QuantumScape Sinks 14%, Solid Power and SES AI Fall as Solid-State Battery Stocks Slide
QuantumScape (NYSE:QS) shares fell about 14% after its Q2 2026 results, despite a narrower net loss of about $98 million, or $0.16 per share, versus an expected $0.1781 loss. The company reaffirmed 2026 adjusted EBITDA loss guidance of $250 million to $275 million and said it trimmed capex to $27 million to $37 million. Solid Power (SLDP) and SES AI (SES) also dropped.
How this was made
The 30-second read
Why it matters
Despite an EPS loss beat and reaffirmed EBITDA loss range, the stock dropped sharply, indicating investors are still not satisfied with near-term revenue and manufacturing execution proof points.
Market read
The key tradable takeaway is that even positive headline catalysts (Honda partnership, EPS beat) did not prevent a large post-earnings drawdown, implying the market is demanding clearer revenue and manufacturing execution signals.
What to watch
The article notes trimmed capex guidance and improved operating expense trends; traders may be underweighting cost discipline versus revenue visibility.
Background
QuantumScape reported Q2 2026 results after the July 22 close and reaffirmed full-year 2026 adjusted EBITDA loss guidance while trimming capex; it also highlighted a multi-year Honda partnership and other milestone updates.
Ticker impact
QuantumScape shares sank 14% after Q2 results and a Honda solid-state battery partnership, despite an EPS loss beat and EBITDA guidance reaffirmation.
Near-term downside bias likely persists until revenue/milestone execution becomes more tangible.
The article cites a 14% drop on the same earnings release, with investors focused on lack of near-term revenue and execution risk, even after the Honda partnership and EPS beat.
Solid Power slid 8% in sympathy with the solid-state battery selloff tied to QuantumScape’s post-earnings reaction and risk-off tape.
Choppy to lower trading likely if the sector remains risk-off and investors keep de-risking speculative battery names.
The article provides SLDP’s price move but no distinct SLDP-specific catalyst beyond cohort selling and broader index weakness.
SES AI shares fell 10% alongside QuantumScape and Solid Power as solid-state battery stocks dropped on the same risk-off backdrop.
Downside continuation possible if the market keeps punishing high-beta speculative names.
The text attributes the broader tape impact and does not disclose a SES-specific new event.
Market effects
Reinforces that solid-state battery stocks can sell off even with headline partnerships and EPS beats, increasing scrutiny on revenue timing and manufacturing execution.
Primarily US small-cap/high-beta growth pressure, with broader index weakness amplifying the move.
Honda and Volkswagen PowerCo milestone references highlight ongoing global OEM engagement, but the market response suggests execution risk remains the key global variable.
Counterpoint
The Honda partnership and initial QSE-5 cell shipments could be early-stage de-risking; the selloff may be positioning rather than a fundamental reset.
Key entities
- companyQuantumScape
Solid-state battery developer whose Q2 results and Honda partnership triggered a 14% sell-the-news drop.
- companySolid Power
Solid-state battery peer that fell 8% in the same cohort selloff.
- companySES AI
Solid-state battery peer that fell 10% alongside the sector move.
- companyHonda Motor
OEM partner referenced in QuantumScape’s solid-state lithium-metal battery partnership update.
- companyVolkswagen PowerCo
Referenced via updated milestones tied to QuantumScape’s technology program.
