The breakdown electric field strength of silicon carbide materials is ten times that of silicon, and the electron mobility is three times faster—such technological breakthroughs should lead to soaring stock prices. However, a leading stock closed with a long upper shadow on the day the good news was released. Similar ‘death upon exposure’ phenomena are frequently seen in the semiconductor sector, where major funds orchestrate a carefully arranged ‘puppet show’. Ordinary investors must see through the rules of the game to avoid becoming mere applauding spectators.Why do technological benefits often become stock price traps?The semiconductor industry has rapid technological iterations and high professional thresholds, making it difficult for ordinary investors to deeply understand the technical details, easily falling into the trap of ‘technological determinism’.Major funds often exploit information asymmetry to create expectation gaps: They first push up stock prices with vague expectations, then sell off when the good news materializes. For example, while silicon carbide materials have broad prospects, challenges such as yield rates and cost control remain real issues for companies, making blind chasing of high prices easy to fall into valuation traps.How does algorithmic trading distort price signals?In recent years, the activity of algorithmic trading in the semiconductor sector has significantly increased, with the frequent appearance of sawtooth waves on intraday charts being clear evidence.The convergence of quantitative strategies has intensified short-term price fluctuations, rendering fundamental analysis ineffective in the short term. Retail investors relying solely on technical charts are easily ‘harvested’ by high-frequency trading. Sanan Optoelectronics has historically shown a typical pattern of ‘gapping up and then falling back the next day after a conference call’.How can ordinary investors break the deadlock?In the face of the ‘puppet show’ by major funds, retail investors need to establish a multi-dimensional assessment system:Focus on practical indicators such as production capacity progress, customer certification progress, and changes in gross profit margins, rather than simply chasing technological concepts. It is also advisable to adopt a phased investment strategy to avoid heavy bets all at once. Maintain vigilance against sudden price spikes and drops during trading, adhering to the principle of ‘not chasing high on good news, and not panicking on bad news’.ConclusionInvesting in the semiconductor industry requires penetrating the technological fog to grasp the actual progress of the industry and the rhythm of capital games. Only by recognizing the puppeteer behind the ‘puppets’ can one navigate this highly volatile market steadily and far.