Market Overview

On Sep 14, The U.S. major indexes closed as follows: Dow Jones declined 0.29% at 52,421.20; S&P 500 declined 0.48% at 7,619.98; NASDAQ declined 0.56% at 26,186.41.

According to MarketChameleon, the total trading volume of U.S. stock options on that day was 61,899,450, while the average daily option volume was 63,466,024. Puts accounted for 43% of the volume and calls for 57%.

Top 10 Option Volumes

Top 10: NVIDIA, Tesla Motors, AAPL, Micron Technology, Amazon.com, Cboe Volatility Index, Meta Platforms, Inc., Microsoft, Intel, SpaceX.

Nvidia Options Block Trades Signal Bearish Outlook

NVIDIA closed at USD 210.96, a decrease of 3.36 %. Options activity in NVDA was dominated by two unusually large trades. The largest was a cross-expiry call spread with a net credit of $25.48 million, structured entirely with out-of-the-money calls. The second was a $6.48 million short put. Together they suggest cautious positioning with a slightly bearish overall market read, where traders appear more focused on structured premium harvesting and risk-shaped exposure than on clean directional conviction.

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Large Trades

A cross-expiry call spread structure with a net credit of $25.48 million was the largest featured trade of the day, and it was built entirely with out-of-the-money calls against a $210.96 stock price. Specifically, the trader sold the November 20, 2026 $230 calls and sold the December 18, 2026 $300 calls, while buying the December 18, 2026 $245 calls and the November 20, 2026 $275 calls. Because this combination contains both buy calls and sell calls, it should be read as a spread strategy rather than a simple outright bullish bet, and its size is measured by the provided net credit of $25.48 million.

With all strikes above spot, the structure appears positioned to benefit from time decay and a managed move higher, while still limiting risk through the long call wings.

A put sale worth $6.48 million was the other standout trade, with the trader selling 4,500 contracts of the December 15, 2028 $150 put, which is out of the money versus the current $210.96 stock price. This is a single-leg short put, so the directional read is bullish: the seller is effectively betting NVDA stays above $150 over the long term, or at least does not fall enough to make the premium received insufficient compensation for the downside risk. Strategically, this kind of far-dated out-of-the-money put sale often reflects willingness to accumulate stock at a lower effective entry level while monetizing elevated option premium.

Overall, the big-money tone suggests cautious positioning with a slightly bearish overall market read, where traders appear more focused on structured premium harvesting and risk-shaped exposure than on clean directional conviction.

Micron's Major Options Trade Sends Bearish Signal

Micron Technology closed at 924.03 USD, down 5.25%. The combination of premium-selling upside calls and outright put buying suggests institutional participants remain cautious on MU’s near-term upside despite the stock’s current elevated level.

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Large Trades

A bear call spread collecting a $7.92 million net credit was the dominant large trade, with 7,200 November 20, 2026 $1,050 calls sold against 7,200 November 20, 2026 $1,100 calls bought. With MU referenced at $924.03, both strikes sit out of the money, and the structure clearly reflects a bearish-to-neutral stance that leans on premium collection.

The trader is effectively expressing the view that upside should remain capped below the short $1,050 strike by expiration, while the long $1,100 call defines risk and turns the position into a limited-risk call credit spread rather than naked call selling.

A PUT buy worth $145,300 targeted the September 18, 2026 $750 strike, with 2,828 contracts purchased. That strike is out of the money versus the $924.03 spot reference, making this a downside bet that would benefit from a meaningful pullback in MU before expiration. As a single-leg long put, it signals straightforward bearish positioning or portfolio protection, though its size was far smaller than the leading spread trade.

Overall, the large-trade pattern suggests institutional participants see limited near-term upside and are positioning for either consolidation below higher strikes or a downside move.

Disclaimer: This analysis is based on publicly available market data and is provided for informational purposes only. It does not constitute investment advice. Options trading involves substantial risk, and investors may lose more than their initial investment.