SSE Composite Reclaims 4,100 Points, STAR 50 Rises Nearly 2%, Solar Inverter Stocks Plunge
N.R. Finch
A-shares diverged on July 1: the Shanghai Composite reclaimed 4,100 and the STAR 50 rose nearly 2%, but solar-inverter stocks plunged after reports that the Trump administration is drafting an import ban — policy tailwinds and policy headwinds hitting different sectors on the same day.
How did the broad market move?
The Shanghai Composite rose 0.37% back above 4,100; the Shenzhen Component gained 0.31%. The ChiNext index slipped 0.27%, falling more than 1% intraday.
The STAR 50 climbed nearly 2%, extending its streak. This means → capital is concentrating in tech-growth names; a "stable main board, strong STAR" pattern is holding.
Hong Kong markets were closed for a holiday — no cross-border signal on the day.
Why was semiconductors the strongest theme?
Semiconductor-materials names surged: Jinghong Gas, Oriental Zirconia, Haohua Tech, and Do-Fluoride all hit the daily limit; GRINM Silicon and Kaidi Quartz rose over 10%.
Memory chips stayed hot: Yingxin Development posted its third limit-up in four days; Puya Semi and Ingenic jumped over 10%; Longsys, Shannon Xinchuang, and Biwin followed.
The catalyst: a JPMorgan report projecting the global memory market will soar from $214 billion in 2025 to $1.68 trillion by 2028, with DRAM revenue alone hitting $1.23 trillion. In plain terms = JPMorgan sees this memory cycle running "higher and longer" — nearly an 8× expansion in four years — and money is front-running that call.
What drove brokerages and humanoid-robot stocks?
Brokerage stocks spiked intraday: Huaan Securities hit the limit; Tianfeng Securities rose over 8%; Changjiang Securities gained over 6%.
Humanoid-robot names stayed active: Topstar surged over 16%; Meili Tech rose over 10%.
On the news side, Tesla's Optimus 3 mass-production signal firmed up: the Fremont factory line retrofit is complete, V3 production is set to start in July–August, and more than 10 Chinese suppliers have entered the supply chain. This means → the production timeline is now concrete, and Chinese suppliers are moving from "story" to "orders."
Why did solar-inverter stocks crash?
Sungrow Power fell over 15% intraday, touching the daily limit-down; Chint Power, Ginlong, GoodWe, and Deye followed. Inverters led the entire solar chain lower.
The trigger: Reuters, citing five people familiar with the matter, reported that the Trump administration is drafting an order to ban imports of foreign-made inverters. The FCC is preparing restrictions that could be released as early as this year.
In plain terms = an inverter — the device that converts a solar panel's DC output into household AC power — is a critical link in China's solar exports to the U.S. If the ban lands, the affected companies' American revenue goes to zero. The market is pricing in the worst case.
How did bonds and commodities fare?
Treasury futures fell across the curve: the 30-year contract dropped 0.14%, the 10-year 0.07%, the 5-year 0.04%, and the 2-year 0.01%.
Commodities diverged: lithium carbonate bucked the trend with a nearly 4% gain, while glass, caustic soda, iron ore, coking coal, and coke all fell more than 1%.
This reflects the bond market's reaction to a short-term rise in risk appetite — when equity-market activity heats up, bonds come under pressure.
What to watch next?
The day's core tension: whether the policy and fundamental tailwinds behind semiconductors and brokerages can keep offsetting the drag from external-policy shocks to the solar chain.
In plain terms = one side runs the "domestic substitution + memory super-cycle" playbook; the other faces "U.S. ban" pressure. These two forces pulled the market in opposite directions on the same day.
Key follow-ups: when the formal inverter-ban text drops, and whether memory-cycle data continues to validate JPMorgan's forecast — these two threads will set the direction of sector rotation.
Content is for reference only, not financial advice.