Semiconductor shares sold off hard on Thursday after an analyst raised concerns that the AI data-centre buildout could peak in 2027 rather than later in the decade, with growth expected to moderate in 2028 even though hyperscaler capex is seen exceeding $1 trillion next year. The Philadelphia Semiconductor Index (SOX) fell as much as 11%, marking its worst session since the Covid shock on 16 March 2020, when it dropped 15.9%. The move echoed 5 June, when the index sank 10.3% following a weak earnings read-through from Broadcom.
All 30 SOX constituents traded lower. Broadcom and Nvidia were both down more than 8% at the time of reporting, while Cerebras Systems and STMicroelectronics each fell more than 10%. Technically, SOX entered the session already below its 200-day Simple Moving Average, and the day’s decline produced a gap-down move that opened beneath the prior support area around the 10,000 level. The next chart reference cited was 8,400, which acted as resistance in January and February, implying a further 8.5% downside if revisited, with the Relative Strength Index described as overbought.
Derivative Strategy Adjustments as SOX Breaks Key Support
We must immediately adjust our derivative strategies after the Philadelphia Semiconductor Index suffered a severe break below the critical 10,000 level. With option volatility surging across tech components, we should prioritize downside protection by purchasing put options or setting up protective collar strategies on existing equity holdings. This defensive posture shields capital while the market digests fears that artificial intelligence infrastructure spending could cool off sooner than anticipated.
Historically, single-day chip index drops of this magnitude—such as the 15.9% panic sell-off in March 2020—signal extended periods of price discovery rather than immediate V-shaped recoveries. Because the index has gapped down below its 200-day simple moving average, we expect ongoing downside pressure toward historical chart support around 8,400. To take advantage of inflated option premiums during this period of high volatility, traders can execute bear call spreads to generate income with defined risk.
Options Tactics for Navigating Further Downside and Volatility
If we want to capture a potential 8.5% further decline down to the 8,400 level, using long put spreads offers an efficient, low-cost way to trade the downward momentum. Given that all 30 holdings in the index traded lower together, purchasing options tied to major chip components provides direct market exposure. Alternatively, holding long straddles can help us profit from continued price swings in either direction as upcoming corporate earnings releases stir up further turbulence.
Even if technical indicators indicate oversold conditions, we should avoid buying unhedged call options while an active gap-down scenario is unfolding. Previous sector liquidations show that early rallies during a major market drop frequently fail at former support zones. We should wait for option volatility to normalize and for clear price consolidation before considering long-term bull spreads or call contracts.
