AMKR Stock Surges 28% With A 5-day Winning Spree On JP Morgan $65 Upgrade
Amkor Technology (AMKR) – a provider of semiconductor packaging, testing, and flip chip-scale products. – hit a 5-day winning streak, with cumulative gains over this period amounting to 28%. The company’s market cap has surged by about $3.0 Bil over the last 5 days and currently stands at $14 Bil.
The stock has YTD (year-to-date) return of 42.3% compared to 1.4% for S&P 500. This calls for a re-evaluation of the stock’s valuation to find out whether this is an opportunity or a trap.
What Triggered The Rally?
[1] JPMorgan Upgrade & Price Target Hike
- Rating Upgraded to Overweight
- Price Target More Than Doubled to $65
- Impact: Stock Hit New 52-Week High, Sharp Price Increase
[2] Q4 2025 Earnings & Revenue Beat
- EPS of $0.69 vs $0.44 Estimate
- Projected >20% Computing Growth for 2026
- Impact: Bullish Investor Sentiment, Positive Forward Guidance
Opportunity or Trap?
Below is our take on valuation.
There are a few things to fear in AMKR stock given its overall Weak operating performance and financial condition. But keeping in mind its Very High valuation, we think that the stock is Very Unattractive (For details, see Buy or Sell AMKR).
But here is the real interesting point.
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Returns vs S&P 500
The following table summarizes the return for AMKR stock vs. the S&P 500 index over different periods, including the current streak:
| Return Period | AMKR | S&P 500 |
|---|---|---|
| 1D | 5.1% | -0.0% |
| 5D (Current Streak) | 28.0% | 0.9% |
| 1M (21D) | 8.9% | -0.5% |
| 3M (63D) | 59.9% | 1.6% |
| YTD 2026 | 42.3% | 1.4% |
| 2025 | 55.9% | 16.4% |
| 2024 | -20.8% | 23.3% |
| 2023 | 40.3% | 24.2% |
However, big gains can follow sharp reversals – but how has AMKR behaved after prior drops? See AMKR Dip Buyer Analysis to learn more.
Gains and Losses Streaks: S&P 500 Constituents
There are currently 101 S&P constituents with 3 days or more of consecutive gains and 52 constituents with 3 days or more of consecutive losses.
| Consecutive Days | # of Gainers | # of Losers |
|---|---|---|
| 3D | 23 | 40 |
| 4D | 56 | 5 |
| 5D | 9 | 3 |
| 6D | 3 | 1 |
| 7D or more | 10 | 3 |
| Total >=3 D | 101 | 52 |
Key Financials for Amkor Technology (AMKR)
Last 2 Fiscal Years:
| Metric | FY2023 | FY2024 |
|---|---|---|
| Revenues | $6.5 Bil | $6.3 Bil |
| Operating Income | $470.3 Mil | $438.5 Mil |
| Net Income | $359.8 Mil | $354.0 Mil |
Last 2 Fiscal Quarters:
| Metric | 2025 FQ2 | 2025 FQ3 |
|---|---|---|
| Revenues | $1.5 Bil | $2.0 Bil |
| Operating Income | $92.0 Mil | $158.9 Mil |
| Net Income | $54.4 Mil | $126.6 Mil |
While AMKR stock looks attractive given its winning streak, investing in a single stock without detailed, thorough analysis can be risky. The Trefis High Quality (HQ) Portfolio, with a collection of 30 stocks, has a track record of comfortably outperforming its benchmark that includes all 3 — the S&P 500, S&P mid-cap, and Russell 2000 indices. Why is that? As a group, HQ Portfolio stocks provided better returns with less risk versus the benchmark index; less of a roller-coaster ride, as evident in HQ Portfolio performance metrics.