Last refreshed: September 4, 2026 (US ET)
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COHR

Growth

COHERENT CORP

Information Technology·Electronic Components

Coherent Corp. develops, manufactures, and markets engineered materials, optoelectronic components and devices, and laser systems for the use in the industrial, communications, electronics, and instrumentation markets worldwide. It operates through three segments: Networking, Materials, and Lasers. The Networking segment offers transceivers, systems, subsystems, modules, components, optics, and semiconductor devices for datacenter and communications applications.

Close · 3M

+3.65%

COHR · 3M

+3.65%

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Held by 2 AI ETFs

AMOM1.550%

as of Sep 2

AIEQ0.980%

as of Sep 4

Signal performance

Each tracked ETF's moves on this stock, grouped by fund. Returns are measured from the signal date to the latest close — hypothetical, no commissions or slippage.

Buy signals6
Win rate0% (0/6)
Avg buy return-19.58%
AMOMnow 1.550% of fund1 signal

AMOM · New entry · 1d

weight 0 → 1.550% (new)·stock down 1.0% in the 30 days before

Sep 2·entry $268.64·now $264.41Fresh

-1.57%
since Sep 2
AIEQnow 0.980% of fund7 signals

AIEQ · New entry · 1d

weight 0 → 1.040% (new)·stock down 3.7% in the 30 days before

Sep 1·entry $272.03·now $264.41Fresh

-2.80%
since Sep 1

AIEQ · Exit · 1d

weight 0.030% → 0 (exited)·stock down 28.7% in the 30 days before

Aug 2·entry $288.14·now $264.41

-8.24%
since Aug 2

AIEQ · New entry · 1d

weight 0 → 0.050% (new)·stock up 2.8% in the 30 days before

Jul 1·entry $368.65·now $264.41Fresh

-28.28%
since Jul 1

AIEQ · Exit · 1d

weight 0.770% → 0 (exited)·stock up 18.5% in the 30 days before

May 30·entry $362.90·now $264.41

-27.14%
since May 30

AIEQ · Weight decrease · 2d

weight 0.780% → 0.730% (-0.050 pp)·stock up 4.3% in the 30 days before

May 20·entry $358.50·now $264.41

-26.25%
since May 20

AIEQ · Weight increase · 2d

weight 0.690% → 0.820% (+0.130 pp)·stock up 31.4% in the 30 days before

May 14·entry $404.94·now $264.41Fresh

-34.70%
since May 14

AIEQ · Weight decrease · 2d

weight 0.490% → 0.440% (-0.050 pp)·stock up 38.8% in the 30 days before

Apr 29·entry $304.93·now $264.41

-13.29%
since Apr 29
LQAIno longer held4 signals

LQAI · Exit · 1d

weight 0.590% → 0 (exited)·stock up 21.5% in the 30 days before

May 12·entry $374.01·now $264.41

-29.30%
since May 12

LQAI · Weight increase · 2d

weight 0.510% → 0.590% (+0.080 pp)·stock up 23.5% in the 30 days before

May 11·entry $379.69·now $264.41Fresh

-30.36%
since May 11

LQAI · Weight increase · 2d

weight 0.510% → 0.540% (+0.030 pp)·stock up 33.0% in the 30 days before

May 1·entry $329.50·now $264.41Fresh

-19.75%
since May 1

LQAI · Weight decrease · 2d

weight 0.560% → 0.510% (-0.050 pp)·stock up 24.8% in the 30 days before

Apr 28·entry $303.97·now $264.41

-13.01%
since Apr 28

Sell signals show what the stock did after the AI exited. A negative number means the AI's exit was well-timed.

Buffett-style framework

Too hard to callas of May 1

The AI ETFs LQAI and AIEQ currently hold COHR but are both showing a weight decrease trend, signaling a reduction in their positions. This cautious approach by the AI funds aligns with the framework's 'Too Hard' verdict, which indicates that COHR's business is too unpredictable for reliable long-term analysis within a value investing context.

  • Circle of CompetenceThe company's operations in advanced materials, lasers, and networking products are highly technical and subject to rapid technological change, making the predictability of unit economics over a ten-year horizon genuinely challenging.
  • Economic MoatNot applicable as the company falls outside the circle of competence.
  • ManagementNot applicable as the company falls outside the circle of competence.
  • Financial HealthNot applicable as the company falls outside the circle of competence.
  • Margin of SafetyNot applicable as the company falls outside the circle of competence.

COHERENT CORP operates within a highly dynamic segment of the Information Technology sector, specifically in advanced materials, lasers, and networking products. The inherent rapid technological change and evolving industry structure make it difficult to reliably project the company's unit economics and cash flows over a ten-year period. Therefore, this company falls outside the framework's circle of competence, precluding further assessment of its economic moat, management, financial health, or margin of safety.

Educational interpretation generated by AI applying frameworks Warren Buffett documented in his shareholder letters and other public writings. Not a statement by Mr. Buffett or Berkshire Hathaway, and not investment advice.