Ciena

CIEN · Optical & networking
$378.44 -5.35% LIVE

Prices as of 2026-08-29 03:16 UTC. Updates live in your browser.

Market sentiment score
23 Cool
FROZENCOOLNEUTRALWARMHOT
Momentum -11.7
Relative strength -7.2
Trend -8.5
Volume +3.4
Volatility +1.5
Drawdown -4.6

Base 50, components added, then compressed onto a 2-98 scale. The formula is published and identical on every page.

Market sentiment history

0 50 100 30 Jul 28 Aug
20-session change
-23
Period high
79
Period low
17
Today
23

Trading sessions only, so each step is one market day against the one before it. Free history covers the last 30 days; scores are recorded after every US close.

What the score is reading for CIEN

At the Friday 28 August close, CIEN scored 23, 26th of the 34 names here, and only one input sat above the board's median for it: volume at +3.4. The other five were at or below where the typical name on this board was reading, so the score rested on that one component rather than on broad agreement between them. Pulling the other way was momentum at -11.7 — the day's move against the previous close.

Across the 20 sessions recorded since 30 July, CIEN has scored between 17 and 79, and that 23 sits near the bottom of that range. Net across the window it is down 23 points, and the largest single-session move was a rise of 44 points on 26 August.

Figures, not reasons. Every number above is the formula's own output for Ciena or a score this site published on a named day; the score describes how the price behaved and has no view on why.

X mentions

0 17 34 21 Aug 27 Aug
Posts, last full day
22
vs prior day
-
Rank on the board
32 / 34
Period high
34

Posts on X carrying $CIEN, counted by this site directly against the X API over Thursday 27 August, retweets excluded. Weekdays only - weekend counts are collected but run around half a weekday across the whole board, so they are withheld rather than charted beside trading days. Below 25 posts a day the percentage is suppressed, because a move of a few posts is a few people rather than a change in attention.

This measures how much Ciena is being talked about, not whether the talk is positive. Across the whole board, post volume has no relationship with the direction of a day's move - the numbers are here. It sits beside the sentiment score rather than inside it. Full X mentions board →

Market cap
$53.6B
5-day
-4.38%
Turnover
$0.5B
52-week low
$90.00
52-week high
$637.51
In range
53%

What Ciena does

Supplies optical transport systems that carry traffic between datacentres and across carrier networks, increasingly sold direct to cloud operators.

What moves CIEN

Related names in optical & networking

ANET
Arista Networks
57 · Warm
MRVL
Marvell Technology
9 · Frozen
LITE
Lumentum
52 · Neutral
COHR
Coherent
24 · Cool
CRDO
Credo Technology
37 · Neutral

See all 6 optical & networking stocks →

Reading on CIEN

Photonics is the AI infrastructure trade now - and 2027 is when it gets decided
Outlook · 12 min
Optical and networking stocks are outperforming quietly - and X has barely noticed
Analysis · 5 min
Roundhill launches LYTE photonics ETF - and why optics now runs AI infrastructure
ETFs · 9 min

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Common questions

What is datacentre interconnect?

The long-haul links between separate datacentre campuses. As AI training spans multiple sites, the bandwidth needed between them rises sharply.

What is Ciena's market sentiment score right now?

CIEN currently scores 23 out of 100, which reads as cool. The score combines six weighted, price-based inputs: momentum, relative strength against the complex, trend against its moving averages, volume, volatility and drawdown from the 52-week high. The full breakdown is shown above.

Where does CIEN sit in the AI supply chain?

Ciena is grouped under optical & networking. The interconnect layer. Once a model spans thousands of accelerators, the switches and optics between them become the bottleneck.