Security Snapshot

CIENA CORP - Common Stock, par value $0.01 per share (CIEN) Institutional Ownership

CUSIP: 171779309

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026

13F reference period

Q2 2026

Institutions Reporting

1,220

Shares (Excl. Options)

132.06MFull value: 132,063,446 · shares · 30 Jun 2026

Price

$490.56

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.

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Security type / class
Equity / Common Stock, par value $0.01 per share
Symbol
CIEN on NYSE
All holders as of 30 Jun 2026
Q2 2026
Total 13F shares
132,063,446
Latest holder snapshot 5 signals
Total 13F value
$64,583,643,549
Portfolio coverage rank
0.03%
Share change
-1,901,062
Value change
-$598,139,172
Number of holders
1,220
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
144,009,692
SEC-reported price per share
$351.82
Insider filing price
$351.82
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • CIEN - CIENA CORP - Common Stock, par value $0.01 per share is tracked under CUSIP 171779309.
  • 1220 institutions reported positions in Q2 2026.
  • 5 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 1,082 to 1,220 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from
    $51.82BFull value: $51,824,840,494 · USD · 31 Mar 2026
    to
    $64.58BFull value: $64,583,643,549 · USD · 30 Jun 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 1220 institutions filings for Q2 2026.

Open SEC evidence

Security key

171779309

13F reference period

Q2 2026

13F holders

1,220

13D/G owners

5

CIK / CUSIP context first

Open Q2 2026 holders CIEN full holder history CIENA CORP SEC filings CIENA CORP company facts CIENA CORP insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
5
Security
CIEN
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
FMR LLC 14% $8,428,496,728 19,113,538 FMR LLC 30 Jun 2026
BlackRock, Inc. 8% -23% $4,377,114,664 -$1,266,939,688 11,274,540 -22% BlackRock, Inc. 31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC 7.5% $4,103,137,259 10,568,831 Vanguard Capital Management 31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC 5.2% $2,868,361,262 7,388,304 Vanguard Portfolio Management 31 Mar 2026
JPMORGAN CHASE & CO 3.9% -48% $2,316,138,123 -$2,159,007,636 5,616,378 -48% JPMORGAN CHASE & CO. 31 Aug 2026
As of 30 Jun 2026, 1,220 institutional investors reported holding
132.06MFull value: 132,063,446 · shares · 30 Jun 2026
shares of CIENA CORP - Common Stock, par value $0.01 per share (CIEN). This represents 92% of the company’s total
144.01MFull value: 144,009,692 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
67%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
FMR LLC 13% 19,113,538 -9.9% 0.41% $9,376,337,063
BlackRock, Inc. 8.8% 12,718,494 -4.9% 0.09% $6,239,184,546
JPMORGAN CHASE & CO 7.8% 11,206,209 +9.6% 0.31% $5,366,990,193
VANGUARD CAPITAL MANAGEMENT LLC 6.4% 9,233,803 +0.7% 0.1% $4,529,734,400
VANGUARD PORTFOLIO MANAGEMENT LLC 5.3% 7,680,665 +4.2% 0.17% $3,767,827,023
STATE STREET CORP 4.6% 6,680,578 +5.9% 0.1% $3,277,224,344
PRICE T ROWE ASSOCIATES INC /MD/ 2.8% 4,071,401 -22% 0.2% $1,997,267,000
GEODE CAPITAL MANAGEMENT, LLC 2.3% 3,370,462 -17% 0.09% $1,647,554,136
AMERICAN CENTURY COMPANIES INC 1.3% 1,851,788 +246% 0.4% $908,413,121
BANK OF AMERICA CORP /DE/ 1.2% 1,788,582 -8.5% 0.06% $877,406,821
Capital World Investors 1.2% 1,755,602 +1.8% 0.1% $861,228,117
Invesco Ltd. 1.2% 1,730,210 +13% 0.07% $848,771,817
NORGES BANK 1.2% 1,703,155 0.08% $835,499,717
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 1.2% 1,677,029 +21% 0.37% $822,683,346
MORGAN STANLEY 1.1% 1,634,630 +4.7% 0.04% $801,884,888
Nuveen, LLC 0.97% 1,391,429 +65% 0.16% $682,579,411
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.87% 1,248,995 -1.8% 0.08% $612,706,987
NORTHERN TRUST CORP 0.85% 1,217,939 +2.6% 0.07% $597,472,157
DIMENSIONAL FUND ADVISORS LP 0.8% 1,153,229 +0.63% 0.1% $565,627,151
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.8% 1,145,480 +34% 0.1% $561,926,667
BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.77% 1,105,383 +8.2% 0.54% $542,098,074
AQR CAPITAL MANAGEMENT LLC 0.73% 1,052,165 +7.7% 0.18% $507,237,989
GOLDMAN SACHS GROUP INC 0.66% 946,611 +22% 0.05% $464,369,116
Legal & General Group Plc 0.62% 887,054 +37% 0.09% $435,153,206
Bank of New York Mellon Corp 0.57% 825,480 -11% 0.07% $404,947,550

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
51
Headline period
Q2 2026
Rows shown
1-25 of 51
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 3,908,102 $1,395,447,609 +$37,998,973 $351.82 329
2026 Q2 132,063,446 $64,583,643,549 -$598,139,172 $490.56 1,220
2026 Q1 134,314,487 $51,824,840,494 -$2,368,719,265 $388.23 1,082
2025 Q4 137,351,368 $32,142,820,569 +$39,454,516 $233.87 851
2025 Q3 139,134,046 $20,273,323,122 -$142,449,066 $145.67 684
2025 Q2 141,010,238 $11,468,438,045 +$481,577,370 $81.33 558
2025 Q1 136,482,829 $8,250,645,953 -$352,226,003 $60.43 542
2024 Q4 140,639,777 $11,927,949,714 -$30,379,194 $84.81 533
2024 Q3 142,165,351 $8,759,802,337 +$137,878,037 $61.59 461
2024 Q2 140,001,910 $6,745,177,951 +$143,699,694 $48.18 449
2024 Q1 137,161,500 $6,776,208,736 +$192,160,909 $49.45 464
2023 Q4 134,005,592 $6,036,621,954 -$79,214,547 $45.01 448
2023 Q3 134,977,056 $6,366,989,947 -$105,230,138 $47.26 466
2023 Q2 137,179,871 $5,828,746,458 -$80,634,569 $42.49 465
2023 Q1 138,682,996 $7,279,718,619 -$41,936,127 $52.52 480
2022 Q4 139,408,197 $7,107,065,096 -$180,505,509 $50.98 448
2022 Q3 144,336,104 $5,838,400,545 +$344,794,490 $40.43 410
2022 Q2 135,142,356 $6,176,263,763 +$21,390,413 $45.70 440
2022 Q1 134,228,774 $8,134,405,743 -$175,237,375 $60.63 480
2021 Q4 135,807,566 $10,450,586,776 -$70,604,523 $76.97 508
2021 Q3 136,655,447 $7,017,619,377 -$328,461,486 $51.35 439
2021 Q2 142,196,886 $8,088,830,406 -$63,184,128 $56.89 455
2021 Q1 143,076,551 $7,828,233,443 +$18,390,334 $54.72 446
2020 Q4 143,689,781 $7,587,963,140 +$410,394,154 $52.85 447
2020 Q3 137,169,579 $5,445,472,887 -$76,893,140 $39.69 457
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