Joby Aviation’s $640M Trading Surge Boosts It to 198th in Market Activity Rankings

On October 1, 2025, Joby Aviation (JOBY) recorded a trading volume of $640 million, marking a 34.27% increase from the previous day and ranking it 198th in market activity. The stock closed with a 0.50% gain, reflecting moderate investor interest amid broader market dynamics.

Recent developments highlight strategic partnerships and regulatory progress as key drivers for the electric air mobility company. Joby secured a conditional order for 500 air taxis from a major U.S. airline, pending final certification. This follows the FAA’s public comment period on Joby’s supplemental type certificate, signaling advancing regulatory clarity. The company also announced a 24-month extension of its manufacturing agreement with Textron, reinforcing production timelines ahead of its 2025 commercial launch.

Analyst activity intensified after a sell-side firm upgraded Joby to "Market Outperformer," citing improved unit economics and reduced capital expenditures. However, short-term volatility remains tied to macroeconomic indicators, with bond yields influencing risk appetite in growth-oriented sectors. No direct earnings reports or product milestones were disclosed in the latest period.

To ensure I set up the back-test exactly the way you have in mind, could you please confirm a few details? 1. Universe: Should I look only at U.S. common stocks (NYSE + NASDAQ) or a different market/universe? 2. Weighting: Do you want an equal-weight position in each of the 500 tickers selected each day? 3. Rebalancing: The plan is to (a) rank by that day’s volume, (b) buy an equal-weight basket of the top 500 at the close, and (c) exit all positions at the next day’s close – is that correct? 4. Transaction costs / slippage: Should we assume zero, or would you like me to include a specific cost per trade? Once I have these details I can lay out the data-retrieval plan and run the back-test for the period 2022-01-03 (first trading day of 2022) through today.