PI · Impinj
Conviction · Medium · more likely to lead the S&P 500 over the next three months, by a modest margin
Wrong if: a daily close below $165.54
Note written ·
How this view changed
- · Rated Medium. Results, 28 October 2026: Impinj reported record Q3 2026 revenue of $112.1M against a $105.5–108.5M guide and guided Q4 revenue to $104–107M against a $98.3M consensus estimate.
Price against the kill line
1.8% clear of its kill line on the 13 November 2026 close.
How to read this
The red mark is the price level of the published kill line: a close through it (a weekly close, on a weekly line) would prove the research note wrong on price. The dot is where the stock closed on 13 November 2026; a dot left of the mark has closed through its line.
The scale is stretched near the line, so close calls are easy to see. More than 8% from the line, the stock reads well clear, with a hollow dot to show the figure is off the drawn scale.
The kill line is the research note's own test. The portfolio sells on business facts, not on a price. How the portfolio decides
Three months against the kill line
Daily closes, to . Red: the kill line, a daily close below $165.54, on record since 10 November 2026. The shares are down 1.8% since the close; the S&P 500 is down 2.1% over the same sessions. Figures in the note can cover a different window.
Kill line
A daily close below $165.54, the 21 August 2026 close that held through the autumn advance. Fourth-quarter revenue under the $104.0M guide floor or adjusted EBITDA under $19.2M would also break the case.
Research onlyNot in the portfolio.
Key figures from the filings · Technology
Quarter to 30 September 2026, filed 28 October 2026; valuation at the 13 November 2026 close
- Revenue, latest quarter ($M)
- 112
- Revenue, change on a year (%)
- +16.7
- Gross margin (%)
- 52.8
- Operating margin (%)
- 4.1
- Free cash flow, four quarters ($M)
- 65.6
- Net cash, cash less debt ($M)
- −73.3
- Enterprise value to sales (×)
- 13.6
- Free-cash-flow yield (%)
- 1.3
All filed numbers
What Impinj reports to the SEC in its quarterly and annual filings. Each group states its period and filing date once; a figure dated otherwise says so. Built from the filings known on .
| Quarter to | Revenue ($M) | On a year (%) | Gross margin (%) | Operating margin (%) |
|---|---|---|---|---|
| first filed | 112 | +16.7 | 52.8 | 4.1 |
| first filed | 108 | +10.7 | 58.6 | 9.7 |
| first filed | 74.2 | 0.0 | 49.1 | −20.4 |
| first filed | 92.8 | +1.4 | 51.8 | −2.9 |
| first filed | 96.1 | +0.9 | 50.3 | 0.7 |
| first filed | 97.9 | −4.5 | 57.8 | 11.1 |
| Pre-tax income ($M) | 4.7 |
| Net income ($M) four quarters: −9.5 | 4.7 |
| Diluted shares, change on a year (%) against the quarter to 30 September 2025 | +7.4 |
| Operating cash flow ($M) | 76.3 |
| Capital spending ($M) | 10.7 |
| Free cash flow ($M) | 65.6 |
| Cash and short-term investments ($M) | 113 |
| Debt ($M) long-term debt | 186 |
| Net cash, cash less debt ($M) | −73.3 |
| Deferred revenue ($M) −31.0% on a year | 1.9 |
| Backlog, orders not yet delivered ($M) | Not reported |
| Receivables ($M) | 78.1 |
| Inventory ($M) | 83.4 |
| Shareholders' equity ($M) | 302 |
| Market value ($M) | 5,201 |
| Enterprise value, market value plus net debt ($M) | 5,274 |
| Enterprise value to sales (×) | 13.6 |
| Enterprise value to operating income (×) | Not meaningful |
| Price to earnings (×) | Not meaningful |
| Price to book value (×) | 17.2 |
| Free-cash-flow yield (%) | 1.3 |
Short interest (FINRA, settled 15 October 2026, published 26 October 2026): 8.1% of shares outstanding sold short, 6.1 days of average trading to cover, −7.6% since the previous report.
| Window | Bought | Sold |
|---|---|---|
| 90 daysfrom | $0 | $18.8M |
| 12 monthsfrom | $0 | $168.5M |
The thesis
Impinj's radio-frequency identification (RFID) recovery held through the third-quarter report, with record revenue of $112.1 million and a fourth-quarter revenue guide above Wall Street's estimate. Profit margins are guided lower, so the next report, expected in late February 2027, decides whether earnings keep pace with sales.
Impinj reported on 28 October 2026 that third-quarter revenue rose about 17% year on year against a guide of $105.5–108.5 million and a $105.64 million consensus estimate. Non-GAAP earnings per share were $0.69 against $0.61 expected. The shares closed at $174.73 on 9 November 2026, 16.5% below the $209.16 52-week high.
The story is well known: the recovery is well known, and analysts raised targets within a week of the 28 October 2026 report, yet the shares have the post-report price of $190.76 that StockStory quoted right after the release.
Bullish and bearish views on Impinj, Inc.
The bull case on Impinj, Inc. (PI), in brief: third quarter beat the guide. The bear case: margins fell while revenue rose.
Bull case
- Third quarter beat the guide. Revenue of $112.1 million was a record and above the $105.5–108.5 million range guided on 29 July 2026. Adjusted EBITDA (earnings before interest, taxes, depreciation and amortization) was $24.5 million, above the $20.7–22.2 million guide (Impinj release, 28 October 2026).
- Fourth-quarter guide beats consensus. Impinj guided revenue of $104.0–107.0 million against a $98.297 million consensus estimate, and non-GAAP EPS of $0.55–0.60 against $0.48 (Benzinga, 28 October 2026).
- Chip demand set a new record. Endpoint integrated circuit revenue reached $97.3 million, up from $96.4 million in the second quarter (MarketBeat call summary, 28 October 2026). CEO Chris Diorio cited "resilient retail demand" in the release.
- Analyst targets moved up after the report. Jefferies raised its target to $220 (Buy), Susquehanna to $225 (Positive) and Needham to $195 (Buy) on 29 October 2026. Barclays raised its target to $217 with an Overweight rating on 2 November 2026.
- Product adoption continues. TSC launched its X40 mobile computer with Impinj's E Family reader chips on 3 November 2026.
Bear case
- Margins fell while revenue rose. Adjusted EBITDA of $24.5 million was a 21.9% margin, against $30.7 million and 28.3% in the second quarter. MarketBeat's call summary put gross margin at 54.9% against 60.9% in the prior quarter.
- Fourth-quarter guide is lower than the third quarter. Revenue of $104.0–107.0 million and adjusted EBITDA of $19.2–20.7 million both sit below the third-quarter results. Analysts described the outlook as a sequential dip, with endpoint chip revenue expected to ease slightly.
- The post-report gain faded. StockStory reported the shares up 7.8% to $190.76 after the 28 October 2026 release. The close on 9 November 2026 was $174.73, and the three-month change is −2.7%.
- Neutral voices remain. UBS raised its target only to $180 from $175 and kept a Neutral rating on 29 October 2026, a level close to the current price.
- Past reports moved the shares hard. The shares fell 22.1% in the February 2026 weak-guide session and 11.2% on 5 June 2026. Insiders have also sold under pre-set plans, including 8,892 CFO shares on 21 September 2026 (SEC Form 4 via MarketBeat).
Price setup
The last close was $174.73 on 9 November 2026, 16.5% below the $209.16 52-week high in the adjusted daily series. The 14-day relative strength index (RSI) read 48.2, a neutral level. The three-month price change was −2.7%.
The 21 August 2026 close of $165.54 is the nearest prior low that held through the autumn advance. The shares trade between that low and the post-report price near $190.76.
Crowding evidence is limited. No earnings date falls inside the next 30 days, analyst targets are mostly above the price, and the only observable supply is dated insider sales under Rule 10b5-1 plans.
Catalysts ahead
- ~25 February 2027 (est.): Q4 2026 results after the US close, with first-quarter 2027 outlook. Tests the $104.0–107.0M revenue guide and the $19.2–20.7M adjusted EBITDA guide, and whether margins stabilise after the third-quarter decline.
- 30 November 2026 (approx.): Form 4 insider filings under executive 10b5-1 plans, if any. Pre-scheduled sales by the CEO and CFO are dated, public and recurring; they add to supply but do not signal a change of view.
What would change the view
A daily close below $165.54, the 21 August 2026 close that held through the autumn advance. Fourth-quarter revenue under the $104.0M guide floor or adjusted EBITDA under $19.2M would also break the case.
The risks this note tracks, each with what would confirm it:
- Margins keep falling as revenue shifts toward lower-margin endpoint chips. Confirmed by: fourth-quarter adjusted EBITDA below the $19.2M guide floor, or non-GAAP gross margin below the 54.9% reported for Q3.
- Revenue steps down further after the record third quarter. Confirmed by: fourth-quarter revenue below the $104.0M guide floor, or management reporting another customer inventory correction.
- Reliance on one supply-chain custom-chip account leaves results exposed to that customer's ordering. Confirmed by: management citing a pause or digestion at the logistics customer, or endpoint IC revenue falling below the $97.3M record by more than the guided dip.
What it trades with
Impinj sells RFID chips and readers into retail apparel, general merchandise and supply-chain logistics, so results track retail inventory programs more than the broader semiconductor cycle. Customer concentration in one North American supply-chain account links its quarterly revenue to that customer's ordering. Convertible-note settlements have reduced debt: long-term debt was $185.3 million at 30 September 2026, plus a $1.0 million current portion (Impinj 8-K, 28 October 2026).
The evidence, claim by claim (7)
- Q3 2026 revenue was a record $112.1M, up about 17% year on year, against a $105.5–108.5M guide and a $105.64M consensus estimate; non-GAAP EPS $0.69 vs $0.61 expected. Impinj Q3 2026 results release (8-K); Benzinga 28 October 2026 · as of
- Q3 adjusted EBITDA was $24.5M (21.9% margin) against $30.7M in Q2; GAAP net income $4.7M, $0.15 per diluted share. Impinj Q3 2026 results release; MarketBeat call summary · as of
- Endpoint IC revenue set a record of $97.3M, against $96.4M in Q2 2026. MarketBeat Q3 call summary 28 October 2026; Impinj Q2 2026 release · as of
- Q4 2026 guidance: revenue $104.0–107.0M, adjusted EBITDA $19.2–20.7M, non-GAAP EPS $0.55–0.60, GAAP EPS $0.04–0.08; consensus was $98.297M revenue and $0.48 non-GAAP EPS. Impinj Q3 2026 results release (8-K); Benzinga 28 October 2026 · as of
- Cash and equivalents $38.7M, short-term investments $74.2M and long-term investments $115.3M at 30 September 2026; long-term debt $185.3M plus a $1.0M current portion. Impinj Q3 2026 results release (8-K) · as of
- After the report, Jefferies raised its target to $220 (Buy), Susquehanna to $225 (Positive), Needham to $195 (Buy) and UBS to $180 from $175 (Neutral); Barclays followed with $217 (Overweight) on 2 November 2026. Benzinga / analyst notes · as of
- Impinj shares closed at $174.73 on 9 November 2026, 16.5% below the $209.16 52-week high; RSI(14) 48.2; three-month change −2.7%. Split/dividend-adjusted daily closes · as of
Sources
- IMPINJ INC - Form 8-K - FY2026 · sec.gov
- MarketBeat ·
- Impinj (NASDAQ:PI) Q3: strong sales, stock soars · stockstory.org
- Last10K