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 Q3 2017?

278 institutional investors reported CIEN - CIENA CORP - Common Stock for Q3 2017. Use the holders table for investor-level position and value details.

CIENA CORP - Common Stock (CIEN)

CUSIP: 171779309

Q3 2017 13F Holders as of 30 Sep 2017

Type / Class: Equity / Common Stock
Shares outstanding: 141,483,681
Total 13F shares: 153,364,478
Share change: +5,871,540
Total reported value: $3,369,469,810
Put/Call ratio: 71%
Price per share: $21.97
Number of holders: 278
Value change: +$107,225,635
Number of buys: 139
Number of sells: 146

Security key

171779309

Report period

Q3 2017

Institutions

278

Top holders

CIEN full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2017 Previous quarter: Q2 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: Q4 2017 Previous quarter: Q2 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

30 Jun 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%	$383,470,000 15,326,476 shares	—	30 Jun 2017
VANGUARD GROUP INC	13F Company 13F	8.8%	$311,906,000 12,466,282 shares	—	30 Jun 2017
Bank of New York Mellon Corp	13F Company 13F	8.3%	$292,826,000 11,703,680 shares	—	30 Jun 2017
Invesco Ltd.	13F Company 13F	4.7%	$168,120,000 6,719,403 shares	—	30 Jun 2017
TIAA CREF INVESTMENT MANAGEMENT LLC	13F Company 13F	4.7%	$166,378,000 6,649,794 shares	—	30 Jun 2017
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	4.6%	$164,109,000 6,559,137 shares	—	30 Jun 2017
TEACHERS ADVISORS, LLC	13F Company 13F	3.3%	$116,531,000 4,657,520 shares	—	30 Jun 2017
STATE STREET CORP	13F Company 13F	3.3%	$116,319,000 4,648,540 shares	—	30 Jun 2017

Show 42 additional holder rows in the full holder list

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	2%	$70,588,000 2,821,175 shares	—	30 Jun 2017
SCHRODER INVESTMENT MANAGEMENT GROUP	13F Company 13F	2%	$70,678,000 2,781,510 shares	—	30 Jun 2017
Carlson Capital, L.P.	13F Company 13F	1.9%	$67,799,000 2,709,800 shares	—	30 Jun 2017
PARNASSUS INVESTMENTS, LLC	13F Company 13F	1.9%	$67,554,000 2,700,000 shares	—	30 Jun 2017
VICTORY CAPITAL MANAGEMENT INC	13F Company 13F	1.9%	$65,796,000 2,629,725 shares	—	30 Jun 2017
VOYA INVESTMENT MANAGEMENT LLC	13F Company 13F	1.9%	$65,779,000 2,629,074 shares	—	30 Jun 2017
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	1.8%	$63,964,000 2,556,511 shares	—	30 Jun 2017
NORTHERN TRUST CORP	13F Company 13F	1.6%	$57,962,000 2,316,614 shares	—	30 Jun 2017
WESTFIELD CAPITAL MANAGEMENT CO LP	13F Company 13F	1.5%	$53,420,000 2,135,095 shares	—	30 Jun 2017
Roystone Capital Management LP	13F Company 13F	1.4%	$48,571,000 1,941,300 shares	—	30 Jun 2017
THRIVENT FINANCIAL FOR LUTHERANS	13F Company 13F	1.3%	$47,034,000 1,879,844 shares	—	30 Jun 2017
Neuberger Berman Group LLC	13F Company 13F	1.1%	$39,148,000 1,564,664 shares	—	30 Jun 2017
FMR LLC	13F Company 13F	1%	$35,969,000 1,437,640 shares	—	30 Jun 2017
NORGES BANK	13F Company 13F	0.97%	$34,509,000 1,379,265 shares	—	30 Jun 2017
MAPLELANE CAPITAL, LLC	13F Company 13F	0.86%	$30,384,000 1,214,397 shares	—	30 Jun 2017
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.85%	$30,164,000 1,205,596 shares	—	30 Jun 2017
PEREGRINE CAPITAL MANAGEMENT LLC	13F Company 13F	0.81%	$28,512,000 1,139,572 shares	—	30 Jun 2017
Artemis Investment Management LLP	13F Company 13F	0.8%	$28,400,000 1,135,329 shares	—	30 Jun 2017
GOLDMAN SACHS GROUP INC	13F Company 13F	0.8%	$28,148,000 1,125,033 shares	—	30 Jun 2017
ROTHSCHILD & CO ASSET MANAGEMENT US INC.	13F Company 13F	0.78%	$27,779,000 1,110,269 shares	—	30 Jun 2017
EMERALD ADVISERS, LLC	13F Company 13F	0.78%	$27,717,000 1,107,807 shares	—	30 Jun 2017
Shellback Capital, LP	13F Company 13F	0.67%	$23,839,000 952,804 shares	—	30 Jun 2017
FIL Ltd	13F Company 13F	0.65%	$23,010,000 919,647 shares	—	30 Jun 2017
MORGAN STANLEY	13F Company 13F	0.65%	$22,998,000 919,130 shares	—	30 Jun 2017
JPMORGAN CHASE & CO	13F Company 13F	0.64%	$22,703,000 907,390 shares	—	30 Jun 2017
EMERALD MUTUAL FUND ADVISERS TRUST	13F Company 13F	0.64%	$22,496,000 899,135 shares	—	30 Jun 2017
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	0.6%	$21,193,000 847,006 shares	—	30 Jun 2017
ROYCE & ASSOCIATES LP	13F Company 13F	0.6%	$21,140,000 844,917 shares	—	30 Jun 2017
BANK OF AMERICA CORP /DE/	13F Company 13F	0.58%	$20,705,000 827,532 shares	—	30 Jun 2017
Zweig-DiMenna Associates LLC	13F Company 13F	0.54%	$19,198,000 767,296 shares	—	30 Jun 2017
Retirement Systems of Alabama	13F Company 13F	0.53%	$18,846,000 753,243 shares	—	30 Jun 2017
Polar Asset Management Partners Inc.	13F Company 13F	0.51%	$18,017,000 720,100 shares	—	30 Jun 2017
RENAISSANCE TECHNOLOGIES LLC	13F Company 13F	0.49%	$17,226,000 688,474 shares	—	30 Jun 2017
ALLIANCEBERNSTEIN L.P.	13F Company 13F	0.47%	$16,474,000 658,416 shares	—	30 Jun 2017
AMERICAN CENTURY COMPANIES INC	13F Company 13F	0.45%	$15,900,000 635,473 shares	—	30 Jun 2017
TCW GROUP INC	13F Company 13F	0.44%	$15,691,000 627,129 shares	—	30 Jun 2017
State of New Jersey Common Pension Fund D	13F Company 13F	0.44%	$15,638,000 625,000 shares	—	30 Jun 2017
BROADVIEW ADVISORS LLC	13F Company 13F	0.43%	$15,372,000 614,375 shares	—	30 Jun 2017
PRINCIPAL FINANCIAL GROUP INC	13F Company 13F	0.43%	$15,209,000 607,864 shares	—	30 Jun 2017
QUENTEC ASSET MANAGEMENT LLC	13F Company 13F	0.41%	$14,512,000 580,000 shares	—	30 Jun 2017
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F Company 13F	0.39%	$13,867,385 554,252 shares	—	30 Jun 2017
AMERIPRISE FINANCIAL INC	13F Company 13F	0.38%	$13,363,000 534,092 shares	—	30 Jun 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 Q3 2017

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

Institutions

278

153,364,478

Rows loaded

278

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 Q3 2017 vs Q2 2017 Across Filers

Q2 2017 holders

309

Q3 2017 holders

278

Holder diff

-31

Investor	Q2 2017 Shares	Q3 2017 Shares	Share Diff	Share Chg %	Q2 2017 value	Q3 2017 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend