iShares PHLX SOX Semiconductor (SOXX)

Key Updates

SOXX has declined 2.06% since the August 27 report, falling from $519.40 back to $508.69, fully reversing the brief rebound noted in the prior update. The ETF dropped 3.19% in the most recent session alone, confirming that the $508-$519 zone remains a contested battleground rather than a stable base. The current price sits just above the $505 close recorded on July 31 and closely tracks the $506 level at which Michael Burry disclosed adding to his short position on July 30, underscoring that this area continues to act as a key reference point for the market.

Current Trend

SOXX remains up 68.92% YTD and 44.40% over six months, confirming a powerful longer-term uptrend driven by the AI/semiconductor cycle. However, short-term momentum has turned negative: the ETF is down 2.18% over five days and 3.19% intraday, while the one-month return has compressed to 9.40% from higher levels seen in prior reports. The ETF is oscillating within a $505-$536 range established over the past month, with $508-$510 acting as immediate support (aligned with the July 31 close and Burry's $506 short-add level) and $519-$536 as the nearest resistance band (the site of the August 27 rebound high and Burry's July 24 short-add level).

Investment Thesis

The core thesis remains centered on the durability of AI-driven semiconductor demand versus valuation risk. SOXX's YTD and 6-month gains reflect strong underlying capex and AI infrastructure spending trends across the sector's constituents. However, valuation metrics flagged by prominent short-sellers—including a price-to-sales ratio exceeding 16 and a premium to the 200-day moving average at its highest level since 2000—suggest the rally has outpaced fundamentals, creating asymmetric downside risk if AI capex growth decelerates or sentiment shifts.

Thesis Status

The bearish valuation thesis is gaining validation: the ETF's inability to sustain the August 27 bounce above $519 and its swift reversion to sub-$509 levels mirror the exact price zones where Michael Burry built and reinforced his short position ($643, $536, $506). The Business Insider report explicitly notes Burry "nailed" his bet as SOXX fell 21% to $505 by July 31, and he has since rolled puts to March 2027 with strikes in the low-to-mid $400s, signaling continued conviction in further downside. This does not invalidate the long-term AI demand thesis but confirms that near-term price action is increasingly driven by valuation-correction dynamics rather than fundamental deterioration.

Key Drivers

The dominant driver remains investor positioning around extreme valuation levels. Per Business Insider, Burry cites the Philadelphia Semiconductor Index's price-to-sales ratio above 16 and its premium to the 200-day moving average—the highest since 2000—as justification for maintaining and expanding bearish bets, including against Nvidia and Micron individually. The VanEck Semiconductor ETF (SMH) posted its worst July performance in 30 years, reinforcing a broader sector-wide de-rating trend that continues to weigh on SOXX price action into late August.

Technical Analysis

SOXX is retesting the $505-$509 support zone after failing to hold the $519-$536 resistance band tested in the prior report. The steep 3.19% single-day decline signals renewed selling pressure and elevated volatility. A confirmed break below $505 would open downside toward the low-$400s strike prices referenced in Burry's rolled put options, while a reclaim of $519-$536 would be required to stabilize the near-term technical picture and negate the current bearish short-term structure.

Bull Case

• YTD performance of +68.92% and 6-month gain of +44.40% confirm a structurally strong AI-driven demand cycle for semiconductors remains intact despite recent volatility (Business Insider).
• The 1-month return of +9.40% indicates the ETF retains capacity for sharp rebounds, suggesting dip-buying demand persists at lower price levels.
• Repeated defense of the $505-$508 zone across multiple sessions (July 31 close, current level) suggests this area may function as a durable technical floor absorbing selling pressure.
• The broader AI capex narrative underlying the SOX Index's prior rally has not been reported as fundamentally impaired, only revalued, leaving room for renewed upside if sentiment stabilizes.
• Elevated short interest and put positioning (including Burry's disclosed bets) could set up conditions for a short-covering rally if AI demand data surprises to the upside (Business Insider).

Bear Case

• The Philadelphia Semiconductor Index's price-to-sales ratio exceeds 16, with its premium to the 200-day moving average at the highest level since 2000, indicating extreme overvaluation relative to historical norms (Business Insider).
• Michael Burry has rolled put options to March 2027 with strike prices in the low-to-mid $400s, reflecting continued conviction in further downside from current levels (Business Insider).
• The VanEck Semiconductor ETF (SMH) recorded its worst July performance in 30 years, signaling sector-wide de-rating pressure extending beyond a single fund (Business Insider).
• Burry has expanded bearish positioning to individual chipmakers including Nvidia and Micron, suggesting broad-based skepticism toward the sector rather than an isolated ETF-level bet (Business Insider).
• The reversal of the August 27 rebound and renewed 3.19% single-day decline confirms failure to sustain recovery above the $519 resistance level, indicating fragile near-term momentum.