%	2,952,802	$61,093,000	—	31 Dec 2015	13F
Alyeska Investment Group, L.P.	13F	Company	1.8%	2,544,707	$52,650,000	—	31 Dec 2015	13F
Apex Capital Management	13F	Company	1.8%	2,533,082	$52,409,000	—	31 Dec 2015	13F
SCHRODER INVESTMENT MANAGEMENT GROUP	13F	Company	1.7%	2,416,400	$49,995,000	—	31 Dec 2015	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.7%	2,408,181	$49,826,000	—	31 Dec 2015	13F
NORTHERN TRUST CORP	13F	Company	1.5%	2,171,701	$44,933,000	—	31 Dec 2015	13F
CITADEL ADVISORS LLC	13F	Company	1.5%	2,151,800	$44,521,000	—	31 Dec 2015	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	1.5%	2,097,162	$43,390,000	—	31 Dec 2015	13F
WealthPLAN Partners, LLC	13F	Company	0%	6,000	$41,462,000	—	31 Dec 2015	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	1.4%	1,998,374	$41,346,000	—	31 Dec 2015	13F
WESTFIELD CAPITAL MANAGEMENT CO LP	13F	Company	1.4%	1,979,127	$40,948,000	—	31 Dec 2015	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	1.3%	1,811,735	$37,485,000	—	31 Dec 2015	13F
COLUMBUS CIRCLE INVESTORS	13F	Company	1.2%	1,758,067	$36,374,000	—	31 Dec 2015	13F
Neuberger Berman Group LLC	13F	Company	1.2%	1,659,567	$34,336,000	—	31 Dec 2015	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.1%	1,530,084	$31,658,000	—	31 Dec 2015	13F
ARGENT CAPITAL MANAGEMENT LLC	13F	Company	1%	1,479,595	$30,613,000	—	31 Dec 2015	13F
HENNESSY ADVISORS INC	13F	Company	1%	1,424,100	$29,465,000	—	31 Dec 2015	13F
DEUTSCHE BANK AG\	13F	Company	0.97%	1,362,773	$28,194,000	—	31 Dec 2015	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.93%	1,309,947	$27,103,000	—	31 Dec 2015	13F
Gotham Asset Management, LLC	13F	Company	0.92%	1,294,723	$26,788,000	—	31 Dec 2015	13F
FMR LLC	13F	Company	0.77%	1,089,300	$22,537,000	—	31 Dec 2015	13F
NORGES BANK	13F	Company	0.74%	1,046,680	$21,656,000	—	31 Dec 2015	13F
PLATINUM INVESTMENT MANAGEMENT LTD	13F	Company	0.67%	937,377	$19,394,000	—	31 Dec 2015	13F
CREDIT SUISSE AG/	13F	Company	0.66%	928,919	$19,219,000	—	31 Dec 2015	13F
Carlson Capital, L.P.	13F	Company	0.64%	900,000	$18,621,000	—	31 Dec 2015	13F
CANADA PENSION PLAN INVESTMENT BOARD	13F	Company	0.58%	813,400	$16,829,000	—	31 Dec 2015	13F
AXA S.A.	13F	Company	0.56%	794,610	$16,441,000	—	31 Dec 2015	13F
JANUS HENDERSON GROUP PLC	13F	Company	0.54%	763,627	$15,796,000	—	31 Dec 2015	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.54%	762,458	$15,774,000	—	31 Dec 2015	13F
BRAUN STACEY ASSOCIATES INC	13F	Company	0.54%	761,165	$15,749,000	—	31 Dec 2015	13F
CRAMER ROSENTHAL MCGLYNN LLC	13F	Company	0.53%	752,571	$15,571,000	—	31 Dec 2015	13F
EMERALD MUTUAL FUND ADVISERS TRUST	13F	Company	0.53%	742,304	$15,358,000	—	31 Dec 2015	13F
BlackRock Investment Management, LLC	13F	Company	0.5%	710,584	$14,702,000	—	31 Dec 2015	13F
EMERALD ADVISERS, LLC	13F	Company	0.5%	706,995	$14,628,000	—	31 Dec 2015	13F
BARCLAYS PLC	13F	Company	0.5%	697,935	$13,959,000	—	31 Dec 2015	13F
BROADVIEW ADVISORS LLC	13F	Company	0.46%	645,725	$13,360,000	—	31 Dec 2015	13F
PICTON MAHONEY ASSET MANAGEMENT	13F	Company	0.42%	596,661	$12,345,000	—	31 Dec 2015	13F
FEDERATED HERMES, INC.	13F	Company	0.42%	595,829	$12,328,000	—	31 Dec 2015	13F

Institutional Holders of CIENA CORP - Common Stock (CIEN) as of Q1 2016

As of 31 Mar 2016, CIENA CORP - Common Stock (CIEN) was held by 260 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 138,574,763 shares. The largest 10 holders included VANGUARD GROUP INC, Bank of New York Mellon Corp, Invesco Ltd., BlackRock Fund Advisors, PARNASSUS INVESTMENTS /CA, ALLIANCEBERNSTEIN L.P., STATE STREET CORP, BlackRock Institutional Trust Company, N.A., WELLINGTON MANAGEMENT GROUP LLP, and TIAA CREF INVESTMENT MANAGEMENT LLC. This page lists 260 institutional shareholders reporting positions in this security for the Q1 2016 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2016 vs Q4 2015 Across Filers

Q4 2015 holders

282

Q1 2016 holders

260

Holder diff

-22

Investor	Q4 2015 Shares	Q1 2016 Shares	Share Diff	Share Chg %	Q4 2015 Value $	Q1 2016 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.