Frontier Shorts Hold as Earnings Land Tomorrow

ULCC shares jumped 12.9% this week to $5.53, reversing last week's 12.2% decline almost entirely in a single move. That recovery came on the day earnings were reported, with tomorrow's event now confirmed on the calendar.

Short interest barely moved during the rally. At 10.7% of the free float, roughly 24.6 million shares, positions are effectively flat on the week, up about 1.9%. That's notable: the prior note flagged shorts rebuilding into a falling stock. This week, the stock bounced sharply and shorts did not cover. The ORTEX short score ticked up to 73.7, a fresh recent high and a further step above the mid-68 range it held through most of October. The 90-day net insider activity shows net selling of around 350,000 shares, though the transactions filed on October 25 were almost entirely compensation-related option exercises (transaction code M) paired with mandatory tax-withholding sales (code F). These are mechanical, not discretionary, and carry limited signal about conviction at current prices.

The options market remains the loudest voice in the dataset. Put/call ratio hit 2.50, the highest reading of the past 52 weeks, up from the 2.21 that was already flagged as a near-record in last week's note. Against a 20-day average of 1.74, that reading is roughly two standard deviations elevated. Defensive positioning in the options market has continued to build even as the stock climbed. Borrow costs rose sharply on the week, up 47% to 0.91%, though in absolute terms they remain cheap. Availability tightened from around 297% a week ago to 178% now, meaning roughly 36 million shares are still available to borrow against 24.6 million shorted. The lending pool has narrowed but is not constrained.

The Street is cautious and largely stationary on the name. The most recent analyst changes, from Susquehanna and UBS in early October, both cut targets to $6 while keeping Neutral ratings. The mean price target is $6.33 against a current price of $5.53, implying modest room. Barclays has maintained an Underweight with a $5 target since September. The analyst case against the stock centres on a pre-tax margin that ran at minus 7.5% in the most recent comparable period, leverage around 5x projected EBITDAR, and persistent earnings volatility. The case for it rests on efficiency gains from an all-Airbus single-aisle fleet, Florida route density, and a 40% year-over-year rise in co-brand loyalty revenue per passenger. The PE multiple has expanded about 11 points over the past 30 days to roughly 50x, reflecting the price recovery, while EV/EBITDA has edged higher to 5.8x.

Among peers, the week's move was broadly shared. JBLU gained 19% on the day alone. UAL rose 7.1% on the week and LUV added 9.6%. ULCC's 12.9% weekly gain was at the upper end of the group but not an outlier in a week when the sector moved broadly higher.

Alt data from the Bureau of Transportation Statistics shows T-100 passengers carried for Frontier rose for three consecutive months through July 2026, reaching 3.59 million in that period. No dataset in the alt data coverage has been measured to lead the company's reported financial figures, so the traffic trend is context rather than a forward indicator.

The data to watch now is the earnings release itself, logged for October 29, and whether shorts use any post-earnings move as an opportunity to reduce or extend a position that has barely shifted despite a 13% weekly swing.