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STOCK COMPARISON

Acon Optics Communications vs Cisco Systems: Fair Value & Quality

Both stocks run through our valuation models. Here is how Acon Optics Communications (6820) and Cisco Systems (CSCO) compare, as of Sep 25, 2026.

As of Sep 25, 2026, Fair Value Calculator sees Cisco Systems as the more attractively valued of the two: Acon Optics Communications trades at TWD 362 versus a fair value of TWD 205 (-43%), while Cisco Systems trades at $106 versus $117 (+10%).
Acon Optics Communications
6820.TWO · TWD · Communication Services
-43%
upside to fair value
overvalued
PriceTWD 362
Fair ValueTWD 205
Quality54/100
Cisco Systems
CSCO · USD · Information Technology
+10%
upside to fair value
undervalued
Price$106
Fair Value$117
Quality74/100
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Head-to-head numbers

Green is the better side of a row, red the weaker one (for valuation multiples: lower = cheaper). Grey rows are for reference only and are not scored.

betterweakerfor reference, not scored

Acon Optics CommunicationsCisco Systems
Valuation
846.7×P/E (TTM)35.5×
9.79×P/S (TTM)7.87×
21.56×P/B10.21× · book value is mostly goodwill
n/aEV/EBITDA29.0×
n/aPEG1.68×
−43.2%Fair value upside+10.0%
0.1%Dividend yield1.6%
TWD 0.30Dividend per share$1.65
Profitability
-3%Operating margin25%
0.43×EBIT margin trend (5Y)0.75×
2%Return on equity25%
2%Return on assets7%
Growth
-12%Revenue growth (YoY)12%
3.4%Avg. growth/yr (3Y)3.2%
3.3%Avg. growth/yr (5Y)2.8%
−17.8%Value creation/yr+1.7%
Balance & size
6.4×Interest coverage (EBIT/interest)7.4×
n/aDebt / equity0.49×
$258MMarket cap$478B
expensiveGrowth qualityhealthy
Valuation multiples (P/E, P/S, P/B, EV/EBITDA) are shown but not scored here: the two companies sit in different sectors, and multiples only compare fairly between similar business models. PEG stays scored, as it relates the P/E to growth.

Cisco Systems leads: 2 to 8 metric wins.

n/a = not meaningfully computable, for example with negative equity.

Quality in detail

The quality score, broken down into the same factor families as on the stock page, 0 to 100 per family.

Acon Optics Communicationsof which business quality 55 · market factors 80 Cisco Systemsof which business quality 70 · market factors 70
ProfitabilityMargins and returns on capital today
39
58
Quality GrowthAre margins and returns improving?
50
46
CashflowEarnings quality: real cash, not paper profit
36
85
Fin. StrengthBalance sheet, leverage, solvency risk
70
64
InvestmentDisciplined investing over empire-building
66
75
Low VolatilityCalm price path (market factor)
50
59
MomentumPrice trend over the last 3–12 months (market factor)
93
72
52W MomentumDistance to the 52-week high (market factor)
92
82
Net IssuanceShare count: buybacks or dilution?
79
97

What the models say

How far the median fair value (base case) per model family sits from the current price, in percent. The amount in the currency of the trading venue is shown underneath.

above the price, more than 15% above close to the price, 85% to 115% of the price below the price, more than 15% below

Model familyAcon Optics CommunicationsPrice TWD 362Cisco SystemsPrice $106
DCF Modelsn/a-32%below the price$72.20
Earnings-Based-65%below the priceTWD 127-76%below the price$25.45
Dividend Discountn/a-71%below the price$31.20
Multiples+6%close to the priceTWD 384-50%below the price$53.39
Asset-Based+1%close to the priceTWD 366-93%below the price$7.96
Growth DCFn/a-41%below the price$62.97
Economic Profit-14%close to the priceTWD 310-73%below the price$28.50
Growth Earnings-50%below the priceTWD 180-52%below the price$50.63
Minimum-65%below the priceTWD 127-93%below the price$7.96
Maximum+6%close to the priceTWD 384-32%below the price$72.20
Median-14%close to the priceTWD 310-62%below the price$40.91
Geometric mean-31%below the priceTWD 251-67%below the price$34.92

Minimum, maximum, median and geometric mean refer to the family values in this table. Geometric because deviations are ratios: half the price and twice the price average to 100%, not 125%.

Acon Optics Communications: 10 of 14 models see the stock below the current price.

Cisco Systems: 26 of 26 models see the stock below the current price.

Scenario ranges

From our cautious bear scenario to the optimistic bull scenario. The white tick is the current price (value above it), the green tick the fair value (value below it): if the price sits left of the fair value, there is room to rise.

Acon Optics Communications
Price TWD 362
Fair Value TWD 205
Bear TWD 154Bull TWD 234
Cisco Systems
Price $106
Fair Value $117
Bear $79.50Bull $149

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Ranked within their sector

Where each stock sits within its sector peer group. Band = middle 50% of peers, tick = median, dot = this stock.

Acon Optics Communications · Communication Services

Quality score54 · above median
Fair value upside-43% · below median

Cisco Systems · Information Technology

Quality score74 · Top 25%
Fair value upside+10% · above median

Bottom line

As of Sep 25, 2026, Fair Value Calculator sees Cisco Systems as the more attractively valued of the two: Acon Optics Communications trades at TWD 362 versus a fair value of TWD 205 (-43%), while Cisco Systems trades at $106 versus $117 (+10%).

Cisco Systems has the higher quality score (74/100).

Open Cisco Systems live analysis →

More comparisons

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A model-based valuation snapshot from 26 models. Values change with price and fundamentals; the date shown above applies.