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I. Overview of U.S. Stock Index Options
The trading volume in the current U.S. stock index options market has declined, with the put/call ratio also decreasing, indicating some withdrawal of short positions.

Options expiring today: $S&P 500 Index (.SPX.US)$ The distribution of trading volumes for Call and Put options shows divergence, with the peak of Put options at 6755 points and the peak of Call options at 6850 points.

Options expiring today: $NASDAQ 100 Index (.NDX.US)$ The peak trading volume for Call options is at 25700, while the peak for Put options is at 25400 points.

2. US Stock Options Trading Leaders
1、 $Palantir (PLTR.US)$ The previous trading day saw an increase of 8.81%. The put/call ratio slightly rose from the prior day, while trading volume marginally declined.

Observing the call options expiring this Friday, several contracts surged over fourfold.

Monitoring unusual large option trades, major investors remained predominantly bullish just before the market close.

2、 $NVIDIA (NVDA.US)$ The previous trading day saw an increase of 5.79%. The put/call ratio slightly rose from the prior day, while trading volume marginally declined.

Observe the call options expiring this Friday, with several seeing an increase of over 200%.

Monitoring unusual large option trades, major investors predominantly took bearish positions just before the market close.

Top 10 Most Actively Traded US Stock Options

Top ten US stocks by implied volatility ranking (market cap > $10 billion and option trading volume > $100,000).

3. US ETF Options Trading Volume Rankings
Top Ten Rankings of ETF Options Trading Volume in the US Stock Market

Top Ten Implied Volatility Rankings of U.S. Stock ETFs (Criteria: Market Capitalization > $10 billion)

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Risk Factors
An option is a contract that grants the holder the right, but not the obligation, to buy or sell an asset at a fixed price on a specific date or at any time before that date. The price of an option is influenced by various factors, including the current price of the underlying asset, the strike price, the time to expiration, andImplied Volatility。
Implied VolatilityIt reflects the market's expectation of volatility in options over a certain period. This data is derived inversely from the BS option pricing model and is generally regarded as an indicator of market sentiment. When investors anticipate greater volatility, they may be more willing to pay higher prices for options to hedge risks, thereby leading to a higherImplied Volatility。
Traders and investors useImplied Volatilityto evaluateoption pricethe attractiveness, identify potential mispricing, and manage risk exposure.
Disclaimer
This content does not constitute any offer, solicitation, recommendation, opinion, or guarantee regarding securities, financial products, or tools. The risk of loss in trading options can be substantial. Under certain circumstances, the losses you incur may exceed the initial margin amount deposited. Even if you set contingency orders, such as “stop-loss” or “limit” orders, they may not prevent losses. Market conditions may make it impossible to execute such orders. You may be required to deposit additional margin within a short period. If you fail to provide the required amount within the specified time, your open positions may be liquidated. Nevertheless, you will remain responsible for any shortfall in your account resulting from such liquidation. Therefore, before engaging in trading, you should thoroughly study and understand options and carefully consider whether such trading is suitable for you based on your financial situation and investment objectives. If you trade options, you should be familiar with the procedures for exercising options and the rights and obligations associated with exercising options and their expiration.
Editor/Lee