AMOM1.240%
as of Oct 16
COHR
GrowthCOHERENT CORP
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
-44.95%
Held by 3 AI ETFs
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 signals13
Win rate0% (0/13)
Avg buy return-29.80%
AMOM · Weight decrease · 3d
weight 1.410% → 1.240% (-0.170 pp)·stock down 21.3% in the 30 days before
Oct 16·entry $232.90·now $209.29
-10.14%
since Oct 16
AMOM · Weight decrease · 2d
weight 1.410% → 1.280% (-0.130 pp)·stock down 13.6% in the 30 days before
Oct 15·entry $250.60·now $209.29
-16.48%
since Oct 15
AMOM · Weight decrease · 2d
weight 1.580% → 1.450% (-0.130 pp)·stock down 0.4% in the 30 days before
Oct 8·entry $302.35·now $209.29
-30.78%
since Oct 8
AMOM · Weight decrease · 2d
weight 1.700% → 1.580% (-0.120 pp)·stock up 26.2% in the 30 days before
Oct 5·entry $333.64·now $209.29
-37.27%
since Oct 5
AMOM · Weight decrease · 4d
weight 1.750% → 1.570% (-0.180 pp)·stock up 0.9% in the 30 days before
Sep 24·entry $290.61·now $209.29
-27.98%
since Sep 24
AMOM · Weight decrease · 3d
weight 1.750% → 1.620% (-0.130 pp)·stock down 7.7% in the 30 days before
Sep 23·entry $300.60·now $209.29
-30.38%
since Sep 23
AMOM · Weight decrease · 2d
weight 1.750% → 1.670% (-0.080 pp)·stock down 5.1% in the 30 days before
Sep 22·entry $310.39·now $209.29
-32.57%
since Sep 22
AMOM · Accumulation · 5d
weight 1.580% → 1.650% (+0.070 pp)·stock down 23.5% in the 30 days before
Sep 16·entry $289.93·now $209.29Fresh
-27.81%
since Sep 16
AMOM · Accumulation · 5d
weight 1.500% → 1.560% (+0.060 pp)·stock down 18.9% in the 30 days before
Sep 15·entry $271.17·now $209.29Fresh
-22.82%
since Sep 15
AMOM · Accumulation · 5d
weight 1.550% → 1.700% (+0.150 pp)·stock down 5.7% in the 30 days before
Sep 11·entry $305.37·now $209.29Fresh
-31.46%
since Sep 11
-31.04%
since Sep 9
-30.67%
since Sep 8
-22.09%
since Sep 2
AIEQ · Weight decrease · 3d
weight 0.150% → 0.120% (-0.030 pp)·stock down 21.3% in the 30 days before
Oct 18·entry $232.02·now $209.29
-9.80%
since Oct 18
AIEQ · Weight decrease · 2d
weight 0.150% → 0.130% (-0.020 pp)·stock down 21.3% in the 30 days before
Oct 16·entry $232.90·now $209.29
-10.14%
since Oct 16
AIEQ · Weight decrease · 2d
weight 1.120% → 0.150% (-0.970 pp)·stock up 17.3% in the 30 days before
Oct 1·entry $319.19·now $209.29
-34.43%
since Oct 1
AIEQ · Weight decrease · 3d
weight 1.210% → 1.100% (-0.110 pp)·stock up 0.5% in the 30 days before
Sep 25·entry $295.83·now $209.29
-29.25%
since Sep 25
AIEQ · Weight decrease · 2d
weight 1.210% → 1.140% (-0.070 pp)·stock up 0.9% in the 30 days before
Sep 24·entry $290.61·now $209.29
-27.98%
since Sep 24
AIEQ · Accumulation · 5d
weight 1.120% → 1.210% (+0.090 pp)·stock down 3.4% in the 30 days before
Sep 20·entry $321.52·now $209.29Fresh
-34.91%
since Sep 20
AIEQ · Weight increase · 3d
weight 1.010% → 1.120% (+0.110 pp)·stock down 3.4% in the 30 days before
Sep 18·entry $317.36·now $209.29Fresh
-34.05%
since Sep 18
AIEQ · Weight increase · 2d
weight 1.010% → 1.110% (+0.100 pp)·stock down 9.0% in the 30 days before
Sep 17·entry $295.98·now $209.29Fresh
-29.29%
since Sep 17
-28.61%
since Sep 10
-25.75%
since Sep 4
-23.06%
since Sep 1
-27.37%
since Aug 2
-43.23%
since Jul 1
-42.33%
since May 30
-41.62%
since May 20
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 Oct 18
The AI ETFs are trimming COHR: AMOM has cut its weight in three consecutive steps from 1.58% to 1.28%, and AIEQ has gone from 0.13% to 0.12%, with LQAI holding a small 0.11% position. This partial exit agrees with the Too Hard verdict in direction, but the AIs are probably reacting to momentum and valuation signals rather than to any judgment about whether the business can be modelled.
- Circle of CompetenceCoherent sells lasers, optical components and datacom transceivers whose demand swings with AI data-center build-outs, and a history of large acquisitions and shifting end markets make ten-year unit economics hard to project.
- Economic Moat
- Management
- Financial Health
- Margin of Safety
The framework stops at the circle of competence because the earning power of a fast-changing optical and laser supplier tied to AI capex cannot be reliably projected over ten years. The valuation (60x earnings, 39x EV/EBITDA, 8.4% ROE) would likely have offered no margin of safety anyway, but the stages after the first are not formally scored.
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.