The Star 50 Index has just completed its quarterly rebalancing, set to take effect after the market close on September 11th. When the new roster was unveiled, many observers immediately noted that this wasn't just a routine adjustment—it looked like a targeted restocking of AI computing power names.

So, who exactly made it into the index this time around? The Star 50 has swapped in five new constituents. The incoming names include 睿创微纳 (a leader in infrared chips, often called the "eye of AI"), 华丰科技 (a maker of high-speed connectors, critical for AI server interconnects), 屹唐股份 (a semiconductor equipment provider excelling in dry stripping and rapid thermal processing), 影石创新 (known globally for its Insta360 panoramic cameras in AI terminal hardware), and 盛合晶微 (a specialist in advanced packaging like 2.5D/3D and Chiplet, vital for AI chip manufacturing).

At first glance, the new additions are overwhelmingly concentrated in sectors related to AI computing and semiconductors, showing a highly consistent strategic direction. Looking at the reserve list, candidates like 仕佳光子, 安集科技, and 天岳先进 also point toward optical chips and semiconductor materials—meaning even if a current member is temporarily removed, the replacement would likely come from a similar industry backdrop.

On the flip side, the five stocks being removed are scattered across sectors like synthetic biology, drones, display panels, wearables, and medical devices. They lack a unifying industrial theme, with their common trait being a decline in market capitalization and liquidity rankings. The message is clear: this rebalancing is bringing more hard-tech companies into the Star 50 Index.

Why this particular adjustment? This isn't a spontaneous decision but rather the index's fixed methodology. The Star 50 is rebalanced quarterly, with changes generally capped at 10% of the constituents, selecting stocks based on market cap and liquidity to keep the most representative 50 names on the STAR Market. In other words, the index itself is continuously upgrading its quality by replacing weaker performers with stronger ones.

The Star 50 comprises the 50 largest and most liquid stocks on Shanghai's STAR Market. It was the first index for that board and serves as a key benchmark for tracking its overall performance. Currently, ETFs tracking this index manage nearly 170 billion yuan in assets, making it the third-largest broad-based index product in the domestic market.

Looking at the index's composition, as of the end of July, the top ten constituents together account for nearly 60% of the total weight. These include heavyweight names like 寒武纪 (Cambricon), 中微公司 (AMEC), 海光信息 (Hygon), 中芯国际 (SMIC), and 澜起科技 (Montage Technology), all firmly rooted in the semiconductor supply chain. To break that down further: 寒武纪 holds an 8.6% weight in digital chip design, 中微公司 8.0% in semiconductor equipment, 海光信息 8.0% in digital chip design, 中芯国际 7.8% in IC manufacturing, and 澜起科技 7.3% in digital chip design. Other notable names include 拓荆科技 at 4.7% (semiconductor equipment), 源杰科技 at 3.9% (discrete devices), 华海清科 at 3.6% (semiconductor equipment), 华虹宏力 at 3.5% (IC manufacturing), and 佰维存储 at 3.0% (digital chip design). Data sourced from Wind, as of July 31, 2026.

Putting these pieces together, the logic becomes clear: because the Star 50 operates strictly by its methodology, each rebalancing consistently brings in and retains the most representative hard-tech companies. This ensures the index dynamically evolves with the market's leading innovators.

Now, turning to market performance and strategy: In the first half of 2026, the Star 50 surged 64.25%, but then gave back over 20 percentage points during July and August's correction, sparking divergent views among investors. Optimists argue that the AI narrative continues to drive semiconductor trends forward, while skeptics caution that the substantial first-half gains, crowded trading, and hawkish signals from the U.S. Federal Reserve could pressure growth-style valuations. On balance, short-term volatility is unavoidable, but the hard-tech direction represented by the Star 50 remains one of the more clearly defined long-term industrial trends.

For investors looking to tap into this theme without betting on individual stocks, index funds offer a convenient route. Rather than hand-picking companies, you simply track the index directly. The E Fund SSE Star 50 Index Feeder Fund (A-class: 011608, C-class: 011609, Y-class: 022895) tracks the Star 50 Index and charges one of the lowest management fees in the market at 0.15% per annum. It's available for subscription through the fund company's direct sales platform, banks, and internet channels.

In terms of practical application, two points are worth keeping in mind. First, the Star 50 is better suited as an "offensive position." Its risk-return profile differs from broad-based indices like the CSI A500 or CSI 300, so it typically serves as a source of upside elasticity within a portfolio. Second, regular investing (dollar-cost averaging) is the most straightforward way to handle high volatility. With such a high-beta index, timing entry points is notoriously difficult; disciplined periodic investing can transform the fear of drawdowns into an opportunity to accumulate shares at lower prices.

Still have questions about index investing? Need more detailed data? Open the "Index Express" WeChat mini-program and ask their AI assistant directly for professional answers.