CDNL · Cardinal Infrastructure Group
Conviction · Low · more likely to lag the S&P 500 over the next three months
Wrong if: a daily close above $15.23
Note written ·
Price against the kill line
57.6% clear of its kill line on the 13 November 2026 close.
How to read this
This note expects the shares to lag the market, so its kill line sits above the price: a close above the red mark would prove the view wrong. Prices run from low on the left to high on the right. The dot is where the stock closed on 13 November 2026, left of the mark while it is below the line; a dot right of the mark has closed through it.
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 above $15.23, set on 12 November 2026. The shares are down 83.5% 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 above $15.23, the 9 November 2026 close and the highest of the week before the 12 November 2026 report, which would show the post-report fall recovered and the shares leading. A fourth-quarter adjusted EBITDA margin above the second quarter's 12.4% would also prove this call wrong.
Research onlyNot in the portfolio.
The business · as of
Cardinal Infrastructure Group is a Southeast US civil contractor. It does site-development, utility and paving work for residential, commercial and industrial projects and is paid under project contracts. Revenue was $202 million in the quarter to 30 September 2026 (10-Q filed 12 November 2026).
What is changing, and what follows · as of
- What is changing now
- On 12 November 2026 the company reported a 4.2% third-quarter adjusted EBITDA margin, withdrew its 2026 guidance of $880–900 million in revenue, postponed the Hughes Brothers acquisition and announced that its CFO is leaving.
- What follows for the company
- Project estimate revisions cut third-quarter gross profit by $13.2 million and gross margin fell to 5.4%. Nine-month free cash flow was minus $11.3 million, and the board approved a $50 million buyback.
- What follows for its customers, suppliers and competitors
- Hughes Brothers Construction, a private company, has had no closing date for its $357.5 million sale since 12 November 2026. The lower bid margins Cardinal cited on commercial and industrial work show price competition for that work.
What the price assumes · as of
At the 13 November 2026 close (filed inputs to 12 November 2026) the Class A shares trade at 20.0 times earnings and 0.5 times book value, for a market value of $133 million. The free-cash-flow yield is −8.9%, and no enterprise value is available. Those multiples hold only if gross margin climbs back from 5.4% toward the 15.9% of the June quarter and free cash flow turns positive.
Key figures from the filings · Industrials
Quarter to 30 September 2026, filed 12 November 2026; valuation at the 13 November 2026 close
- Revenue, latest quarter ($M)
- 202
- Revenue, change on a year (%)
- +65.1
- Gross margin (%)
- 5.4
- Operating margin (%)
- −4.4
- Free cash flow, four quarters ($M)
- −11.8
- Price to earnings (×)
- 20.0
- Free-cash-flow yield (%)
- −8.9
All filed numbers
What Cardinal Infrastructure Group reports to the SEC in its quarterly and annual filings. Each group states its period and filing date once; a figure dated otherwise says so. Built from the filings known on .
| Quarter to | Revenue ($M) | On a year (%) | Gross margin (%) | Operating margin (%) |
|---|---|---|---|---|
| first filed | 202 | +65.1 | 5.4 | −4.4 |
| first filed | 227 | +113.9 | 15.9 | 6.8 |
| first filed | 168 | +104.8 | 20.4 | 8.8 |
| first filed | 146 | — | — | 6.0 |
| first filed | 122 | — | 15.9 | 9.8 |
| first filed | 106 | — | 21.3 | 11.1 |
| Pre-tax income ($M) | −11.6 |
| Net income ($M) four quarters: 6.6 | −4.4 |
| Diluted shares, change on a year (%) | Not available |
| Operating cash flow ($M) | 41.9 |
| Capital spending ($M) | 53.7 |
| Free cash flow ($M) | −11.8 |
| Cash and short-term investments ($M) | Not reported |
| Debt ($M) long-term debt | 199 |
| Net cash, cash less debt ($M) | Not available |
| Deferred revenue ($M) | 15.7 |
| Backlog, orders not yet delivered ($M) | 618 |
| Receivables ($M) | 125 |
| Inventory ($M) | Not reported |
| Shareholders' equity ($M) | 262 |
| Market value ($M) | 133 |
| Enterprise value, market value plus net debt ($M) | Not available |
| Enterprise value to sales (×) | Not available |
| Enterprise value to operating income (×) | Not available |
| Price to earnings (×) | 20.0 |
| Price to book value (×) | 0.5 |
| Free-cash-flow yield (%) | −8.9 |
Short interest (FINRA, settled 15 October 2026, published 26 October 2026): 13.2% of shares outstanding sold short, 2.2 days of average trading to cover, +5.2% since the previous report.
| Window | Bought | Sold |
|---|---|---|
| 90 daysfrom | $0 | $0 |
| 12 monthsfrom | $10.7M | $0 |
The thesis
Cardinal Infrastructure Group's shares are more likely to lag the S&P 500 over the next three months. On 12 November 2026 the company reported a 4.2% third-quarter adjusted EBITDA (earnings before interest, taxes, depreciation and amortization) margin and withdrew its 2026 guidance. In the same week its finance chief gave notice. The fourth-quarter report, expected around March 2027, decides whether project losses have stopped and margins are recovering.
The quarter missed on both revenue and profit. Revenue rose 65.1% from a year earlier to $201.9 million, short of the $234.8 million analysts expected (Benzinga, 12 November 2026). Adjusted EBITDA fell to $8.5 million from $21.4 million. The total net loss was $11.0 million, and the loss attributable to Class A holders was $4.4 million, or $0.21 a share (company release, 12 November 2026).
The company withdrew its 2026 guidance of $880–900 million in revenue and a 16–18% adjusted EBITDA margin. It said only that fourth-quarter adjusted EBITDA should improve on the third quarter. On 13 November 2026 Truist kept its Buy rating but cut its target to $10 from $30 (Benzinga). The call is for a lag because the company has no outlook to be held to, its CFO search is still open, and the next hard numbers come with a report months away.
Bullish and bearish views on Cardinal Infrastructure Group Inc.
The bull case on Cardinal Infrastructure Group Inc. (CDNL), in brief: cash well exceeds debt. The bear case: margins fell on three fronts at once.
Bull case
- Cash well exceeds debt. On 30 September 2026 the company held $335.0 million of cash against $198.5 million of debt. It also had $100.0 million undrawn on its revolving credit line and $250.0 million on a delayed-draw term loan (company release, 12 November 2026).
- The largest cash commitment is on hold. On 12 November 2026 the company postponed the $357.5 million Hughes Brothers acquisition to concentrate on its existing operations. It has given no new closing date.
- A buyback is authorized. The board approved repurchases of up to $50 million of Class A stock over 12 months on 12 November 2026. A common market view is that a buyback at 0.5 times book value, the filed multiple at the 13 November 2026 close, supports the share price.
- Management calls the main problem temporary. Project estimate revisions cut third-quarter gross profit by $13.2 million and explain about 6.5 points of the margin decline. Management expects most of the troubled projects to finish in the fourth quarter or early in the first quarter of 2027 (earnings call, 12 November 2026).
- Backlog is still larger than a year ago. Backlog was $815.5 million on 30 September 2026, up 26.2% from a year earlier, mainly because of the A.L. Grading Contractors (ALGC) acquisition (company release, 12 November 2026).
- Truist still rates the stock a Buy. Truist kept its Buy rating on 13 November 2026 while cutting its target to $10 from $30 (Benzinga).
Bear case
- Margins fell on three fronts at once. In the company's bridge, about 6.5 points of the drop in adjusted EBITDA margin came from estimate revisions. About 3.6 points came from residential pricing pressure and lower initial bid margins on commercial and industrial work, and about 3.5 points from higher fuel and transportation costs. Gross margin was 5.4% in the quarter to 30 September 2026, against 15.9% a year earlier (10-Q, filed 12 November 2026).
- There is no guidance to measure against. The company gave no fourth-quarter revenue or margin figure and no 2027 outlook on 12 November 2026. It had already lowered its margin target at the second-quarter report on 11 August 2026.
- Organic growth has slowed. Of the $79.6 million rise in third-quarter revenue from a year earlier, $23.9 million was organic and $55.7 million came from acquisitions (company release, 12 November 2026).
- Backlog shrank from mid-year. Backlog was $815.5 million on 30 September 2026, down from $866 million at the second-quarter report (company releases, 11 August 2026 and 12 November 2026).
- The finance chief is leaving. CFO Mike Rowe gave notice on 9 November 2026 and stays until a successor is named. Spencer Stuart is running the search (company announcement, 12 November 2026).
- Analysts have cut their views. William Blair downgraded the stock to Market Perform from Outperform on 12 November 2026 and removed its price target, citing margin pressure and the CFO's departure (GuruFocus, MarketBeat). Truist's target fell to $10 from $30 a day later (Benzinga, 13 November 2026).
- Legal questions remain open. Securities-law firms including Bleichmar Fonti & Auld, Hagens Berman, Robbins Geller, Block & Leviton and Scott+Scott announced investigations between August and October 2026. Bleichmar Fonti & Auld's investigation concerns statements about the ALGC acquisition's performance.
- Cash generation is negative. Operating cash flow for the nine months to 30 September 2026 was $30.3 million against $41.6 million of capital spending, leaving free cash flow of minus $11.3 million (company release, 12 November 2026). Allied Paving, paid partly in cash, closed on 1 October 2026, after that balance-sheet date.
Price setup
The shares closed at $5.64 on 12 November 2026, their lowest close in 52 weeks, after closing at $14.99 on 11 November 2026. They closed at $6.46 on 13 November 2026, 93.3% below the intraday 52-week high of $96.40 set on 1 July 2026. The three-month change is −83.5%, measured from a $39.23 close on 17 August 2026. The stock listed on Nasdaq on 10 December 2025 at $23 a share, so its price history begins on that date.
As of the 13 November 2026 close, the 50-day moving average of adjusted closes is $22.58 and the 200-day is $42.97. The shares trade far below both, and the whole range the shares held in the week before the report sits more than twice above the last close.
The fourth-quarter numbers are the evidence that moves the case.
Insiders bought at much higher prices. SEC Form 4 filings show open-market purchases on 14 August 2026 and 17 August 2026 by the CEO (83,350 shares at an average of $38.41), the COO (25,700 shares at an average of $39.48), the CFO (7,000 shares at $36.53) and four directors, all at prices between $36.53 and $39.77. No Form 4 filed after the 12 November 2026 fall shows an insider purchase.
Catalysts ahead
- ~15 March 2027 (est.): Fourth-quarter and full-year 2026 report; the company has not announced the date. This is the first report since the guidance withdrawal. It shows whether project estimate revisions stopped, whether adjusted EBITDA recovered from the 4.2% third-quarter margin, and how much of the $50 million buyback was used.
What would change the view
A daily close above $15.23, the 9 November 2026 close and the highest of the week before the 12 November 2026 report, which would show the post-report fall recovered and the shares leading. A fourth-quarter adjusted EBITDA margin above the second quarter's 12.4% would also prove this call wrong.
What it trades with
Cardinal is a Southeast US civil contractor. Its site-development, utility and paving work follows regional housing and commercial construction, and the third-quarter margin bridge ties it directly to residential pricing and fuel costs. Even so, the shares move mainly on company execution. On 12 November 2026 company results set the move: a 4.2% adjusted EBITDA margin against 17.5% a year earlier.
Stock-specific moves of this size are common in the current market. The spread of 63-session returns across liquid US stocks, measured as a standard deviation, was 27% in 2026 against 15% in 2017. Until the fourth-quarter report shows whether the project write-downs have ended, links to construction-sector data are likely to stay weak. Results from listed site and paving contractors would only change that if Cardinal's own margins start tracking theirs.
The evidence, claim by claim (8)
- Third-quarter 2026 revenue was $201.9 million, up 65.1% from a year earlier. Of the $79.6 million increase, $23.9 million was organic and $55.7 million came from acquisitions. Third-quarter 2026 results release · as of
- Third-quarter adjusted EBITDA was $8.5 million, a 4.2% margin, against $21.4 million at 17.5% a year earlier. The net loss was $11.0 million, of which $4.4 million, or $0.21 a share, was attributable to Class A holders. Third-quarter 2026 results release · as of
- The company withdrew its 2026 guidance of $880–900 million in revenue and a 16–18% adjusted EBITDA margin. It expects fourth-quarter adjusted EBITDA to improve on the third quarter but gave no figure. Third-quarter 2026 results release · as of
- Backlog was $815.5 million at 30 September 2026, up 26.2% from a year earlier, mainly from the ALGC acquisition. Backlog had been $866 million at the second-quarter report. Second- and third-quarter 2026 results releases · as of
- At 30 September 2026 the company held $335.0 million of cash against $198.5 million of debt, with $100.0 million undrawn on its revolver and $250.0 million on a delayed-draw term loan. Nine-month free cash flow was minus $11.3 million. Third-quarter 2026 results release · as of
- The company postponed the Hughes Brothers acquisition and authorized up to $50 million of Class A buybacks over 12 months. CFO Mike Rowe will resign once a successor is named. Third-quarter 2026 results release and company announcement · as of
- Truist kept its Buy rating and cut its price target to $10 from $30. William Blair downgraded the stock to Market Perform on 12 November 2026 and removed its target. Benzinga 13 November 2026; GuruFocus and MarketBeat 12 November 2026 · as of
- The CEO, COO, CFO and four directors made open-market purchases at prices between $36.53 and $39.77 on 14 August 2026 and 17 August 2026. SEC Form 4 filings · as of
Sources
- Cardinal Infrastructure Group Inc. Reports Third Quarter 2026 Results · finance.yahoo.com ·
- Earnings call transcript: Cardinal Infrastructure Group Q3 2026 misses badly · investing.com
- William Blair Downgrades Cardinal Infrastructure (CDNL) Amid Margin Pressures and CFO Departure · gurufocus.com
- Cardinal Infrastructure Group (NASDAQ:CDNL) Rating Lowered to Market Perform at William Blair · marketbeat.com ·
- Cardinal Infrastructure Group Inc Reports Q3 2026 Loss of $0.21 per Share and Revenue of $201.9 Million, Missing Estimates · gurufocus.com
- All New Cases & Investigations · bfalaw.com
- Scott+Scott Attorneys at Law LLP Announces Investigation Into Cardinal Infrastructure Group Inc. (CDNL) · newsfilecorp.com
- Cardinal Infrastructure Amends Agreement To Acquire Hughes Brothers Construction · rttnews.com
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