Joby Aviation Inc (NYSE:JOBY) shares are trading lower Tuesday afternoon as traders fade some of the recent partnership-driven optimism and the tape stays risk-off. Here’s what investors need to know.
- Joby Aviation shares are retreating from recent levels. Why are JOBY shares down?
What Is Driving Joby Aviation’s Partnership with Toyota?
The latest buzz centers on Joby and Toyota Motor formalizing a mass-manufacturing alliance via a new joint venture, Joby Toyota Aero Manufacturing Preparation Company, aimed at scaling commercial production of Joby’s electric air taxi. Toyota holds 51% after purchasing 1.02 million shares for $1.02 million, while Joby holds 49% after acquiring 980,000 shares for $980,000, building on Toyota’s $500 million investment in late 2024.
Short positioning is also part of the setup: short interest recently rose to 100.74 million shares from 88.95 million, or about 15.36% of publicly available shares sold short. At roughly 30.62 million shares of average daily volume, that’s about 3.29 days to cover—fuel for sharp squeezes on good news, but also a sign traders are leaning against the story.
Critical Levels to Watch for JOBY Stock
From a longer-term trend view, JOBY is still in repair mode: at $8.06 it’s trading 11.6% below its 20-day SMA ($9.15) and 33.9% below its 200-day SMA ($12.23), which keeps the bigger-picture bias tilted lower. The moving-average stack is also bearish, with the 20-day SMA below the 50-day SMA and the death cross that triggered in February (50-day SMA below the 200-day SMA) still acting as an overhang for trend followers.
For momentum, MACD is the cleaner read right now: it’s below its signal line with a negative histogram, which points to upside pressure fading unless buyers can reclaim that baseline. In plain English, MACD versus its signal line helps gauge whether momentum is strengthening or weakening, and this setup says the recent push is losing steam.
- Key Support: $8.00 — a nearby level where buyers previously stepped in, sitting close to the lower end of the 52-week range ($7.75 low)

What Is Joby Aviation’s Business Model?
Joby Aviation Inc is developing an all-electric, vertical take-off and landing (eVTOL) air taxi for commercial passenger service, aiming to run its own services and also sell aircraft to partners. Its aircraft is designed to carry a pilot plus up to four passengers (or an expected payload up to 1,000 pounds) at speeds up to 200 mph, targeting routes up to 100 miles on a single charge.
That’s why the Toyota manufacturing alliance is such a big deal for the story: certification is only part of the challenge, and scaling production is where many advanced mobility concepts get stuck. Joby’s revenue today is tied to passenger revenue from transportation services (including helicopter or fixed-wing operations), so investors are watching for signs the company can bridge from development into repeatable commercial operations.
JOBY Stock Price Movement on Tuesday
JOBY Stock Price Activity: Joby Aviation shares were down 8.41% at $8.17 at the time of publication on Tuesday, according to Benzinga Pro data.
Image: Shutterstock
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