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CIEN

Ciena Corp
$460.72 -1.62 (-0.35%) At close · Jul 10
Market Cap
$65.22B
Shares
141,552,922

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 1,094
Total Value: $50,799,530,281
Total Shares: 130,753,199
Showing 1–100 of 1,135 holdings by value · page 1 of 12

Institutional Ownership Trend

26 quarters

Superinvestors Holding CIEN

All superinvestors →
Stephen Mandel $314,280,726 Ray Dalio $55,845,332 Joel Greenblatt $47,093,851

Holder Concentration

Across 1,086 13F filers
Top Holder
16.2%
Jun 2023 → Mar 2026 · range 11.9% – 16.2%
of institutional value
Top 5
46.1%
Jun 2023 → Mar 2026 · range 35.1% – 49.0%
of institutional value
Top 10
58.1%
Jun 2023 → Mar 2026 · range 45.9% – 59.6%
of institutional value
HHI
554
Jun 2023 → Mar 2026 · range 387 – 567
Broadly held
Showing 100 of 1,135
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega FMR LLC $8,234,263,570 16.21% 21,209,756
Mega BlackRock, Inc. $5,192,105,315 10.22% 13,373,787
Mega JPMORGAN CHASE & CO $3,970,291,931 7.82% 10,226,649
Mega VANGUARD CAPITAL MANAGEMENT LLC $3,559,818,691 7.01% 9,169,355
Mega STATE STREET CORP $2,449,362,481 4.82% 6,309,050
Mega PRICE T ROWE ASSOCIATES INC /MD/ $2,035,413,019 4.01% 5,242,802
Mega GEODE CAPITAL MANAGEMENT, LLC $1,578,371,970 3.11% 4,065,559
Mega Capital Research Global Investors $1,067,651,911 2.10% 2,750,050
Mega BANK OF AMERICA CORP /DE/ Bank $758,846,779 1.49% 1,954,632
Mega Capital World Investors $669,621,821 1.32% 1,724,807
Mid Jericho Capital Asset Management L.P. $642,975,655 1.27% 1,656,172
Mega MORGAN STANLEY $606,242,103 1.19% 1,561,554
Mega Invesco Ltd. $594,105,642 1.17% 1,530,293
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $539,048,425 1.06% 1,388,477
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $493,928,723 0.97% 1,272,258
Large VOYA INVESTMENT MANAGEMENT LLC $467,855,584 0.92% 1,205,099
Mega NORTHERN TRUST CORP Bank $460,941,978 0.91% 1,187,291
Mega DIMENSIONAL FUND ADVISORS LP $444,919,341 0.88% 1,146,020
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $396,610,330 0.78% 1,021,586
Mega AQR CAPITAL MANAGEMENT LLC $379,337,200 0.75% 977,094
Mega Bank of New York Mellon Corp Bank $359,834,072 0.71% 926,858
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $330,745,554 0.65% 851,932
Mega Nuveen, LLC $327,741,046 0.65% 844,193
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $325,453,209 0.64% 838,300
Large LONE PINE CAPITAL LLC $314,280,726 0.62% 809,522
Large Polar Capital Holdings Plc $309,960,890 0.61% 798,395
Mega VANGUARD FIDUCIARY TRUST CO Bank $308,020,905 0.61% 793,398
Mega GOLDMAN SACHS GROUP INC $300,201,952 0.59% 773,258
Mid Atreides Management, LP $262,756,781 0.52% 676,807
Mega Legal & General Group Plc $251,721,731 0.50% 648,383
Mega UBS Group AG $251,654,178 0.50% 648,209
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $226,209,194 0.45% 582,668
Mega JANE STREET GROUP, LLC $222,649,905 0.44% 573,500
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $213,410,031 0.42% 549,700
Large Point72 Asset Management, L.P. $211,451,410 0.42% 544,655
Mega AMERICAN CENTURY COMPANIES INC $208,029,939 0.41% 535,842
Mega DEUTSCHE BANK AG\ Bank $204,941,956 0.40% 527,888
Mega ALLIANCEBERNSTEIN L.P. $204,756,772 0.40% 527,411
Mega PRIMECAP MANAGEMENT CO/CA/ $170,064,151 0.33% 438,050
Mega FIRST TRUST ADVISORS LP $169,635,157 0.33% 436,945
Mega CITADEL ADVISORS LLC $169,384,749 0.33% 436,300
Mega Amundi $167,417,198 0.33% 431,232
Mega BNP PARIBAS ARBITRAGE, SA $164,525,273 0.32% 423,783
Mega T. Rowe Price Investment Management, Inc. $162,458,337 0.32% 418,459
Mega Swiss National Bank Bank $160,467,882 0.32% 413,332
Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC $154,740,325 0.30% 398,579
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $152,998,336 0.30% 394,092
Mega JANE STREET GROUP, LLC $144,732,144 0.28% 372,800
Mega WELLS FARGO & COMPANY/MN $136,829,719 0.27% 352,445
Large ACADIAN ASSET MANAGEMENT LLC $128,162,875 0.25% 330,121
Large PRUDENTIAL FINANCIAL INC $126,470,969 0.25% 325,763
Large Balyasny Asset Management L.P. $125,560,958 0.25% 323,419
Mega Sumitomo Mitsui Trust Group, Inc. $124,942,119 0.25% 321,825
Mega Mitsubishi UFJ Asset Management Co., Ltd. $123,122,097 0.24% 317,137
Small Anatole Investment Management Ltd $121,688,752 0.24% 313,445
Mega Vanguard Global Advisers, LLC $120,502,321 0.24% 310,389
Mega RAYMOND JAMES FINANCIAL INC $118,324,348 0.23% 304,779
Large BARROW HANLEY MEWHINNEY & STRAUSS LLC $117,072,308 0.23% 301,554
Mega National Pension Service Pension $115,903,348 0.23% 298,543
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $112,634,452 0.22% 290,123
Mega NEUBERGER BERMAN GROUP LLC $112,467,125 0.22% 289,692
Large Allianz Asset Management GmbH $112,348,325 0.22% 289,386
Large 1832 Asset Management L.P. $111,577,302 0.22% 287,400
Large Assenagon Asset Management S.A. $104,980,821 0.21% 214,002
Large Robeco Institutional Asset Management B.V. $104,023,510 0.20% 267,943
Mega BARCLAYS PLC $103,091,757 0.20% 265,543
Mega ROYAL BANK OF CANADA Bank $102,314,908 0.20% 263,542
Mega CITADEL ADVISORS LLC $101,095,092 0.20% 260,400
Mid Foundations Investment Advisors, LLC Endowment $99,580,215 0.20% 256,498
Mega JANUS HENDERSON GROUP PLC $96,748,468 0.19% 249,204
Mid Analog Century Management LP $96,052,760 0.19% 247,412
Mega RHUMBLINE ADVISERS $95,624,154 0.19% 246,308
Mega VANGUARD ASSET MANAGEMENT, Ltd $94,860,118 0.19% 244,340
Mega California Public Employees Retirement System Pension $92,359,917 0.18% 237,900
Mid Whale Rock Capital Management LLC $89,784,787 0.18% 231,267
Mega HSBC HOLDINGS PLC $86,654,097 0.17% 223,203
Mid Munro Partners $83,459,744 0.16% 214,975
Mid Williams Jones Wealth Management, LLC. $83,350,263 0.16% 214,693
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $81,407,560 0.16% 209,689
Mega CITIGROUP INC $77,667,739 0.15% 200,056
Small Amanah Holdings Trust $77,646,000 0.15% 200,000
Mega ENVESTNET ASSET MANAGEMENT INC $74,229,964 0.15% 191,201
Large SG Americas Securities, LLC Broker-Dealer $74,132,130 0.15% 190,949
Mega AMERIPRISE FINANCIAL INC $72,566,008 0.14% 186,915
Large Russell Investments Group, Ltd. $69,295,552 0.14% 178,491
Mid Senvest Management, LLC $67,135,060 0.13% 172,926
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $66,887,758 0.13% 172,289
Mega TD Asset Management Inc $65,966,488 0.13% 169,916
Mid Stephens Investment Management Group LLC $64,512,567 0.13% 166,171
Large Zurich Insurance Group Ltd/FI Insurance $64,128,219 0.13% 165,181
Small North Growth Management Ltd. $60,952,110 0.12% 157,000
Mega PRINCIPAL FINANCIAL GROUP INC $60,921,827 0.12% 156,922
Mega LPL Financial LLC $60,561,162 0.12% 155,993
Large SEI INVESTMENTS CO $56,205,220 0.11% 144,773
Mega WELLINGTON MANAGEMENT GROUP LLP $56,051,482 0.11% 144,377
Large Bridgewater Associates, LP $55,845,332 0.11% 143,846
Large Tidal Investments LLC $55,185,341 0.11% 142,146
Mid BECKER CAPITAL MANAGEMENT INC $55,000,155 0.11% 141,669
Mega CITADEL ADVISORS LLC $54,521,079 0.11% 140,435
Large ROYAL LONDON ASSET MANAGEMENT LTD $52,344,662 0.10% 134,829
Key facts CIK 936395 CUSIP 171779309 13F (30d) 53 filings 50 filers Visit website Investor relations

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