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 Q4 2017?

282 institutional investors reported CIEN - CIENA CORP - Common Stock for Q4 2017. Use the holders table for investor-level position and value details.

CIENA CORP - Common Stock (CIEN)

CUSIP: 171779309

Q4 2017 13F Holders as of 31 Dec 2017

Type / Class: Equity / Common Stock
Shares outstanding: 141,483,681
Total 13F shares: 150,178,949
Share change: -5,321,666
Total reported value: $3,143,475,684
Put/Call ratio: 79%
Price per share: $20.93
Number of holders: 282
Value change: -$121,805,010
Number of buys: 133
Number of sells: 144

Security key

171779309

Report period

Q4 2017

Institutions

282

Top holders

CIEN full security history Newer quarter: Q1 2018 Previous quarter: Q3 2017 CIENA CORP SEC filings CIENA CORP company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 171779309

Newer quarter: Q1 2018 Previous quarter: Q3 2017

Recent filing periods:

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

Ownership snapshot

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

Grouped by holder across the latest SEC ownership disclosures. Start with the largest verified stakes, then open the linked filing trail.

Lead holder

BlackRock Finance, Inc.

13D/G signal

—

Evidence rows

Latest as of

30 Sep 2017

13F Lead comparable stake: 11%

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock Finance, Inc.	13F Company 13F	11%	$339,884,000 15,470,411 shares	—	30 Sep 2017
Bank of New York Mellon Corp	13F Company 13F	9.5%	$295,292,000 13,440,646 shares	—	30 Sep 2017
VANGUARD GROUP INC	13F Company 13F	8.9%	$277,129,000 12,613,987 shares	—	30 Sep 2017
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	5.2%	$160,852,000 7,321,436 shares	—	30 Sep 2017
Invesco Ltd.	13F Company 13F	4%	$125,843,000 5,727,942 shares	—	30 Sep 2017
STATE STREET CORP	13F Company 13F	3.3%	$102,346,000 4,658,359 shares	—	30 Sep 2017
Carlson Capital, L.P.	13F Company 13F	3.2%	$100,588,000 4,578,434 shares	—	30 Sep 2017
TIAA CREF INVESTMENT MANAGEMENT LLC	13F Company 13F	3.2%	$100,380,000 4,568,941 shares	—	30 Sep 2017
Neuberger Berman Group LLC	13F Company 13F	3%	$92,657,000 4,217,455 shares	—	30 Sep 2017
TEACHERS ADVISORS, LLC	13F Company 13F	2.5%	$78,477,000 3,571,997 shares	—	30 Sep 2017
ALLIANCEBERNSTEIN L.P.	13F Company 13F	2.4%	$75,149,000 3,420,515 shares	—	30 Sep 2017
CITADEL ADVISORS LLC	13F Company 13F	2.1%	$66,464,000 3,025,230 shares	—	30 Sep 2017
SCHRODER INVESTMENT MANAGEMENT GROUP	13F Company 13F	2.1%	$65,822,000 2,982,417 shares	—	30 Sep 2017
VOYA INVESTMENT MANAGEMENT LLC	13F Company 13F	2.1%	$65,364,000 2,975,126 shares	—	30 Sep 2017
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	2%	$62,099,000 2,826,524 shares	—	30 Sep 2017
FIL Ltd	13F Company 13F	2%	$61,335,000 2,791,748 shares	—	30 Sep 2017
WESTFIELD CAPITAL MANAGEMENT CO LP	13F Company 13F	1.8%	$56,996,000 2,594,285 shares	—	30 Sep 2017
NORTHERN TRUST CORP	13F Company 13F	1.6%	$49,881,000 2,270,365 shares	—	30 Sep 2017
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	1.5%	$47,536,000 2,163,661 shares	—	30 Sep 2017
VICTORY CAPITAL MANAGEMENT INC	13F Company 13F	1.5%	$46,808,000 2,130,544 shares	—	30 Sep 2017
Roystone Capital Management LP	13F Company 13F	1.5%	$46,517,000 2,117,300 shares	—	30 Sep 2017
THRIVENT FINANCIAL FOR LUTHERANS	13F Company 13F	1.3%	$41,144,000 1,872,742 shares	—	30 Sep 2017
PARNASSUS INVESTMENTS, LLC	13F Company 13F	1.2%	$37,349,000 1,700,000 shares	—	30 Sep 2017
Rubric Capital Management LP	13F Company 13F	1.1%	$33,373,000 1,519,025 shares	—	30 Sep 2017
FMR LLC	13F Company 13F	1%	$31,580,000 1,437,440 shares	—	30 Sep 2017
NORGES BANK	13F Company 13F	0.97%	$30,088,000 1,369,490 shares	—	30 Sep 2017
MAPLELANE CAPITAL, LLC	13F Company 13F	0.95%	$29,440,000 1,340,000 shares	—	30 Sep 2017
PEREGRINE CAPITAL MANAGEMENT LLC	13F Company 13F	0.92%	$28,509,000 1,297,632 shares	—	30 Sep 2017
GOLDMAN SACHS GROUP INC	13F Company 13F	0.89%	$27,544,000 1,253,735 shares	—	30 Sep 2017
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.88%	$27,394,000 1,246,948 shares	—	30 Sep 2017
BECKER CAPITAL MANAGEMENT INC	13F Company 13F	0.87%	$27,188,000 1,237,520 shares	—	30 Sep 2017
ROTHSCHILD & CO ASSET MANAGEMENT US INC.	13F Company 13F	0.83%	$25,867,000 1,177,386 shares	—	30 Sep 2017
State of New Jersey Common Pension Fund D	13F Company 13F	0.72%	$22,409,000 1,020,000 shares	—	30 Sep 2017
BANK OF AMERICA CORP /DE/	13F Company 13F	0.69%	$21,464,000 976,982 shares	—	30 Sep 2017
JPMORGAN CHASE & CO	13F Company 13F	0.66%	$20,731,000 939,355 shares	—	30 Sep 2017
ROYCE & ASSOCIATES LP	13F Company 13F	0.64%	$19,881,000 904,917 shares	—	30 Sep 2017
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	0.64%	$19,759,000 899,345 shares	—	30 Sep 2017
AMERIPRISE FINANCIAL INC	13F Company 13F	0.58%	$18,053,000 821,713 shares	—	30 Sep 2017
EMERALD ADVISERS, LLC	13F Company 13F	0.57%	$17,748,000 807,834 shares	—	30 Sep 2017
Artemis Investment Management LLP	13F Company 13F	0.5%	$15,598,000 709,812 shares	—	30 Sep 2017
Retirement Systems of Alabama	13F Company 13F	0.48%	$15,014,000 683,402 shares	—	30 Sep 2017
EMERALD MUTUAL FUND ADVISERS TRUST	13F Company 13F	0.47%	$14,542,000 661,888 shares	—	30 Sep 2017
MORGAN STANLEY	13F Company 13F	0.46%	$14,296,000 650,711 shares	—	30 Sep 2017
TCW GROUP INC	13F Company 13F	0.45%	$13,991,000 636,796 shares	—	30 Sep 2017
DEUTSCHE BANK AG\	13F Company 13F	0.45%	$13,896,000 632,630 shares	—	30 Sep 2017
FEDERATED HERMES, INC.	13F Company 13F	0.43%	$13,480,000 613,604 shares	—	30 Sep 2017
BROADVIEW ADVISORS LLC	13F Company 13F	0.43%	$13,397,000 609,800 shares	—	30 Sep 2017
LAZARD ASSET MANAGEMENT LLC	13F Company 13F	0.43%	$13,393,000 609,615 shares	—	30 Sep 2017
PRINCIPAL FINANCIAL GROUP INC	13F Company 13F	0.42%	$13,208,000 601,155 shares	—	30 Sep 2017
HONEYWELL INTERNATIONAL INC	13F Company 13F	0.42%	$12,969,000 590,300 shares	—	30 Sep 2017

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2017

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

282

150,178,949

Rows loaded

282

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

Compare Q4 2017 vs Q3 2017 Across Filers

Q3 2017 holders

278

Q4 2017 holders

282

Holder diff

Investor	Q3 2017 Shares	Q4 2017 Shares	Share Diff	Share Chg %	Q3 2017 Value $	Q4 2017 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.