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Tesla Battery Day vs. Volkswagen Power Day: How Wall Street reacted
Tesla’s Battery Day and Volkswagen’s Power Day were two similar events that showed how the two automakers plan to combat electric vehicle prices within the next few years. Despite the similarities in the events, Wall Street reacted quite differently to both, with Tesla (NASDAQ: TSLA) seeing a minimal effect on its stock in the days following. However, Volkswagen’s stock (OTCMKTS: VWAGY) is soaring over 12% on the day after the event.
Tesla Battery Day
Tesla’s Battery Day was a marquee event for the electric automaker. While the previous year’s focus was Autonomy, 2020 saw battery cells as Tesla’s main concentration. During the event, CEO Elon Musk revealed how Tesla would combat battery prices by continuing to source cells from third-party suppliers, but also by developing its own 4680 cells that are produced by the company in-house. Additionally, new structural battery packs are being used to house the cells and also provide a more robust crash response in the event of an accident. The rigidity of the new structural battery intends to take Tesla’s safety ratings through the roof, where they already reside.
Tesla also revealed plans for a $25,000 car, a blueprint to manufacture 20 million cars per year, and a roadmap to massive cuts in battery cell production costs.
LIVE BLOG: Tesla Battery Day and Annual Shareholder Meeting 2020 updates
Despite the developments, Tesla didn’t receive a big boost on Wall Street. Interestingly, despite the massive developments and plans that Tesla had revealed during the Battery Day event on September 22nd, 2020, the stock closed at $424.23. The day following saw an 11% drop in the stock, as it closed at $380.36.
Many didn’t understand the reason for the drop. Tesla bull and investor Jim Cramer, who was at one time bearish on the automaker’s stock, stated that the stock fell simply because Tesla didn’t announce what some were expecting. “They’re just bummed the things they hyped didn’t happen,” Cramer said. “Tesla rolls out a plan to create an electric car for the masses and greeted with a yawn because Musk didn’t roll out a magic battery. This is what happens when you let expectations get out of control.”
Volkswagen Power Day
Volkswagen’s Power Day was, in effect, the German automaker’s version of Tesla’s Battery Day. The company held an event outlining their plans for cell cost reductions, along with plans for six total production plants across Europe. VW also has established several partnerships with European energy companies to roll out an expansive charging infrastructure, among many other developments.
“We aim to reduce the cost and complexity of the battery and at the same time increase its range and performance,” Volkswagen Group Board Member for Technology Thomas Schmall said. “We will use our economies of scale to the benefit of our customers when it comes to the battery too. On average, we will drive down the cost of battery systems to significantly below €100 per kilowatt-hour. This will finally make e-mobility affordable and the dominant drive technology.”
Volkswagen’s Power Day: Six new cell plants, new unified battery cell, charging network partnerships
Volkswagen stock began Monday’s trading session at $28.38. After the developments that VW announced, the stock shot up $1.38, a boost of 4.86%. However, the German company’s stock is enjoying massive gains today, just one day after the big event. After closing at $29.76 yesterday, VW stock has increased another 3.48% at the time of writing, for a total gain of 11.69% as of 2:30 PM EST.
The differences in the presentations and how Wall Street has responded to them are unknown. However, the sheer size of Volkswagen’s production figures could be the main reason for the increased investor response. While Tesla’s rollout of 500,000 vehicles in 2020 was a company best, Volkswagen delivered 9.3 million vehicles last year. For context, VW has also been around since 1937, while Tesla has only produced a mass-market vehicle since 2017.
Tesla is undoubtedly the leader in electric vehicles. Volkswagen, while still working out software kinks, could be considered second-place by some because of the successful adaptation of the ID. family of vehicles in Europe so far. However, it is still admittedly ironing out some software issues with its MEB platform, and it seems somewhat odd that VW’s stock received such a healthy boost in the day following its Power Day event.
What do you think? What is the reasoning for the substantial difference in Wall Street’s reaction? Let us know in the comments below, or Tweet me directly.
Disclosure: Joey Klender is a TSLA Shareholder.
News
SpaceX set to launch astronauts and a classified Falcon Heavy mission on the same day
SpaceX plans three launches Thursday, including Crew-13 astronauts and Falcon Heavy’s first classified NRO mission.
SpaceX is lining up one of the busiest single days in its history, and the company offered a preview on Wednesday morning with a simple post on X: “Sunrise at pad 40.” The video and photos show Falcon 9 standing at Space Launch Complex 40 at Cape Canaveral, roughly a day before it is scheduled to carry four astronauts to the International Space Station.
That launch is only the first of three SpaceX missions planned for Thursday, October 1, across both coasts.
Sunrise at pad 40 pic.twitter.com/J7Qme4VvIX
— SpaceX (@SpaceX) September 30, 2026
Crew-13 is targeting liftoff at 11:10 a.m. ET, with a backup opportunity Friday at 10:47 a.m. ET. NASA astronaut Jessica Watkins will command the mission, with NASA’s Luke Delaney as pilot and Canadian Space Agency astronaut Joshua Kutryk and Roscosmos cosmonaut Sergey Teteryatnikov serving as mission specialists. According to NASA, Dragon is set to dock with the forward port of the station’s Harmony module around 8 p.m. ET, less than nine hours after launch. Watkins is the only member of the crew who has flown before, and Kutryk will become the first Canadian to reach orbit through NASA’s Commercial Crew Program.
The Falcon 9 booster is flying for the third time after supporting Crew-12 and a Starlink mission, and it will attempt a landing at Landing Zone 40 beside the pad. That site made its debut in February when the Crew-12 booster touched down there, as Teslarati reported at the time. Crew-13 will relieve the Crew-12 astronauts, who have been aboard the station since the middle of February.
On the West Coast, another Falcon 9 is scheduled to lift off from Vandenberg Space Force Base in a window running from 2:18 to 3:16 p.m. ET, a flight NASASpaceflight lists as a Transporter rideshare mission.
The day is set to close at 11:53 p.m. ET, when Falcon Heavy launches from Launch Complex 39A with NROL-97, the first National Reconnaissance Office payload ever to fly on the rocket. SpaceX rolled the vehicle out to the pad Tuesday night. Its two side boosters, which previously flew GOES-U, ViaSat-3 F3 and NASA’s Roman Space Telescope, will return to Landing Zones 1 and 2, while a new center core will be expended in the Atlantic. The Roman launch took place on August 30, so NROL-97 will come barely a month later as Falcon Heavy’s third flight of 2026 and 14th overall.
NASA taps SpaceX to launch the telescope that could unlock new worlds
If all three Florida boosters land as planned, it would be the first time the Space Coast has seen landings at LZ-40, LZ-1 and LZ-2 on the same day, according to the Orlando Sentinel, which has warned residents in Brevard, Orange and Volusia counties that more than one sonic boom is possible.
The schedule arrives just three days after Starship reached orbit for the first time on Flight 14 from Starbase, Texas, deploying 26 Starlink V3 satellites. If Thursday’s missions stay on time, SpaceX will have flown Starship, Falcon 9 and Falcon Heavy from four different pads in about four days.
Crew-13 is also the start of a longer run for Dragon. NASA recently added Crew-15, Crew-16 and Crew-17 to SpaceX’s contract in a $946 million modification, keeping Dragon as the agency’s only operational ride to the station while Boeing’s Starliner remains grounded.
News
Tesla Cybercab and Semi have more in common than you might think
Although the two vehicles are built for completely different use cases, Tesla utilized engineering expertise while developing both the Cybercab and Semi to build a thermal architecture that would fit both vehicles. Of course, with some slight revisions.
The development was noted by Lars Moravy and Dan Priestley last week at Tesla’s Semi Handover event in Sparks, Nevada, where the company showed off its dedicated production facility for the Class 8 truck.
🚨 Tesla designed the integrated thermal systems for Cybercab and Semi at the same time as the vehicles were both in development
Tesla wanted to build one thermal system that worked with both vehicles, apart from small modifications.
Semi and Cybercab share parts 🤯 pic.twitter.com/KmzSsUbrcg
— TESLARATI (@Teslarati) September 25, 2026
Tesla’s decision to develop one thermal architecture for both the Cybercab and Semi is one of the more revealing engineering choices in the company’s 2026 lineup:
“We designed it at the same time we designed the Cybercab and we said okay we’re going to take our most efficient vehicle and our biggest vehicle and we’re going to take one thermal system and make it work for both.”
Core parts, meaning the compressor, pumps, and heat exchangers, are shared, with only modest changes to cooling-loop sizing and a larger radiator on the truck. The result, they said, is a compressor and thermal stack already proven across millions of miles, delivering “reliability from day one.”
Priestley also highlighted a practical payoff of the indirect design:
“There’s no AC lines, there’s no refrigerant lines…It comes from the factory fully charged, sealed with refrigerant, and it just exchanges coolant. It doesn’t actually run refrigerant up to the front of the vehicle.”
This eliminates potentially leak-prone plumbing that would otherwise require hands-on service, reducing overall uptime and potentially cutting into business margins. The megamanifold runs cabin HVAC and every powertrain heating and cooling loop at once, recapturing waste heat from motors and the battery instead of dumping it the way a diesel engine does.
The approach is just the latest chapter in a continuing story of stretching thermal solutions across wildly different vehicles. Model Y’s Octovalve evolved into the Super Manifold used on Cybertruck, and later Model S/X refreshes. Cybercab then introduced Supermanifold V3, which Tesla says is 80 percent automated to build and 38 percent more efficient than typical automotive thermal systems.
This thermal system is also shared with Cybercab – one thermal system for both our most efficient vehicle & our biggest vehicle
— Tesla Semi (@tesla_semi) September 25, 2026
Tesla has done the same with the 4680 cells, both being utilized in the Cybertruck and Semi, and with heat-pump compressors that Priestley noted were already common across the passenger-car fleet.
Concurrent development of crucial vehicle elements buys scale and reliability that a truck-only thermal system could not match. High-volume passenger car parts are cheaper and more accessible, which can give fleets a sealed, low-maintenance loop of operation from their first day of operation.
For owners and operators, that translates into less energy spent on cabin heat in the colder months, fewer refrigerant-related repairs, and a thermal architecture already stress-tested at passenger-car volumes before the first high-volume Semi left the lines in Nevada.
Elon Musk
Elon Musk weather update tips Tesla Roadster speculation into Plaid Mode
Tesla CEO Elon Musk certainly tipped off some details of the Tesla Roadster event with a broadening of information regarding the company’s decision to delay the unveiling for two weeks.
For years, people have speculated about what the Roadster will be capable of. While there have been plenty of things said about what it *could* do, we have not seen or been told by Tesla what it will actually be capable of.
However, over the past few days, Tesla’s weather updates have truly pushed the speculation into Plaid Mode, basically all but confirming the car will have some sort of aerial capability — whether that would be hovering or fully flying remains to be seen — but it definitely seems that it will be able to leave the ground intentionally.
“Because this event can only be held outdoors…”
Tesla posted on Monday that it would delay the Roadster event until October 15, and it indicated that it had to do this because the event “can only be held outdoors.”
With the potential SpaceX collaboration to develop cold-gas thrusters that will help the vehicle go airborne, doing this indoors is probably not a safe, or even plausible, possibility.
Roadster event update
We’ve been tracking the weather closely with local meteorologists, but given the severe conditions predicted & because this event can only be held outdoors, we’ve made the difficult decision to reschedule.
New date is October 15. Additional details to…
— Tesla (@Tesla) September 28, 2026
FAA Airspace Restriction
The FAA gave Tesla a Temporary Flight Restriction (TFR) for 10,000 feet above ground level, much higher than the typical 2,000-foot restrictions that are usually placed at SpaceX’s McGregor, Texas site.
Tesla Roadster event requires restricted airspace, and the FAA obliges
Some have said that this massive increase is due to Tesla’s need to restrict unauthorized drone use for spying on the event.
Elon Admits High Winds
“Due to high winds, the new Roadster demo is postponed by 2 weeks,” Musk said in a post on X yesterday.
Due to high winds, the new Roadster demo is postponed by 2 weeks https://t.co/dV3ojDh1iT
— Elon Musk (@elonmusk) September 30, 2026
A reply reading, “What’s strong wind got to do with a car demo with four grounded wheels?” was directly below Musk’s post, satirically and sarcastically probing for more details.
All signs are pointing toward an aerial demonstration for the Roadster.