Watching
IMOS · ChipMOS TECHNOLOGIES INC.
Updated ·
Against its published line
Above its line on the last close.
How to read this
The red mark is the published kill line — the price that would prove the thesis wrong. The dot is where the name closed on 9 October 2026; a dot left of the mark has closed through its line.
Distance is drawn on a square-root scale, so close calls get the room. Past 8% a row reads well clear, with a hollow dot to show the figure is off the drawn scale. Rows run tightest first.
Kill line
A daily close below $72, under the 1 October 2026 close of $72.68, which would erase the whole 2 October 2026 jump. Third-quarter 2026 gross margin at or below the second quarter's 18.0% would confirm the break.
Last pick Medium conviction, to : +6.5% against the S&P 500's +1.4%. Beat the S&P 500 · conviction cut below medium.
How picks are graded →The thesis
ChipMOS's third quarter of 2026 set a revenue record, but sales flattened inside the quarter, and the US shares already price in more growth than the monthly figures show. The third-quarter results, expected around 10 November 2026, settle it: they show whether gross margin rose above the second quarter's 18.0% on the higher revenue.
The company's 8 October 2026 release put third-quarter revenue at NT$8,400.8 million (US$263.8 million), up 13.8% from the second quarter and 36.7% from a year earlier. September revenue was NT$2,792.0 million, up 0.2% from August and 33.8% from September 2025. That ended the August decline but did not restore growth: August had fallen 1.3% from July.
The shares closed at $75.50 on 8 October 2026, 9.4% below the record $83.30 close of 2 October 2026 and below the $78.39 close of 6 October 2026. The narrative is maturing: the 2 October 2026 record came without a company release, and the record quarter reported on 8 October 2026 did not lift the close back toward that high.
ChipMOS's AI exposure is indirect. It assembles and tests commodity DRAM, NAND flash and display-driver chips, and does no high-bandwidth-memory packaging. The company said on 8 October 2026 that growth came from "sustained AI-related demand outpacing available memory supply."
Bullish and bearish views on ChipMOS TECHNOLOGIES INC.
The bull case on ChipMOS TECHNOLOGIES INC. (IMOS), in brief: The quarter was a record. The bear case: Sales flattened through the quarter.
Bull case
- The quarter was a record. Third-quarter 2026 revenue of NT$8,400.8 million rose 13.8% from the second quarter and 36.7% year over year, per the company's 8 October 2026 Form 6-K. September grew 33.8% year over year.
- Memory is driving the growth. On the 11 August 2026 earnings call, management said second-quarter memory revenue rose more than 46% year over year and DRAM revenue more than 70%. It expected "more significant third-quarter growth" in DRAM, citing DDR4 demand and the DDR5 ramp.
- Profitability followed revenue. Second-quarter gross margin was 18.0%, against 13.8% in the first quarter and 6.6% a year earlier, per the 11 August 2026 results. Net profit was NT$891.7 million (US$0.80 per American depositary share, or ADS), against a NT$533.1 million loss a year earlier.
- Pricing power has appeared. The chairman said on the 11 August 2026 call that ChipMOS selectively raised memory assembly-and-test prices in the second quarter to cover higher material costs.
- New capacity has committed demand. The 8 October 2026 release said new capacity is being deployed against existing customer forecasts and long-term supply agreements, as supply constraints persist across most memory and storage end markets.
Bear case
- Sales flattened through the quarter. August revenue fell 1.3% from July and September rose only 0.2% from August, per the 10 September 2026 and 8 October 2026 releases. The third-quarter gain over the second quarter came from the level reached by July, not from rising monthly sales after it.
- The price ran ahead of the averages. MarketBeat put the 50-day moving average at $57.26 and the 200-day at $54.96 on 2 October 2026, far below the $75.50 close of 8 October 2026. The 14-day relative strength index (RSI) was 67.2 at that close, just under the 70 level usually read as overbought.
- Trading drew an exchange disclosure. On 29 September 2026 ChipMOS filed a 6-K after its Taiwan-listed shares reached the Taiwan Stock Exchange's disclosure threshold for unusual trading. That marks heavy attention before the 2 October 2026 jump.
- Valuation sits above fair-value estimates. GuruFocus put its GF Value estimate at $36.09 on 5 October 2026 and rated the shares overvalued.
- Capital spending is elevated. Management projected 2026 capital spending above 25% of revenue on the 11 August 2026 call, against a long-term target below 20%. Rising depreciation would weigh on margin if utilization, 72% in the second quarter, does not climb.
Price setup
Adjusted daily closes show $72.68 on 1 October 2026, the record $83.30 on 2 October 2026, $77.41 on 5 October 2026, $78.39 on 6 October 2026 and $75.50 on 8 October 2026. The shares gained 9.2% over three months to 8 October 2026.
The $72.68 close of 1 October 2026 is the level that matters below. A close under it would erase the whole 2 October 2026 jump and put the shares back under the former $75.78 high. Above, the $83.30 record close of 2 October 2026 is the reference high.
The cluster gives no lift. The semiconductor foundry and equipment group, which includes Cohu, Veeco and TSMC, has been maturing since late September after three weeks of saturation in September. A cooling group raises the bar for a single name trading this far above its averages.
Catalysts, next 30 days
- ~10 November 2026, est.: third-quarter 2026 results and October revenue. The date is estimated from prior years and unconfirmed by the company. These show whether gross margin rises above the second quarter's 18.0%, whether utilization rises from 72%, and whether October revenue moves above September's NT$2,792.0 million.
Elapsed catalysts
- No company-scheduled release inside 30 days. ChipMOS typically announces its results-call date in late October; the third-quarter 2025 call was held on 11 November 2025. (passed 335d ago)
What would change the view
The case breaks if third-quarter gross margin comes in at or below the second quarter's 18.0% despite revenue rising 13.8%. That would show higher volumes are not converting into profit, with capital spending above 25% of revenue adding depreciation.
On price, a daily close below $72 would put the shares under the 1 October 2026 close of $72.68 and erase the 2 October 2026 jump. October revenue below September's NT$2,792.0 million would make a third flat-to-down month and confirm that sales have stalled.
The read improves if third-quarter gross margin clears 18.0% and October revenue resumes month-on-month growth. A new close above the $83.30 record backed by those figures would show business results catching up with the price.
What it trades with
ChipMOS trades with the memory cycle. Its results track DRAM and NAND output and pricing; TrendForce projects fourth-quarter 2026 conventional DRAM contract prices to rise 10–15% quarter over quarter, a slower pace than earlier in 2026.
The US shares and the Taiwan-listed shares (8150) move together, but the Taiwan listing carries a 10% daily limit and the US shares do not. Results are reported in Taiwan dollars; the 8 October 2026 release converted at NT$31.85 per US dollar, so currency moves shift US-dollar figures without any change in the business.
Notes
- ADR ratio is 1:20: each American depositary share represents 20 Taiwan common shares, so US per-share figures differ from NT$ earnings per common share.
- Foreign private issuer: files 6-K reports, not 10-Qs, and its insiders file no US Form 4s, so standard US insider-transaction data is unavailable.
- Monthly revenue is usually published between the 8th and 10th of the following month and is the only disclosure between quarterly results.
- AI exposure is indirect: commodity DRAM, NAND and display-driver assembly and test, with no high-bandwidth-memory packaging.
- Results are reported in Taiwan dollars; moves in the Taiwan dollar change US-dollar revenue and the US-dollar dividend without any change in the business.
- The common shares also trade on the Taiwan Stock Exchange as 8150, where a 10% daily price limit applies; the US shares have no such limit.
Related · shared themes
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AMAT
Applied Materials, Inc.
Applied Materials' chip-equipment recovery case holds as TSMC's September revenue rose 54.6% and Micron raises spending; the 13 October 2026 SEMICON West briefing, TSMC's 15 October 2026 results and the ~12 November 2026 report against a $10.25 billion guide settle it.
ASML
ASML Holding N.V.
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COHU
Cohu, Inc.
Cohu's AI-driven chip-test recovery has lifted the shares to $68.37, level with the $70.88 average analyst target; the Q3 report, expected about 29 October 2026, and the 10 November 2026 investor day show whether revenue and new targets justify that price.