Chip Stock Rally Suddenly Fizzles as Shorts Regain Control; SOXX May Target $500

The semiconductor stock rally abruptly reversed on Tuesday (18th), as the iShares Semiconductor ETF (SOXX) plunged over 5%, recording its worst single-day performance since July. Technically, SOXX was rejected at a critical resistance zone, with short-term momentum shifting back into the hands of bears.

Chip stocks broadly came under pressure, with Micron (MU-US) down 7.02%, SanDisk (SNDK-US) tumbling 9.01%, and NVIDIA (NVDA-US) also falling 2.34%. Notably, both Micron and SanDisk failed to hold above key technical levels they had breached the previous day, further reinforcing signals that the semiconductor rebound has stalled.

$560 Forms a Dual Resistance

SOXX closed Monday at $559.12, just under $1 away from the 50% Fibonacci retracement of its June-July decline, and nearly touching the 50-day moving average. Both technical indicators converge near $560, forming a clear resistance zone.

SOXX failed to break through this level on Tuesday, quickly reversing lower and breaking back below the 38.2% Fibonacci retracement at approximately $538. It closed the session at $531.39.

Foreign media analysis indicates that as long as SOXX remains below $538, there remains room for further downside in the short term, with the next major round number at $500. Although the long-term uptrend in semiconductor stocks remains intact, the current technical structure clearly favors bears.

Micron and SanDisk exhibited similar patterns. Both stocks briefly broke above their respective 50% retracement levels of their June-July declines on Monday, only to sharply reverse and close below those levels on Tuesday, with single-day losses of 7.02% and 9.01%, respectively.

In contrast, NVIDIA showed relative resilience, with its share price still near its 2026 highs, though it was dragged down on Tuesday by broad selling pressure in chip stocks.

Bear Put Spread Strategy for Downside Play

With SOXX's rebound failing and short-term momentum weakening, analysts recommend establishing a 'bear put spread' expiring on September 18 to position for potential further declines, while capping maximum risk.

This strategy involves buying one put option with a $540 strike price expiring on September 18, while simultaneously selling one put option with a $500 strike price and the same expiration date.

When SOXX was trading around $530 on Tuesday morning, the cost to establish this spread was approximately $15.95. Since one options contract represents 100 shares, investors would pay about $1,595 to establish one spread position.

Buying the $540 put provides downside exposure near SOXX’s current price, while selling the $500 put generates premium income, reducing the overall cost. However, this also means profits will not increase if SOXX falls below $500.

Maximum Profit of $2,405

From an options pricing perspective, the implied volatility of the $540 put is about 44%, while the $500 put is around 47%. In other words, this strategy involves buying a lower-implied-volatility option and selling a relatively higher-priced downside contract.

The maximum loss for this bear put spread is $1,595—the premium paid to establish the position. The maximum profit is $2,405, with a breakeven price at expiration of $524.05.

If SOXX closes at $500 or below on September 18, the full $40 difference between the two strike prices will be realized. After deducting the $15.95 setup cost, each spread position yields a $24.05 profit, or $2,405 total—approximately 151% of the risked capital.

If SOXX closes above $524.05 at expiration, the strategy begins to incur losses. If it closes at $540 or higher, both puts expire worthless, and the investor loses the entire $1,595 premium.

Monitor Key Levels: $538, $560, and $583

Future price action should focus on three key levels: $538, $560, and $583.

If SOXX regains $538, it would be the first sign that Tuesday’s breakdown is losing momentum. A further close above $560 would indicate the index has re-broken through the resistance zone that capped its recent rebound.

If SOXX rises above approximately $583—the 61.8% Fibonacci retracement level—bearish dominance would clearly weaken, and investors using bearish strategies may consider exiting their positions.