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UMCUnited Microelectronics CorporaBuy Wait5.7·$21.43-3.86%
UMC · Why this verdict

Why United Microelectronics Corpora (UMC) is rated BUY WAIT

Updated

Model-generated analysis — not investment advice. Not a registered investment advisor. Past performance does not guarantee future results.

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Methodology · Editorial policy & full disclaimer

VerdictBUY WAIT
Overall score5.7/10
ConfidenceMEDIUM
MacroNEUTRAL
TrendMatrix Research · core thesis

Engine thesis — one sentence

United Microelectronics Corporation has beaten or met earnings estimates in 3 of the last 4 quarters with an average surprise of 28%, carries strong margins of 21% and a Piotroski score of 8 out of 9, but trades at essentially zero upside to resistance and negative asymmetry, leaving no room for a favorable entry at current prices.

Falsifiable statement — pillar-level invalidators below. Engine-derived; not personalized advice.

Thesis pillars

United Microelectronics generates 21% net margins and carries a Piotroski F-Score of 8 out of 9 — a strong balance sheet health indicator — and scores 6.2 on quality overall, reflecting a more financially sound foundry operation than the market sentiment score suggests.

Stable
Quality breakdown
Expectation
Net margins stay above 18% and Piotroski score remains at 7 or above for the next 4 reported periods

CounterROE and ROA scores are in the lower half of the semiconductor peer group, and a forward P/E of 28.3x is expensive for a foundry business with below-average peer rank on growth

UMC beat earnings estimates by 56% in April 2026 and 68% in October 2025, with an average positive surprise of 28% across reporting periods, indicating the company is systematically delivering results above what analysts model.

Stable
Earnings
Expectation
EPS surprise stays above 10% in at least 2 of the next 4 quarters, sustaining the outperformance pattern

CounterOne quarter (July 2025) was a miss of 11.4%, and high implied volatility of 132% suggests the market prices in significant earnings variability rather than predictable beats

UMC is trading at $23.08 with a resistance-based take-profit of $23.22 — only $0.14 above current price — creating negative asymmetry of -4.06 and leaving virtually no upside for a new position at current levels.

Stable
Targets
Expectation
Price pulls back below $20, more than 12% below the current $23.08, before any new entry creates a favorable risk-reward profile

CounterStrong OBV accumulation and position above the 200-day moving average suggest the stock has technical support; it could break above resistance and re-rate to higher analyst targets in the absence of an updated target

The stock is trading within 2.6% of its 52-week high with momentum at 5.5 and volume accumulation, suggesting the recent rally has been genuine and buyers remain interested, but also that the easy money from the current cycle may already have been made.

TrippedImproving
Bear case
Expectation
Price breaks above the 52-week high and makes a new high above $24, confirming continuation of the uptrend

CounterStocks near 52-week highs often encounter technical resistance and profit-taking; with negative asymmetry at the current price, the risk of mean-reversion is higher than the reward from a breakout

Per-dimension breakdown

Value

5.3/10data confidence 83%
ComponentSub-score
P/E3.8
P/S10.0
Fwd P/E4.8
PEG4.9
Analyst target3.0
  • Forward P/E: 26.1x
  • PEG: 1.61

Quality

6.2/10data confidence 100%
ComponentSub-score
ROE4.2
ROA3.2
Gross margin1.9
Op margin7.4
Net margin10.0
Current ratio9.2
FCF quality5.2
Moat6.2
Piotroski F8.9
  • Strong margins: 21%
  • Earnings quality warning: 69% FCF/NI
  • Strong Piotroski F-Score: 8/9

Growth

7.0/10data confidence 67%
ComponentSub-score
Rev growth3.9
EPS growth10.0

Momentum

3.4/10data confidence 100%
ComponentSub-score
RSI7.8
MACD0.0
OBV1.0
MA position4.0
Volume4.0
  • Uptrend pullback (RSI 37) - buy opportunity
  • Volume distribution (falling OBV)
  • Above 200-day MA

Sentiment

4.1/10data confidence 100%
ComponentSub-score
LLM sentiment5.0
Analyst rating5.0
Price target2.0
  • Below analyst target

Insider

6.3/10data confidence 75%
ComponentSub-score
materiality2.0
holder change10.0
notable moves7.0
  • Heavy insider selling — $294,291,000 (0.552% of mkt cap)
  • Institutions accumulating

Peer rank

5.4/10data confidence 80%
ComponentSub-score
value rank8.1
quality rank6.4
growth rank2.1

Technical

7.8/10data confidence 100%
ComponentSub-score
bollinger10.0
support resistance8.7
52w position4.9
gap7.5
  • Extreme gap down (-7.8%) - potential reversal

Risk (lower is worse)

6.6/10data confidence 100%
ComponentSub-score
short interest9.4
days to cover9.6
volatility0.0
beta4.8
debt equity9.3

Catalyst

6.7/10data confidence 100%
ComponentSub-score
erm6.5
earnings history5.6
earnings timing5.0
surprise avg10.0
dividend safety4.8
news activity8.0
  • Earnings in 10 days

How the verdict was assembled

Engine trigger

Maintain position. Not compelling to add more. | News modifier +1 (HOLD_IF_HOLDING → STRONG_BUY_WAIT).

Engine technical detail
verdict_path: L4:PATH_F_HOLD|L3:NEWS_MOD=+1|ENTRY_STICKY:PRIOR_STILL_VIABLE
Passed (4)
  • 8K:CLEAN
  • NEWS_EVENTS:NONE_RECENT
  • SEMI_CYCLE_PEAK:CLEAR
  • MATERIALS_CYCLE_PEAK:CLEAR
Failed (2)
  • MOMENTUM:3.4<4.5
  • ASYMMETRY:-2.3=NEGATIVE
Warning (2)
  • INSIDER:0.55%=MODERATE
  • EARNINGS_PROXIMITY:10d<=14d (soft)
Reward-to-Risk
-2.33
Upside
-35.0%
Downside
15.0%
Sizing output
STARTER

Setup No clear chart pattern; technical signals are mixed

EdgeNo clear edge No clear edge identified

SuitabilityAggressive Beta 1.57>1.3

Investment implication

None of the engine's positive-conviction paths (C-quality, D-momentum) triggered — the F-path HOLD reflects balanced signals. Strongest-cleared gate: 8K:CLEAN. Top dim: Technical at 7.8; weakest: Momentum at 3.4. No conviction either direction.

The strongest dimensions are Technical at 7.8, Growth at 7.0, and Catalyst at 6.7; the weakest are Momentum at 3.4, Sentiment at 4.1, and Value at 5.3. The V9 engine flagged 2 failed gates with 2 warnings, producing an asymmetric reward-to-risk of -2.33 and an engine sizing output of STARTER.

What would invalidate the thesis

Falsifying conditions — when triggered, the corresponding pillar's thesis is invalidated.

  • P1Strong Margins Piotroski Quality

    Trip ifNet margins fall below 15% or Piotroski F-Score drops below 6 for 2 consecutive quarters

  • P2Earnings Beats With Large Surprises

    Trip ifEPS surprise falls below 0% in at least 3 of the next 4 quarters

  • P3Price At Resistance Zero Upside

    Trip ifPrice rises above $25, more than 8% above current $23.08, without analyst target revision supporting the new level

  • P4Near 52 Week High MomentumTripped

    Trip ifPrice drops below $21.46 stop-loss level, more than 7% below current price

Engine reasoning is mechanically derived from pipeline gate outputs. See decision view.

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