Why Is NIO Stock Spiking Nearly 4% In Overnight Trading?

Nio says it is the first automaker to synchronize driver-assist software releases across third-party and in-house chip platforms.

• The update reaches cars sold up to four years ago and runs across both Nvidia Orin-X and Nio's Shenji chips.
• Nio claims lower latency, smoother vehicle control and industry-leading route selection without HD maps.
• Driver-assist usage has doubled since January, while Nio's AI compiler boosted inference performance by 20%.

U.S.-listed shares of Nio, Inc. (NIO) jumped over 3.7% overnight late Wednesday after the EV maker began rolling out a major upgrade to its Nio World Model (NWM) driver-assist platform, bringing its latest AI driving tech to over 700,000 vehicles.

Nio’s U.S.-listed stock jumped 1% on Wednesday, snapping three straight sessions in the red. 

Nio Targets Human-Like Driving With New AI

The latest release is being deployed simultaneously across vehicles powered by Nvidia's Orin-X chips and Nio's in-house Shenji NX9031 processor. Notably, Nio said owners who purchased vehicles as far back as four years ago will receive the update, extending advanced software capabilities across a large portion of its installed fleet, according to CnEVPost. 

Nio said it is the first automaker to achieve synchronized driver-assist software releases across both third-party and proprietary chip platforms. The update introduces a three-layer training architecture combining "world model + supervised fine-tuning + closed-loop reinforcement learning," building on the reinforcement-learning framework introduced earlier this year. According to Nio, the supervised fine-tuning layer helps the system learn "human-like driving behavior," while improving compliance and safety.

Nio Boosts AI Performance By 20%

Nio said the new software marks another industry first in China by allowing the driver-assist system to directly output steering, acceleration and braking commands rather than relying on sampled driving trajectories. The company said the approach reduces latency and improves the smoothness and precision of vehicle control.

Nio also claimed industry-leading route-selection accuracy without relying on high-definition maps and said its system can now recognize tidal lanes and variable overhead lane signs in real time. The company added that the latest version delivers strong performance on two traditionally competing metrics: reducing false braking while maintaining effective risk intervention.

The rollout comes as Nio reports growing adoption of its autonomous-driving features. According to the company, user duration and usage rates for driver-assist functions have doubled since the previous major update was released in January. Its internally developed AI compiler has shortened development cycles for new model operators from one to two weeks to just one to two days while boosting inference performance by 20%.

Nio Extends AI Push To Onvo

The software upgrade is also extending to Onvo, Nio's mass-market brand, through the rollout of Coconut+ 3.0.2. The move comes days after Onvo relaunched its L60 SUV at a lower-than-expected starting price despite adding premium hardware, including Nio's Shenji chip, LiDAR and the NT3.0 platform.

The aggressive pricing strategy has increased pressure on margins. Nio founder and CEO William Li recently acknowledged that rising supply chain costs have sharply increased production expenses and described margins on the refreshed L60 as "pretty dire," EV noted.

How Do Retail Traders Feel About NIO?

On Stocktwits, retail sentiment for NIO was ‘bearish’ amid ‘low’ message volume.

One user said, “$NIO hope this isn't a headfake or a run up to short! Tired of the corruption on this stock. Already down 2% from an hour ago.”

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Another user said, “$NIO bottoms in, market makers will make a few more attempts but everybody knows this is the bottom.”

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Nio’s U.S.-listed stock has jumped 47% over the past year. 

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