On September 16, IBM fell 3.08% in pre-market trading, trading at $241.1/share, with turnover of approximately $13.97 million.

The decline was primarily driven by a broad global selloff in semiconductor and AI hardware stocks. The Philadelphia Semiconductor Index recently plunged nearly 6% in a single session, erasing over $500 billion in aggregate market capitalization across the chip supply chain. The wave of selling was triggered after Broadcom's quarterly guidance disappointed expectations, with its AI revenue outlook falling short of consensus estimates, prompting traders to broadly unwind positions in chip-related names. IBM, while not a pure-play semiconductor company, was swept up in the sector-wide risk-off move.

Adding to downward pressure, market sentiment around IBM remains in a recovery phase following an earlier episode in which the company's Z-series product line significantly underperformed expectations, resulting in a single-day market cap loss of approximately $68 billion and triggering a formal regulatory investigation. Analysts have noted that restoring investor confidence will be a prolonged process.

Notably, IBM's Anderon unit on the same day finalized a $1 billion award under the CHIPS Act to advance its domestic quantum foundry initiative, though the positive catalyst was insufficient to offset broader selling pressure.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)