$351.82▼ −3.10 · −0.9%from $354.92 the session before · Sep 30, 2026 close · end of day
Open
$354.92
High
$359.98
Low
$340.52
Day's range
$195.5% of the previous close
VWAP
$348.11close +1.1% from it
Volume, shares
2.66M0.93× the 20-session average
Traded, $
$925.7M
Trades
64.4K41 shares per trade
Previous close
$354.92−3.10 to the close
Market cap
$49.89Bat the close of Sep 30
Day range58% of the way up
$340.52$359.98
52-week range12% of the way up
$311.60 Sep 3$637.51 Jun 3
−45% from the high · +13% from the low
The desk read · Sep 30expiry Oct 16 · 16 days
balanced
options read
calls 52% · puts 48% of OI
0.93
puts per call, by OI
Oct 16 expiry 1.25
$385.00
max pain
+9.4% from the close
$400.00
most call OI
696 contracts · +14% from the close
▲ +2.2%
option OI on the day
+2.42K contracts · 112K open
Balanced into a 16-day expiry: 0.93 puts per call by open interest, option OI +2.2% on the day, the most call OI sits at $400.00, the most put OI at $240.00, max pain $385.00.
Options
Sep 30 open interest · 16 expiries listed
CIEN options carry 112K contracts of open interest across 16 expiries, 23% of it in the Oct 16 contract, with 0.93 puts per call.
Open interest by expirythe next 8 of 16 expiries · share of all open interest
Option open interest by expiry, the next 8 expiries
Expiry
Call OI · on the day
Put OI · on the day
Puts per call
Share of OI %
Strikes
Oct 22 days
6.9K+575
5.42K−143
0.78
11
118
Oct 99 days
3.39K+511
4.23K+347
1.25
6.8
105
Oct 1616 days
11.4K+91
14.2K+10
1.25
23
102
Oct 2323 days
1.19K+8
1.6K+266
1.35
2.5
66
Oct 3030 days
562+70
527+59
0.94
0.98
56
Nov 637 days
68+9
98+31
1.44
0.15
56
Nov 2051 days
675+70
1.02K+101
1.51
1.5
35
Dec 1879 days
5.48K+16
7.15K+15
1.31
11
85
59% of open interest sits beyond the Oct 16 contract · 102 strikes listed for it · 112K contracts open in all
Monthly contractOct 16 expiry · 16 days
The Oct 16 contract holds 11.4K calls and 14.2K puts, the most call OI at $400.00 and the most put OI at $240.00; max pain $385.00, +9.4% from the close.
Call OI, contracts
11.4K+91 on the day
Put OI, contracts
14.2K+10 on the day
Puts per call, by OI
1.25all expiries 0.93
Max pain
$385.00+9.4% from the close
Strikes listed
102for this expiry
Open interest by strike, contractstop three strikes each side
Calls
Strike
Puts
663
$500.00
577
$440.00
696
$400.00
$280.00
836
$270.00
930
$240.00
3.19K
Open interest added on the day, contractsthree largest additions each side
Calls
Strike
Puts
+13
$360.00
+29
$350.00
+15
$345.00
$305.00
+5
$300.00
+9
$285.00
+21
Close $ · S&P 500 rebased to the first close126 sessions to Sep 30 · axis fixed at 4 × ATR-14 around the last close · hover or tap a session and the read beside the chart follows it
Revenue $1.67B, +37% on a year earlier; profit $266.4M, +430% in the Aug 2026 quarter, consolidated.
Last 8 quarters, consolidatedUS dollars as filed · year on year against the same quarter a year earlier · market: close on the first session after the filing against the last close before it, S&P 500 over the same session
Quarterly results of CIEN on the consolidated basis with the market's move on the first session after each filing
Quarter
Revenue $
Revenue YoY
Profit $
Profit YoY
EPS $
Market on the day
Aug 2026filed Sep 3
$1.67B
▲ +37%
$266.4M
▲ +430%
1.83
▲ +1.1%S&P 500 −0.4% · +1.5 pp
May 2026filed Jun 4
$1.57B
▲ +40%
$218.2M
▲ +2,300%
1.49
▼ −8.9%S&P 500 −2.6% · −6.3 pp
Jan 2026filed Mar 5
$1.43B
▲ +33%
$150.3M
▲ +240%
1.03
—not reached
Nov 2025filed Dec 12
$1.35B
▲ +20%
$19.5M
▼ −47%
0.13
—not reached
Aug 2025filed Sep 3
$1.22B
▲ +29%
$50.3M
▲ +250%
0.35
▲ +1.1%S&P 500 −0.4% · +1.5 pp
May 2025filed Jun 4
$1.13B
▲ +24%
$9.0M
—
0.06
▼ −8.9%S&P 500 −2.6% · −6.3 pp
Feb 2025filed Mar 5
$1.07B
▲ +3.3%
$44.6M
▼ −10%
0.31
—not reached
Nov 2024filed Dec 20
$1.12B
▼ −0.48%
$37.0M
▼ −59%
0.26
—not reached
By fiscal yearfiscal years as filed in the 10-K · named by the year the fiscal year ends
Financial-year results of CIEN on the consolidated basis, summed from the quarters filed
Year
Revenue $
Revenue YoY
Profit $
Profit YoY
EPS $
FY25to Nov 2025
$4.77B
▲ +19%
$123.3M
▲ +47%
0.85
FY24to Nov 2024
$4.01B
▼ −8.5%
$84.0M
▼ −67%
0.58
FY23to Oct 2023
$4.39B
▲ +21%
$254.8M
▲ +67%
1.71
FY22to Oct 2022
$3.63B
▲ +0.33%
$152.9M
▼ −69%
1.00
FY21to Oct 2021
$3.62B
▲ +2.5%
$500.2M
▲ +38%
3.19
Fundamentals
consolidated · filings to Aug 2026 · close $351.82 on Sep 30
CIEN trades at 79 times trailing earnings, 16 times book value, revenue +33% over twelve months, market cap $49.89B.
Valuation
Market cap
$49.89Bon Sep 30
Price to earnings
79consolidated · four quarters to Aug 2026
Trailing EPS
$4.48diluted · consolidated · four quarters to Aug 2026
Price to book
16consolidated · balance sheet to Aug 2026
Book value a share
$21.56consolidated · balance sheet to Aug 2026
Debt to equity
—
Return on equity
22%trailing profit over average equity · consolidated
Dividend yield
—
Price to sales
8.3market cap over revenue, four quarters to Aug 2026
Shares outstanding
142Mon Sep 30
Growthsums of the four quarters filed to Aug 2026 · growth against the four quarters before them · consolidated
Revenue, trailing 12 months
$6.02Bfour quarters to Aug 2026
Revenue growth, 12 months
▲ +33%against the twelve months before
Revenue 3-year CAGR
▲ +13%trailing twelve months against the twelve months 3 years earlier · consolidated
Profit, trailing 12 months
$654.4Mfour quarters to Aug 2026
Profit growth, 12 months
▲ +360%against the twelve months before
Profit 3-year CAGR
▲ +44%trailing twelve months against the twelve months 3 years earlier · consolidated
Shareholding
quarter to Jun 2026 · SEC Form 13F
13F managers hold 180% of shares, FMR LLC the largest at 27%, BlackRock, Inc. 18% and JPMORGAN CHASE & CO 16%, as filed for the quarter to Jun 2026.
27.0%17.9%15.8%117.8%
FMR LLC 27.0%
BlackRock, Inc. 17.9%
JPMORGAN CHASE & CO 15.8%
Other 13F managers 117.8%
Held by 13F managers
180%of shares outstanding
Shares held
253M−2.8% on Mar 2026 among managers filing both
Managers holding
1,1511,015 a quarter earlier
Largest holder
27%FMR LLC
Largest 10 holderspercent of shares outstanding · change in shares against the previous quarter
Largest 13F holders of CIEN
Manager
Shares
Of outstanding
Value
Change on quarter
FMR LLC
38.2M
27%
$18.75B
−4.19M
BlackRock, Inc.
25.4M
18%
$12.48B
−1.31M
JPMORGAN CHASE & CO
22.4M
16%
$10.73B
—
VANGUARD CAPITAL MANAGEMENT LLC
18.5M
13%
$9.06B
+129K
VANGUARD PORTFOLIO MANAGEMENT LLC
15.4M
11%
$7.54B
+623K
STATE STREET CORP
13.4M
9.4%
$6.55B
+743K
GEODE CAPITAL MANAGEMENT, LLC
6.74M
4.8%
$3.30B
−1.39M
AMERICAN CENTURY COMPANIES INC
3.7M
2.6%
$1.82B
+2.63M
BANK OF AMERICA CORP /DE/
3.58M
2.5%
$1.75B
−332K
Capital World Investors
3.51M
2.5%
$1.72B
+61.6K
Insider tradesSEC Forms 3, 4 and 5 · the latest 10
No open-market insider buying or selling in the last 90 days.
CIEN insider trades
Insider
Trade
Shares
Price
Held after
Cumello JosephOfficer
sold · Jun 26, 2026
1,586
$466.33
42,872
Graff Marc D.Officer
sold · Jun 24, 2026
126
$449.36
127,081
SMITH GARY BDirector,Officer
withheld for tax · Jun 20, 2026
3,102
$428.22
260,518
SMITH GARY BDirector,Officer
withheld for tax · Jun 20, 2026
1,743
$428.22
258,775
SMITH GARY BDirector,Officer
withheld for tax · Jun 20, 2026
937
$428.22
257,838
SMITH GARY BDirector,Officer
withheld for tax · Jun 20, 2026
2,985
$428.22
263,620
Hoffman GrantOfficer
granted · Jun 22, 2026
6,517
$0.00
6,517
Rothenstein David MOfficer
withheld for tax · Jun 20, 2026
220
$428.22
185,231
Rothenstein David MOfficer
withheld for tax · Jun 20, 2026
811
$428.22
185,887
Rothenstein David MOfficer
withheld for tax · Jun 20, 2026
204
$428.22
186,698
Corporate actions
exchange records
No corporate action on record for CIEN yet.
Price history
131 sessions on record · to Sep 30 · end of day
CIEN is −2.4% over 20 sessions against the S&P 500's +0.1%, 45% below its 52-week high, realised volatility 68% annualised.
Returns against S&P 500longest window first · S&P 500 over the same sessions
Returns of the stock and S&P 500 over six windows, longest first
Window
From $
CIEN %
S&P 500 %
Difference pp
120 sessionssince Apr 9
$487.35
▼ −28%
▲ +12%
−40
60 sessionssince Jul 7
$418.93
▼ −16%
▲ +2.0%
−18
20 sessionssince Sep 1
$360.32
▼ −2.4%
▲ +0.11%
−2.5
5 sessionssince Sep 23
$355.91
▼ −1.1%
▼ −0.67%
−0.48
1 sessionsince Sep 29
$354.91
▼ −0.87%
▼ −0.21%
−0.66
Averages of the closeclose against each average
5-session average
$353.25close −0.40% from it
20-session average
$345.01close +2.0% from it
50-session average
$374.65close −6.1% from it
Range and volumetrue range over 14 sessions · high to low over 20 · volume against the 20-session average
Average true range, 14
$216.0% of the close
Average day's range, 20
$205.7% of the close
Volume against 20 sessions
0.93×2.66M vs 2.89M average
Volatility and co-movement with S&P 500annualised from daily returns
Realised volatility, 20
68%≈ ±4.3% a session · moved more than that on 6 of 20
Realised volatility, 60
75%≈ ±4.7% a session · moved more than that on 19 of 60
Beta to S&P 500, 60
2.73moved with S&P 500 on 37 of 60 sessions
Up and down sessionscloses above and below the previous close
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