Equibles

CIEN

Ciena Corp

Company with tickers: CIEN

CIK
936395
CUSIP
171779309
Shares Outstanding
141,398,427
13F Activity (30d)
847 filings 828 filers
Holders: 1,077
Total Value: $53,615,922,984
Total Shares: 138,103,505
Showing 1–100 of 1,117 holdings by value · page 1 of 12

Institutional Ownership Trend

24 quarters

Holder Concentration

Across 1,077 13F filers · Δ vs Dec 31, 2025
Top Holder
15.4%
Jun 2023 → Mar 2026 · range 13.8% – 99.3%
+1.5 pts
Top 5
44.4%
Jun 2023 → Mar 2026 · range 44.4% – 100.0%
−4.6 pts
Top 10
59.1%
Jun 2023 → Mar 2026 · range 59.1% – 100.0%
−0.5 pts
HHI
526
Jun 2023 → Mar 2026 · range 526 – 9,867
Broadly held −27

Quarterly Activity

vs Dec 31, 2025
New
321
Increased
311
Decreased
364
Sold Out
98
Unchanged
81
Holder count: +223
Institutional value: +50.1%
Shares held: -9.6%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds
Mega GEODE CAPITAL MANAGEMENT, LLC +1,378,122 4,065,559
Mega STATE STREET CORP +1,206,641 6,309,050
Mega PRICE T ROWE ASSOCIATES INC /MD/ +1,191,177 5,242,802
Mega JANE STREET GROUP, LLC +445,872 1,011,081
Mega T. Rowe Price Investment Management, Inc. +418,395 418,459

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds
Small Elyxium Wealth, LLC −11,691,454 57,852
Mega BlackRock, Inc. −3,295,043 13,373,787
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. −951,564 1,021,586
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP −848,358 1,388,477
Mid Atreides Management, LP −751,423 676,807

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD)
Mega VANGUARD CAPITAL MANAGEMENT LLC 9,169,355 $3,559,818,691
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 7,369,124 $2,860,915,010
Mega Capital Research Global Investors 2,750,050 $1,067,651,911
Large LONE PINE CAPITAL LLC 809,522 $314,280,726
Mega VANGUARD FIDUCIARY TRUST CO 793,398 $308,020,905

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD)
Mega VANGUARD GROUP INC 14,376,579 $3,362,250,527
Mega NORGES BANK 811,950 $189,890,746
Mid Hood River Capital Management LLC 453,779 $106,125,294
Mid WT Asset Management Ltd 133,700 $31,268,419
Large Qube Research & Technologies Ltd 132,396 $30,963,452
Filter: New 321 Increased 311 Reduced 364 Sold out 98 Unchanged 81
100 of 100 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Action
Mega FMR LLC $8,234,263,570 15.36% 21,209,756 View
Mega BlackRock, Inc. $5,192,105,315 9.68% 13,373,787 View
Mega JPMORGAN CHASE & CO $3,970,291,931 7.41% 10,226,649 View
Mega VANGUARD CAPITAL MANAGEMENT LLC $3,559,818,691 6.64% 9,169,355 View
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $2,860,915,010 5.34% 7,369,124 View
Mega STATE STREET CORP $2,449,362,481 4.57% 6,309,050 View
Mega PRICE T ROWE ASSOCIATES INC /MD/ $2,035,413,019 3.80% 5,242,802 View
Mega GEODE CAPITAL MANAGEMENT, LLC $1,578,371,970 2.94% 4,065,559 View
Mega Capital Research Global Investors $1,067,651,911 1.99% 2,750,050 View
Mega BANK OF AMERICA CORP /DE/ Bank $758,846,779 1.42% 1,954,632 View
Mega Capital World Investors $669,621,821 1.25% 1,724,807 View
Mid Jericho Capital Asset Management L.P. $642,975,655 1.20% 1,656,172 View
Mega MORGAN STANLEY $606,242,103 1.13% 1,561,554 View
Mega Invesco Ltd. $594,105,642 1.11% 1,530,293 View
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $539,048,425 1.01% 1,388,477 View
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $493,928,723 0.92% 1,272,258 View
Large VOYA INVESTMENT MANAGEMENT LLC $467,855,584 0.87% 1,205,099 View
Mega NORTHERN TRUST CORP Bank $460,941,978 0.86% 1,187,291 View
Mega DIMENSIONAL FUND ADVISORS LP $444,919,341 0.83% 1,146,020 View
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $396,610,330 0.74% 1,021,586 View
Mega AQR CAPITAL MANAGEMENT LLC $379,337,200 0.71% 977,094 View
Mega Bank of New York Mellon Corp Bank $359,834,072 0.67% 926,858 View
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $330,745,554 0.62% 851,932 View
Mega Nuveen, LLC $327,741,046 0.61% 844,193 View
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $325,453,209 0.61% 838,300 View
Large LONE PINE CAPITAL LLC $314,280,726 0.59% 809,522 View
Large Polar Capital Holdings Plc $309,960,890 0.58% 798,395 View
Mega VANGUARD FIDUCIARY TRUST CO Bank $308,020,905 0.57% 793,398 View
Mega GOLDMAN SACHS GROUP INC $300,201,952 0.56% 773,258 View
Mid Atreides Management, LP $262,756,781 0.49% 676,807 View
Mega Legal & General Group Plc $251,721,731 0.47% 648,383 View
Mega UBS Group AG $251,654,178 0.47% 648,209 View
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $226,209,194 0.42% 582,668 View
Mega JANE STREET GROUP, LLC $222,649,905 0.42% 573,500 View
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $213,410,031 0.40% 549,700 View
Large Point72 Asset Management, L.P. $211,451,410 0.39% 544,655 View
Mega AMERICAN CENTURY COMPANIES INC $208,029,939 0.39% 535,842 View
Mega DEUTSCHE BANK AG\ Bank $204,941,956 0.38% 527,888 View
Mega ALLIANCEBERNSTEIN L.P. $204,756,772 0.38% 527,411 View
Mega PRIMECAP MANAGEMENT CO/CA/ $170,064,151 0.32% 438,050 View
Mega FIRST TRUST ADVISORS LP $169,635,157 0.32% 436,945 View
Mega CITADEL ADVISORS LLC $169,384,749 0.32% 436,300 View
Mega Amundi $167,417,198 0.31% 431,232 View
Mega BNP PARIBAS ARBITRAGE, SA $164,525,273 0.31% 423,783 View
Mega T. Rowe Price Investment Management, Inc. $162,458,337 0.30% 418,459 View
Mega Swiss National Bank Bank $160,467,882 0.30% 413,332 View
Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC $154,740,325 0.29% 398,579 View
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $152,998,336 0.29% 394,092 View
Mega JANE STREET GROUP, LLC $144,732,144 0.27% 372,800 View
Large Assenagon Asset Management S.A. $141,528,081 0.26% 364,547 View
Mega WELLS FARGO & COMPANY/MN $136,829,719 0.26% 352,445 View
Large ACADIAN ASSET MANAGEMENT LLC $128,162,875 0.24% 330,121 View
Large PRUDENTIAL FINANCIAL INC $126,470,969 0.24% 325,763 View
Large Balyasny Asset Management L.P. $125,560,958 0.23% 323,419 View
Mega Sumitomo Mitsui Trust Group, Inc. $124,942,119 0.23% 321,825 View
Mega Mitsubishi UFJ Asset Management Co., Ltd. $123,122,097 0.23% 317,137 View
Small Anatole Investment Management Ltd $121,688,752 0.23% 313,445 View
Mega Vanguard Global Advisers, LLC $120,502,321 0.22% 310,389 View
Mega RAYMOND JAMES FINANCIAL INC $118,324,348 0.22% 304,779 View
Large BARROW HANLEY MEWHINNEY & STRAUSS LLC $117,072,308 0.22% 301,554 View
Mega National Pension Service Pension $115,903,348 0.22% 298,543 View
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $112,634,452 0.21% 290,123 View
Mega NEUBERGER BERMAN GROUP LLC $112,467,125 0.21% 289,692 View
Large Allianz Asset Management GmbH $112,348,325 0.21% 289,386 View
Large 1832 Asset Management L.P. $111,577,302 0.21% 287,400 View
Large Robeco Institutional Asset Management B.V. $104,023,510 0.19% 267,943 View
Mega BARCLAYS PLC $103,091,757 0.19% 265,543 View
Mega ROYAL BANK OF CANADA Bank $102,314,908 0.19% 263,542 View
Mega CITADEL ADVISORS LLC $101,095,092 0.19% 260,400 View
Mid Foundations Investment Advisors, LLC Endowment $99,580,215 0.19% 256,498 View
Mega JANUS HENDERSON GROUP PLC $96,748,468 0.18% 249,204 View
Mid Analog Century Management LP $96,052,760 0.18% 247,412 View
Mega RHUMBLINE ADVISERS $95,624,154 0.18% 246,308 View
Mega VANGUARD ASSET MANAGEMENT, Ltd $94,860,118 0.18% 244,340 View
Mega California Public Employees Retirement System Pension $92,359,917 0.17% 237,900 View
Mid Whale Rock Capital Management LLC $89,784,787 0.17% 231,267 View
Mega HSBC HOLDINGS PLC $86,654,097 0.16% 223,203 View
Mid Munro Partners $83,459,744 0.16% 214,975 View
Mid Williams Jones Wealth Management, LLC. $83,350,263 0.16% 214,693 View
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $81,407,560 0.15% 209,689 View
Mega CITIGROUP INC $77,667,739 0.14% 200,056 View
Small Amanah Holdings Trust $77,646,000 0.14% 200,000 View
Mega ENVESTNET ASSET MANAGEMENT INC $74,229,964 0.14% 191,201 View
Large SG Americas Securities, LLC Broker-Dealer $74,132,130 0.14% 190,949 View
Mega AMERIPRISE FINANCIAL INC $72,566,008 0.14% 186,915 View
Large Russell Investments Group, Ltd. $69,295,552 0.13% 178,491 View
Mid Senvest Management, LLC $67,135,060 0.13% 172,926 View
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $66,887,758 0.12% 172,289 View
Mega TD Asset Management Inc $65,966,488 0.12% 169,916 View
Mid Stephens Investment Management Group LLC $64,512,567 0.12% 166,171 View
Large Zurich Insurance Group Ltd/FI Insurance $64,128,219 0.12% 165,181 View
Small North Growth Management Ltd. $60,952,110 0.11% 157,000 View
Mega PRINCIPAL FINANCIAL GROUP INC $60,921,827 0.11% 156,922 View
Mega LPL Financial LLC $60,561,162 0.11% 155,993 View
Large SEI INVESTMENTS CO $56,205,220 0.10% 144,773 View
Mega WELLINGTON MANAGEMENT GROUP LLP $56,051,482 0.10% 144,377 View
Large Bridgewater Associates, LP $55,845,332 0.10% 143,846 View
Large Tidal Investments LLC $55,185,341 0.10% 142,146 View
Mid BECKER CAPITAL MANAGEMENT INC $55,000,155 0.10% 141,669 View
Mega CITADEL ADVISORS LLC $54,521,079 0.10% 140,435 View
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