There is a long list of 445 institutional holders of CIEN within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of CIEN by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-CIEN table below, the initial column indicates the name of each top institutional holder of CIEN, with a link to that fund's top holdings. The next columns indicate the amount of CIEN stock held by each of the institutional holders of CIEN, followed by the CIEN position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
BlackRock Inc.	16,296,193	$733,492	12/31/2023
CIEN	16,296,193	$733,492	12/31/2023
Vanguard Group Inc.	15,026,071	$676,323	12/31/2023
CIEN	15,026,071	$676,323	12/31/2023
FMR LLC	11,317,655	$509,408	12/31/2023
CIEN	11,317,655	$509,408	12/31/2023
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	5,021,719	$226,028	12/31/2023
CIEN	5,021,719	$226,028	12/31/2023
State Street Corp	4,344,354	$195,539	12/31/2023
CIEN	4,344,354	$195,539	12/31/2023
Capital World Investors	3,513,633	$158,149	12/31/2023
CIEN	3,513,633	$158,149	12/31/2023
Senvest Management LLC	2,952,264	$132,881	12/31/2023
CIEN	2,952,264	$132,881	12/31/2023
Thrivent Financial for Lutherans	2,770,589	$124,704	12/31/2023
CIEN	2,770,589	$124,704	12/31/2023
FIL Ltd	2,662,001	$119,817	12/31/2023
CIEN	2,662,001	$119,817	12/31/2023
Atreides Management LP	2,550,380	$114,793	12/31/2023
CIEN	2,550,380	$114,793	12/31/2023
Geode Capital Management LLC	2,293,467	$103,246	12/31/2023
CIEN	2,293,467	$103,246	12/31/2023
Diamond Hill Capital Management Inc.	2,287,361	$102,954	12/31/2023
CIEN	2,287,361	$102,954	12/31/2023
Ion Asset Management Ltd.	2,163,580	$97,383	12/31/2023
CIEN	2,163,580	$97,383	12/31/2023
Dimensional Fund Advisors LP	2,162,410	$97,331	12/31/2023
CIEN	2,162,410	$97,331	12/31/2023
Victory Capital Management Inc.	2,138,691	$96,262	12/31/2023
CIEN	2,138,691	$96,262	12/31/2023
Neuberger Berman Group LLC	2,066,852	$93,037	12/31/2023
CIEN	2,066,852	$93,037	12/31/2023
Bank of America Corp DE	2,003,533	$90,179	12/31/2023
CIEN	2,003,533	$90,179	12/31/2023
Fort Pitt Capital Group LLC	1,652,510	$81,717	03/31/2024
CIEN	1,652,510	$81,717	03/31/2024
Amundi	1,623,462	$77,764	12/31/2023
CIEN	1,623,462	$77,764	12/31/2023
First Trust Advisors LP	1,714,937	$77,189	12/31/2023
CIEN	1,714,937	$77,189	12/31/2023
Norges Bank	1,632,436	$73,476	12/31/2023
CIEN	1,632,436	$73,476	12/31/2023
Schroder Investment Management Group	1,503,512	$67,673	12/31/2023
CIEN	1,503,512	$67,673	12/31/2023
Bank of New York Mellon Corp	1,394,569	$62,770	12/31/2023
CIEN	1,394,569	$62,770	12/31/2023
Morgan Stanley	1,350,850	$60,802	12/31/2023
CIEN	1,350,850	$60,802	12/31/2023
Barrow Hanley Mewhinney & Strauss LLC	1,344,584	$60,520	12/31/2023
CIEN	1,344,584	$60,520	12/31/2023
Nuveen Asset Management LLC	1,228,470	$55,293	12/31/2023
CIEN	1,228,470	$55,293	12/31/2023
Woodline Partners LP	1,085,461	$48,857	12/31/2023
CIEN	1,085,461	$48,857	12/31/2023
Northern Trust Corp	1,071,087	$48,210	12/31/2023
CIEN	1,071,087	$48,210	12/31/2023
JPMorgan Chase & Co.	1,019,784	$45,900	12/31/2023
CIEN	1,019,784	$45,900	12/31/2023
Charles Schwab Investment Management Inc.	949,476	$42,736	12/31/2023
CIEN	949,476	$42,736	12/31/2023
Wealth Enhancement Advisory Services LLC	815,486	$40,326	03/31/2024
CIEN	815,486	$40,326	03/31/2024
Clal Insurance Enterprises Holdings Ltd	874,000	$39,339	12/31/2023
CIEN	874,000	$39,339	12/31/2023
AXA S.A.	844,814	$38,025	12/31/2023
CIEN	844,814	$38,025	12/31/2023
Rokos Capital Management LLP	696,980	$31,368	12/31/2023
CIEN	696,980	$31,368	12/31/2023
Lazard Asset Management LLC	672,635	$30,275	12/31/2023
CIEN	672,635	$30,275	12/31/2023
Loomis Sayles & Co. L P	646,627	$29,104	12/31/2023
CIEN	646,627	$29,104	12/31/2023
Giverny Capital Inc.	625,936	$28,173	12/31/2023
CIEN	625,936	$28,173	12/31/2023
Segall Bryant & Hamill LLC	619,681	$27,892	12/31/2023
CIEN	619,681	$27,892	12/31/2023
Squarepoint Ops LLC		$26,937	12/31/2023
CIEN	578,356	$26,032	12/31/2023
Call	20,100	$905	12/31/2023
Cramer Rosenthal Mcglynn LLC	582,799	$26,232	12/31/2023
CIEN	582,799	$26,232	12/31/2023
BNP Paribas Arbitrage SA	572,334	$25,762	12/31/2023
CIEN	572,334	$25,762	12/31/2023
Principal Financial Group Inc.	542,824	$24,433	12/31/2023
CIEN	542,824	$24,433	12/31/2023
Assenagon Asset Management S.A.	537,959	$24,214	12/31/2023
CIEN	537,959	$24,214	12/31/2023
North Growth Management Ltd.	532,000	$23,961	12/31/2023
CIEN	532,000	$23,961	12/31/2023
Deutsche Bank AG	511,413	$23,019	12/31/2023
CIEN	511,413	$23,019	12/31/2023
Colony Capital Inc.	506,588	$22,802	12/31/2023
CIEN	506,588	$22,802	12/31/2023
Becker Capital Management Inc.	469,318	$21,124	12/31/2023
CIEN	469,318	$21,124	12/31/2023
Retirement Systems of Alabama	460,727	$20,737	12/31/2023
CIEN	460,727	$20,737	12/31/2023
American Century Companies Inc.	447,821	$20,156	12/31/2023
CIEN	447,821	$20,156	12/31/2023
Rhumbline Advisers	432,215	$19,454	12/31/2023
CIEN	432,215	$19,454	12/31/2023

See All: Funds Holding CIEN
See Details: Top 10 Hedge Funds Holding CIEN
Also See: CIEN Insider Buying
Also See: CIEN Holdings Changes

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