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CIEN — structural market context

Ciena Corporation

Structural market context from public regulatory and market data, shown with its as-of dates. Descriptive only: nothing on this page is a recommendation, a prediction, or advice to buy or sell any security.

What changed

As of the close on Oct 16. Each line shows the earlier value, the later value and their dates.

Price

Close $332.73 (Oct 16) vs $356.52 (Oct 15): −6.67%.

Volume

1.08× its 20-session average (3.0M) on Oct 16.

Includes pre- and post-market trading.

Short interest

Short interest 3.9M shares (settlement Sep 30) vs 3.6M (Sep 15).

No new publication in this window. Latest: settlement Sep 30, published Oct 10.

Fails-to-deliver

Latest file (settlements Sep 15–Sep 30, published Oct 16): 1 day with fails, largest 901 shares on Sep 15.

Previous file (settlements Sep 1–Sep 14, published Sep 30): 5 days with fails, largest 39K shares on Sep 8.

Analyst rating actions

None recorded in this window.

Insider filings (Form 4)

None recorded in this window.

CIEN short interest & days to cover

SHARES SHORT
3.9M
% OF FLOAT
—
DAYS TO COVER
1.4
CHANGE VS PRIOR
+7.7%

FINRA consolidated short interest, reported twice a month and published ~2 weeks after each settlement date. % of float uses reported free float. · as of 2026-09-30 (18d ago)

CIEN fails-to-deliver (FTD)

Settlement dateFailed sharesPrice
2026-09-15 · 33d901$319.64
2026-09-10 · 38d1K$338
2026-09-08 · 40d39K$321

SEC fails-to-deliver files, published twice a month with ~6 weeks of delay.

CIEN insider buying and selling (Form 4)

Last 12 months, Form 4 codes P and S: 0 purchases · 16 sales

InsiderTypeSharesValueFiled
SMITH GARY B · director, officer: President & CEOSell (S)3K$1.1M2026-10-13
Kosaraju Sheela · officer: EVP & Chief Legal OfficerSell (S)2K$746K2026-10-06
Graff Marc D. · officer: EVP & Chief Financial OfficerSell (S)97$34K2026-10-06
Phipps Jason · officer: EVP & Chief Customer OfficerSell (S)3K$934K2026-10-06
Cumello Joseph · officer: EVP & General Mgr.Sell (S)2K$569K2026-09-29

SEC Form 4 filings: purchases and sales reported on Form 4 (transaction codes P and S) only; grants and option exercises excluded. Attributed public records.

CIEN analyst ratings

FirmActionRatingPublished
BernsteininitialiseOutperform2026-09-30
Bernsteinprice_target—2026-09-30
Evercore ISIupgradeOutperform (from Mixed)2026-09-21
Evercore ISIprice_target—2026-09-21
Cowen & Co.holdBuy2026-09-17

Rating actions as published by the firms, from public feeds. They are not graded here.

Frequently asked questions

Are insiders buying CIEN?
In the last 12 months of SEC Form 4 filings, CIEN recorded 0 insider purchases and 16 sales reported on Form 4 (transaction codes P and S; grants and option exercises excluded). These are attributed public records — information, not instruction.
What do analysts say about CIEN?
The most recent action: Bernstein initialise to Outperform on 2026-09-30. Rating actions are shown as published by the firms; they are not graded here.
Is this page telling me to buy or sell CIEN?
No. Everything on this page is descriptive, structural market context from public data, shown with its as-of dates. TradeAI News does not issue directional recommendations, price predictions, or buy/sell advice — for any ticker.
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CIEN: the full history

Latest rows shown. Full history, market-wide screens, cluster detection and the context journal live in the dashboard.

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Not financial advice. Trading involves risk. Descriptive structural context, never a recommendation.