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 2018?

296 institutional investors reported CIEN - CIENA CORP - Common Stock for Q1 2018. Use the holders table for investor-level position and value details.

CIENA CORP - Common Stock (CIEN)

CUSIP: 171779309

Q1 2018 13F Holders as of 31 Mar 2018

Type / Class: Equity / Common Stock
Shares outstanding: 141,483,681
Total 13F shares: 149,043,718
Share change: -1,261,413
Total reported value: $3,859,435,666
Put/Call ratio: 95%
Price per share: $25.90
Number of holders: 296
Value change: -$8,041,511
Number of buys: 152
Number of sells: 137

Security key

171779309

Report period

Q1 2018

Institutions

296

Top holders

CIEN full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2018 Previous quarter: Q4 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: Q2 2018 Previous quarter: Q4 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 comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Lead holder

BlackRock Finance, Inc.

13D/G signal

—

Evidence rows

Latest as of

31 Dec 2017

13F Lead comparable stake: 11% Showing first 8 of 50 holder rows. Open remaining rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock Finance, Inc.	13F Company 13F	11%	$317,037,000 15,147,611 shares	—	31 Dec 2017
Bank of New York Mellon Corp	13F Company 13F	9%	$267,187,000 12,765,666 shares	—	31 Dec 2017
VANGUARD GROUP INC	13F Company 13F	8.6%	$254,801,000 12,173,982 shares	—	31 Dec 2017
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	4.7%	$139,527,000 6,666,428 shares	—	31 Dec 2017
Neuberger Berman Group LLC	13F Company 13F	3.5%	$103,527,000 4,945,555 shares	—	31 Dec 2017
STATE STREET CORP	13F Company 13F	3.4%	$100,980,000 4,824,523 shares	—	31 Dec 2017
Invesco Ltd.	13F Company 13F	3.4%	$100,429,000 4,798,351 shares	—	31 Dec 2017
SCHRODER INVESTMENT MANAGEMENT GROUP	13F Company 13F	2.6%	$76,213,000 3,641,332 shares	—	31 Dec 2017

Show 42 additional holder rows in the full holder list

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
FIL Ltd	13F Company 13F	2.5%	$74,694,000 3,568,739 shares	—	31 Dec 2017
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	2.4%	$70,713,000 3,378,379 shares	—	31 Dec 2017
TEACHERS ADVISORS, LLC	13F Company 13F	2.1%	$62,347,000 2,978,852 shares	—	31 Dec 2017
TIAA CREF INVESTMENT MANAGEMENT LLC	13F Company 13F	1.8%	$53,938,000 2,577,052 shares	—	31 Dec 2017
ALLIANCEBERNSTEIN L.P.	13F Company 13F	1.8%	$52,885,000 2,526,760 shares	—	31 Dec 2017
MILLENNIUM MANAGEMENT LLC	13F Company 13F	1.8%	$51,864,000 2,477,957 shares	—	31 Dec 2017
GOLDMAN SACHS GROUP INC	13F Company 13F	1.7%	$51,176,000 2,445,125 shares	—	31 Dec 2017
MAVERICK CAPITAL LTD	13F Company 13F	1.7%	$50,962,000 2,434,864 shares	—	31 Dec 2017
NORTHERN TRUST CORP	13F Company 13F	1.5%	$45,650,000 2,181,029 shares	—	31 Dec 2017
WESTFIELD CAPITAL MANAGEMENT CO LP	13F Company 13F	1.4%	$41,133,000 1,965,285 shares	—	31 Dec 2017
RENAISSANCE TECHNOLOGIES LLC	13F Company 13F	1.4%	$40,110,000 1,916,374 shares	—	31 Dec 2017
FMR LLC	13F Company 13F	1.2%	$36,350,000 1,736,750 shares	—	31 Dec 2017
Alyeska Investment Group, L.P.	13F Company 13F	1.2%	$34,522,000 1,649,403 shares	—	31 Dec 2017
Carlson Capital, L.P.	13F Company 13F	1.2%	$34,484,000 1,647,568 shares	—	31 Dec 2017
THRIVENT FINANCIAL FOR LUTHERANS	13F Company 13F	1.2%	$34,214,000 1,634,688 shares	—	31 Dec 2017
Rubric Capital Management LP	13F Company 13F	1.1%	$33,920,000 1,620,653 shares	—	31 Dec 2017
DEUTSCHE BANK AG\	13F Company 13F	1.1%	$33,778,000 1,614,006 shares	—	31 Dec 2017
Holocene Advisors, LP	13F Company 13F	1.1%	$33,531,000 1,602,040 shares	—	31 Dec 2017
Boston Partners	13F Company 13F	1%	$31,035,000 1,482,814 shares	—	31 Dec 2017
BECKER CAPITAL MANAGEMENT INC	13F Company 13F	0.99%	$29,276,000 1,398,750 shares	—	31 Dec 2017
NORGES BANK	13F Company 13F	0.94%	$27,811,000 1,328,801 shares	—	31 Dec 2017
PEREGRINE CAPITAL MANAGEMENT LLC	13F Company 13F	0.92%	$27,330,000 1,305,791 shares	—	31 Dec 2017
JPMORGAN CHASE & CO	13F Company 13F	0.87%	$25,881,000 1,236,503 shares	—	31 Dec 2017
Point72 Asset Management, L.P.	13F Company 13F	0.87%	$25,771,000 1,231,291 shares	—	31 Dec 2017
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.85%	$25,031,000 1,195,954 shares	—	31 Dec 2017
ROTHSCHILD & CO ASSET MANAGEMENT US INC.	13F Company 13F	0.81%	$23,906,000 1,142,191 shares	—	31 Dec 2017
ROYCE & ASSOCIATES LP	13F Company 13F	0.76%	$22,508,000 1,075,417 shares	—	31 Dec 2017
CITADEL ADVISORS LLC	13F Company 13F	0.72%	$21,438,000 1,024,270 shares	—	31 Dec 2017
State of New Jersey Common Pension Fund D	13F Company 13F	0.72%	$21,349,000 1,020,000 shares	—	31 Dec 2017
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	0.68%	$20,036,000 957,269 shares	—	31 Dec 2017
HONEYWELL INTERNATIONAL INC	13F Company 13F	0.67%	$19,884,000 950,000 shares	—	31 Dec 2017
BANK OF AMERICA CORP /DE/	13F Company 13F	0.66%	$19,567,000 934,885 shares	—	31 Dec 2017
BALYASNY ASSET MANAGEMENT L.P.	13F Company 13F	0.63%	$18,652,000 891,162 shares	—	31 Dec 2017
JACOBS LEVY EQUITY MANAGEMENT, INC	13F Company 13F	0.55%	$16,279,000 777,765 shares	—	31 Dec 2017
MORGAN STANLEY	13F Company 13F	0.55%	$16,225,000 775,235 shares	—	31 Dec 2017
BNP Paribas Asset Management Holding S.A.	13F Company 13F	0.52%	$15,459,000 738,599 shares	—	31 Dec 2017
AMERIPRISE FINANCIAL INC	13F Company 13F	0.51%	$15,200,000 726,216 shares	—	31 Dec 2017
Gotham Asset Management, LLC	13F Company 13F	0.51%	$15,062,000 719,652 shares	—	31 Dec 2017
BROADVIEW ADVISORS LLC	13F Company 13F	0.49%	$14,451,000 690,450 shares	—	31 Dec 2017
Retirement Systems of Alabama	13F Company 13F	0.48%	$14,337,000 684,984 shares	—	31 Dec 2017
LAZARD ASSET MANAGEMENT LLC	13F Company 13F	0.47%	$13,988,000 668,366 shares	—	31 Dec 2017
EMERALD ADVISERS, LLC	13F Company 13F	0.45%	$13,455,000 642,874 shares	—	31 Dec 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 Q1 2018

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

Institutions

296

149,043,718

Rows loaded

296

Investor	Option	Weight %	Change %	Reported value	* Price	Shares	Share Change	Activity	Report Period

* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. An asterisk next to the price means the price is likely invalid.

Compare Q1 2018 vs Q4 2017 Across Filers

Q4 2017 holders

282

Q1 2018 holders

296

Holder diff

Investor	Q4 2017 Shares	Q1 2018 Shares	Share Diff	Share Chg %	Q4 2017 value	Q1 2018 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend