Shanghai, Feb 1, 2026, 09:51 GMT+8 — The market has closed.
Piotech Inc’s yuan-denominated A-shares (688072.SS) on the Shanghai Stock Exchange’s STAR Market closed Friday down 2.47% at 352.74 yuan, putting the semiconductor-equipment stock on the back foot heading into Monday.
The timing is key as the wider chip-equipment sector also lost steam. On Friday, the SSE STAR Market semiconductor materials and equipment theme index was down roughly 1% by mid-session. A related ETF following the same theme fell about 1.16%, according to sector data.
Investors are weighing the impact of recent stake reductions by a state-backed shareholder. A company notice revealed that the National Integrated Circuit Industry Investment Fund trimmed its stake to 16.86%, offloading 2.98 million shares through block trades from Jan. 13 to Jan. 22.
A separate filing showed the fund wrapped up its broader block-trade sale on Jan. 27, unloading 8.43 million shares—roughly 2.99% of Piotech’s total share capital—raising about 3.02 billion yuan. Post-sale, the fund’s stake dropped to 16.50%.
Piotech also announced it held an extraordinary shareholders meeting on Jan. 26 in Shenyang, where no proposals faced vetoes.
In mainland China, “A-shares” refer to onshore stocks traded in yuan. “Block trades” are sizable negotiated transactions, commonly used to reduce stakes without flooding the open market with orders.
Friday’s trading was volatile. Shares fluctuated from 348.21 yuan up to 370.51 yuan, with roughly 2.02 billion yuan changing hands, data revealed.
Piotech specializes in thin-film deposition equipment—machines that apply ultra-thin coatings onto silicon wafers in chip manufacturing. Their lineup features plasma-enhanced chemical vapor deposition and atomic layer deposition systems, which are integral to both memory and logic chip production.
That places it alongside domestic equipment makers like NAURA Technology Group and Advanced Micro-Fabrication Equipment Inc China. Meanwhile, ASML continues to lead the pack in advanced lithography globally.
Piotech is included in the SSE STAR Market 50 index, a factor that can amplify price swings when funds tied to the index adjust their positions.
The stock’s next move hinges on more than just the sector’s tone. If selling picks up again, or if sentiment in onshore tech sours further, the pressure will mount—making any dips tougher to catch.
What to watch next: trading picks back up Monday, Feb. 2. Investors will eye the open for follow-through and keep tabs on any fresh filings related to shareholder moves or block trades.
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