Joby Aviation heads into tonight's Q1 2026 results with short sellers adding positions and the borrow market tightening sharply — a setup that frames real tension around certification timelines and cash burn.
Short interest is running near a meaningful floor. At 9.6% of the free float, it has climbed roughly 3% over the past week and held stubbornly around the 86–88 million share range all month. The ORTEX short score has risen steadily to 68.7 — placing Joby in the bottom 6th percentile of its universe by that measure — and availability has tightened to its highest since last year, with utilization now near 65%, approaching the 52-week peak of 68%. Borrowing costs have risen 10% in the past week to roughly 0.70% APR. None of that signals an imminent squeeze, but the directionality is clear: more shorts are piling in, and the lending pool is getting thinner. The put/call ratio, at 0.36, is slightly above its 20-day average of 0.33 but well off the 52-week high of 0.64 — options traders are not yet panicked, though positioning has drifted more cautious into the print. The stock closed at $8.68, down 2% on the day and off 3% over the week, and is now down roughly 33% year-to-date.
The analyst community captures the core debate precisely. Needham reiterated its Buy rating and $18 target as recently as April 28, pointing to the Uber partnership and software stack as differentiated assets in a nascent market. Goldman Sachs, which initiated in December 2025 with a Sell and a $10 target, and JPMorgan, which maintains Underweight with a $7 target (cut from $8 after the February print), anchor the bear camp. The bear thesis is straightforward: revenue is estimated at just $112 million against a net loss of roughly $827 million; the EV/Revenue multiple is a stratospheric 73x; and the path to commercialisation depends entirely on FAA certification that remains on an uncertain timeline. Bulls point to the $1.3 billion in net cash, strategic ownership by Toyota (13.1%) and Delta Air Lines (1.1%), and the argument that the eVTOL addressable market justifies a long runway of losses.
Ownership tells its own story. Toyota has held its 128 million share stake flat since December. CEO JoeBen Bevirt sold roughly $4.2 million worth of stock on April 15 at $9.03 — the largest single insider transaction in the recent data — with the CFO and Chief Legal Officer also trimming small positions in the same fortnight. Insider selling around earnings is not unusual for pre-revenue companies with equity-heavy compensation, but the cluster of sales from multiple senior executives in the three weeks before the print adds a note of caution to an already sceptical market.
The print is less about revenue — where expectations are minimal — and more about whether Joby can show progress on FAA Part 135 Air Carrier certification, any update on Toyota's manufacturing partnership, and whether the cash runway guidance holds against a burn rate running above $600 million a year in operating cash outflow.
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