On August 18, 2026, a significant event unfolded in the options market for the semiconductor sector, specifically targeting the VanEck Semiconductor ETF (SMH). While the majority of traders exhibited bullish sentiment—the ratio of open put to call contracts on SMH dropped to 1.89, the most lopsided towards calls since early April and down from a high of 3.5 in late June—one trader made a massive contrarian bet against chip stocks [1]. This single options trade, valued at $129 million, accounted for over a third of the total premium in SMH on Monday and was the largest options transaction in the market that day [1].
The trade involved the purchase of 20,100 630-strike SMH puts expiring November 20, executed just before 11 a.m. ET on the Nasdaq PHLX exchange. With SMH trading at $594 and open interest in the contract below 50 at Friday's close, this position was almost certainly new and likely represents a synthetic short bet against the semiconductor group [1]. The size of this bearish trade was 3.5 times larger than the second-biggest options transaction that day, a $37 million leg in Sandisk [1].
Recent market dynamics show that traders had previously increased their put buying in late May and early June as SMH momentum slowed, with the open-interest ratio peaking at a one-year bearish high on June 24, just two days before SMH entered a 25% draw-down [1]. According to Zed Francis, CIO of Convexitas, banks' exposure to leveraged ETFs and heightened situational awareness led to increased hedging and volatility earlier in the summer, but the unwinding of these hedges has now made volatility in the sector inexpensive. SMH implied volatility collapsed from 65% last month to 40% on Monday, the lowest since February [1].
Don Kaufman, co-founder of TheoTrade, commented on the unusual pricing in semiconductor options, noting that "the further out you go in some of these semiconductor options, the dumber the options pricing gets betting on an upside crash," which he sees as a contrarian indicator [1].
CONCLUSION
A single trader's $129 million bearish options bet against the VanEck Semiconductor ETF stands out amid a generally bullish crowd, highlighting a sharp divergence in sentiment. The trade's size and timing, coupled with falling volatility and unwinding hedges, suggest heightened uncertainty and potential for significant market movement in the semiconductor sector. Investors should monitor SMH closely for further volatility and shifts in sentiment.