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Coherent Sheds 12% After Q1 2027 Earnings Hit EDGAR

As seen on the 24/7 Wall St. homepage on November 5, 2026.

COHR Coherent

Regular session

11:20am ET

$161.11

-12.20% open $183.51

A 12.2% drop lands the day after Coherent's Q1 2027 earnings filing hit EDGAR, erasing roughly $4 billion from the optical supplier's value. Watch whether buyers defend the open-gap level.

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Coherent slid through the entire session to finish near $161.11, wiping roughly $4 billion from the optical supplier's market value in a single regular trading day.

The selloff landed the day after Coherent's Q1 2027 earnings filing appeared on EDGAR, so investors found something in the filing that the pre-open price had not yet reflected. That kind of post-filing gap down tends to reflect a close reading of the numbers rather than a knee-jerk reaction.

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An early plunge, a failed mid-session bounce and a fresh leg down before stabilizing near $161 rarely signals a one-day shakeout.

The level to keep an eye on is the opening gap near $183. If buyers cannot reclaim that zone in coming sessions, it becomes overhead resistance rather than support, making recovery meaningfully harder for holders already sitting on steep losses.

Sources

COHR company overview

Mentioned: COHR

Related Market Updates

COHR Coherent

Q1 2027

Nov 4, 4:05pm ET

EPS

$2.09

est $1.97 +6.3%

Revenue

$2.37B

est $2.30B +2.9%

AI datacenters switching from copper to optical now drive 82% of Coherent's sales, and management guided fiscal 2027 pro forma revenue growth above 60% with its first $3 billion quarter expected by year-end. Both lines beat expectations.

Earnings · 2027 Q1 James Robert Anderson Director, Applied Materials

Nov 4, 4:05pm ET

As AI datacenters transition from copper to optical connectivity, Coherent's broad photonics platform and manufacturing scale position us to help customers meet rising needs for bandwidth and energy efficiency. We expect fiscal 2027 pro forma revenue growth to exceed 60%.

CEO Jim Anderson just put hard math behind the copper-to-optical shift in AI datacenters, guiding fiscal 2027 pro forma revenue growth past 60% on the first-quarter earnings call. That is a rare growth commitment from a $38 billion photonics supplier, and it raises the bar for every optical networking rival chasing the same buildout.

Earnings · 2027 Q1 James Robert Anderson Director, Applied Materials

Nov 4, 4:05pm ET

Q1 marked a strong start to fiscal 2027, with pro forma revenue up 56% year over year and non-GAAP EPS up 80%. Our established businesses delivered strong growth, while new growth areas are beginning to ramp.

Earnings are growing faster than sales at Coherent, a sign the AI datacenter optics boom is landing in margins and not just order books. Anderson says the newer product lines are only starting to contribute, so fiscal 2027 guidance is the number to track from here.

Earnings · 2027 Q1 James Robert Anderson Director, Applied Materials

Nov 4, 4:05pm ET

As AI datacenters transition from copper to optical connectivity, Coherent's broad photonics platform and manufacturing scale position us to help customers meet rising needs for bandwidth and energy efficiency. We expect fiscal 2027 pro forma revenue growth to exceed 60%.

CEO Jim Anderson just put hard math behind the copper-to-optical shift in AI datacenters, guiding fiscal 2027 pro forma revenue growth past 60% on the first-quarter earnings call. That is a rare growth commitment from a $38 billion photonics supplier, and it raises the bar for every optical networking rival chasing the same buildout.

Earnings · 2027 Q1 James Robert Anderson Director, Applied Materials

Nov 4, 4:05pm ET

Q1 marked a strong start to fiscal 2027, with pro forma revenue up 56% year over year and non-GAAP EPS up 80%. Our established businesses delivered strong growth, while new growth areas are beginning to ramp.

Earnings are growing faster than sales at Coherent, a sign the AI datacenter optics boom is landing in margins and not just order books. Anderson says the newer product lines are only starting to contribute, so fiscal 2027 guidance is the number to track from here.

Earnings · 2027 Q1 James Robert Anderson Director, Applied Materials

Nov 4, 4:05pm ET

Q1 marked a strong start to fiscal 2027, with pro forma revenue up 56% year over year and non-GAAP EPS up 80%. Our established businesses delivered strong growth, while new growth areas are beginning to ramp.

Earnings are growing faster than sales at Coherent, a sign the AI datacenter optics boom is landing in margins and not just order books. Anderson says the newer product lines are only starting to contribute, so fiscal 2027 guidance is the number to track from here.

Earnings · 2027 Q1 James Robert Anderson Director, Applied Materials

Nov 4, 4:05pm ET

As AI datacenters transition from copper to optical connectivity, Coherent's broad photonics platform and manufacturing scale position us to help customers meet rising needs for bandwidth and energy efficiency. We expect fiscal 2027 pro forma revenue growth to exceed 60%.

CEO Jim Anderson just put hard math behind the copper-to-optical shift in AI datacenters, guiding fiscal 2027 pro forma revenue growth past 60% on the first-quarter earnings call. That is a rare growth commitment from a $38 billion photonics supplier, and it raises the bar for every optical networking rival chasing the same buildout.

Earnings · 2027 Q1 James Robert Anderson Director, Applied Materials

Nov 4, 4:05pm ET

As AI datacenters transition from copper to optical connectivity, Coherent's broad photonics platform and manufacturing scale position us to help customers meet rising needs for bandwidth and energy efficiency. We expect fiscal 2027 pro forma revenue growth to exceed 60%.

CEO Jim Anderson just put hard math behind the copper-to-optical shift in AI datacenters, guiding fiscal 2027 pro forma revenue growth past 60% on the first-quarter earnings call. That is a rare growth commitment from a $38 billion photonics supplier, and it raises the bar for every optical networking rival chasing the same buildout.

Biggest movers · At the close Oct 30, 4:11pm ET

Gainers

REGNRegeneron$926.96+13.2%
AZNAstraZeneca$186.4+6.9%
SPOTSpotify$593.99+6.6%
TMUST-Mobile$156.39+6.2%
IMOImperial Oil$138.4+5.8%

Losers

INTCIntel$65.12-29.3%
APPSDigital Turbine$8.9-15.8%
SNDKSanDisk$1,149.86-13.6%
AAOIApplied Optoelectronics$68.99-12.9%
COHRCoherent$209.16-11.8%

Intel closed down 29.27%, the widest single-session move across 380 priority names. Regeneron led the other direction, with chip and optics names filling out the downside.

Biggest movers · At the close Oct 26, 4:10pm ET

Gainers

LITELumentum$818.26+8.2%
AAOIApplied Optoelectronics$72.44+7.3%
DOCNDigitalOcean$99.48+6.7%
ARMArm$223.68+6.3%
COHRCoherent$221.57+5.9%

Losers

PBR-APetrobras$19.86-15.6%
PBRPetrobras$22.46-14.1%
MELIMercadoLibre$1,665.83-8.0%
DASHDoorDash$169.5-5.5%
FIGFigma$23.48-4.7%

Optical and chip names owned the close, with Lumentum up 8.21% to $818.26 and Coherent, Applied Optoelectronics and Arm all gaining more than 5%. Both Petrobras lines sat at the bottom, the preferred shares down 15.6%.

Biggest movers · At the close Oct 22, 4:10pm ET

Gainers

SPOTSpotify$582.23+10.8%
LCIDLucid$3.5+8.9%
BXBlackstone$118.69+8.3%
ACNAccenture$258.15+7.5%
NDAQNasdaq$103.09+7.3%

Losers

MRNAModerna$202.11-17.8%
COHRCoherent$207.45-12.7%
AAOIApplied Optoelectronics$68.18-11.8%
LRCXLam Research$230.24-11.7%
LITELumentum$754.19-11.3%

Moderna's 17.8% drop was the single biggest move at Tuesday's close, and four of the five worst performers were chip and photonics names. Spotify topped the winners.