BETA Technologies, a South Burlington, Vermont builder of piloted electric aircraft, booked revenue of $14.7m in the second quarter — and some of its best customers are the companies trying to beat it to market. It supplies motors to Eve Holding, flight control computers to the Canadian developer Horizon Aircraft, and charging hardware to operators who have not yet chosen an airframe. Management expects 40-60% gross margins on that component line. Revenue rose 146% from a year earlier, gross margin recovered to 54.7% from -3.1% in the first quarter, and full-year guidance went to $42-50m from $39-43m.

That is the entire delivered top line of the American electric-aircraft business right now, and it belongs to the one company that decided to arm its rivals.

The month was three days, and it was about defense

Archer Aviation, BETA and Eve Holding rose an average of 22% over the month to 19 August. The obvious reading — that air taxis are being repriced — does not survive the comparison. Joby Aviation, the closest peer and the only one of the four with a nine-figure revenue guide, rose 3.3%. Kratos Defense & Security Solutions, which builds jet-powered target and attack drones, rose 31.8%. Red Cat, a maker of small military reconnaissance drones, rose 27.4%. Buyers wanted autonomy and defense exposure; the eVTOL leader was left out.

The gains were also concentrated. Three of Archer's sessions compound to +35.9%, more than its entire +21.5% month, while the other nineteen sessions net roughly -10%. Eve's single best day, 4 August at +19.2%, exceeded its whole 10.3% gain, and the shares have since round-tripped from $2.89 to $2.67. That 4 August session was not eVTOL news at all: the Nasdaq rose nearly 3% and small caps hit their first new highs since 2021 after the Federal Reserve held rates steady.

Archer bought its next act with stock

Archer, of Palo Alto, is developing the four-passenger Midnight aircraft and has yet to sell a seat. Second-quarter revenue was $5.0m; the operating loss widened 58.5% year on year to $279.2m. The share count is the story: 397.5m diluted shares a year ago, 781.7m now. On 9 August the company agreed to acquire Boeing's Wisk Aero, Insitu and SkyGrid units, paying in stock worth about 19.75% of the company plus warrants over a further $200m.

It buys something real. Insitu is profitable on more than $200m of annual revenue and has built over 4,000 unmanned aircraft. It is also not in consensus, has not closed, and is subject to antitrust review. Archer holds $1.6bn of liquidity against an adjusted EBITDA loss of $177m in the quarter, so the runway is bought — with equity. On certification, Archer says it is the only manufacturer in the fourth and final FAA stage with fully accepted means of compliance, while Joby has flown a conforming aircraft for Type Inspection Authorization, the step that puts FAA pilots in the cockpit. Archer's near-term cash is coming from Abu Dhabi, where it has begun receiving payments under a launch programme and is targeting a restricted UAE type certificate ahead of full FAA approval.

Eve's backlog is mostly a wish list

Eve Holding, based in Melbourne, Florida, with 198 employees, is less a standalone company than an Embraer programme with a listing. It has never reported revenue; the second-quarter operating loss was $37.2m. Its headline order book of about 2,700 aircraft, valued near $13.5bn at list prices, rests on non-binding letters of intent — only 100 units, from Revo and AirX, are firm. The engineering prototype has flown 66 times for 2 hours 46 minutes in total and needs 30 to 40 more flights before full wing-borne transition. Cash of $403m and $531m of liquidity are guided to last "through 2028" — the same year service is meant to begin. Consensus revenue for 2026 has been cut to $222k.

Why revenue exists before a certificate

The mechanism is the eVTOL Integration Pilot Program: under a June 2025 executive order, the Department of Transportation and the FAA selected eight projects across 26 states on 9 March 2026, letting uncertified aircraft fly paying missions. BETA flew the first such flight on 12 July, moving a transplant organ for United Therapeutics between Maryland and Virginia — commercial operations pulled forward more than a year against the certification clock.

What the prices already assume

Because gross margins differ wildly across the three, price-to-gross-profit is the honest lens for BETA: 282x trailing against 270x forward — essentially no compression, since 2026 revenue steps only from roughly $36m to $47m, and consensus does not show a profitable year until 2030. Archer trades at 710x trailing and 322x forward sales on $15.2m of 2026 consensus revenue. Eve has no sales to divide into, leaving book value: 41.1x, against 2.66x at Archer and 3.79x at BETA.

The setup

Where it stands — One of the three sells something today; all three carry multiples that assume certification arrives on schedule. Would confirm — BETA delivers within its raised $42-50m guidance and holds gross margin above 50% in the third quarter. Would invalidate — Archer's Boeing acquisition fails antitrust review or slips past year end, removing the revenue it prices. Watch next — Eve's third-quarter report, and whether the prototype logs the 30-40 flights to full transition. Valuation — BETA 282x trailing, 270x forward gross profit; Archer 710x/322x sales; Eve 41.1x book versus Archer's 2.66x.