Understanding SPDR Series Trust SPDR S&P Biotech ETF's Unusual Options Activity

Shares of SPDR Series Trust SPDR S&P Biotech ETF XBI saw some unusual options activity on Tuesday. Following the unusual option alert, the stock price moved down to $123.17.

• Sentiment: BULLISH
• Option Type: TRADE
• Trade Type: PUT
• Expiration Date: 2021-09-17
• Strike Price: $115.00
• Volume: 5738
• Open Interest: 2570

Three Signs Of Unusual Options Activity

Extraordinarily large volume (compared to historical averages) is one indication of unusual options market activity. Volume refers to the total number of contracts traded over a given time period when discussing options market activity. Open interest is the number of unsettled contracts that have been traded but not yet closed by either counterparty. In other words, open interest represents the quantity of contracts that individual parties have written but not yet found a counterparty for (i.e. a buyer finding a seller, or a seller finding a buyer).

Another indicator of unusual options activity is the trading of a contract with an expiration date in the distant future. Additional time until a contract expires generally increases the potential for it to grow its time value and reach its strike price. It is important to consider time value because it represents the difference between the strike price and the value of the underlying asset.

Contracts with a strike price far from the underlying price are also considered unusual because they are defined as being "out of the money". This occurs when the underlying price is under the strike price on a call option, or above the strike price on a put option. These trades are made because the underlying asset value is expected to change dramatically in the future, and the buyer or seller can take advantage of a greater profit margin.

Understanding Sentiment

Options are "bullish" when a call is purchased at/near ask price or a put is sold at/near bid price. Options are "bearish" when a call is sold at/near bid price or a put is bought at/near ask price.

These observations are made without knowing the investor's true intent by purchasing these options contracts. The activity is suggestive of these strategies, but an observer cannot be sure if a bettor is playing the contract outright or if the options bettor is hedging a large underlying position in common stock. For the latter case, bullish options activity may be less meaningful than the exposure a large investor has on their short position in common stock.

Using These Options Strategies

Unusual options activity is an advantageous strategy that may greatly reward an investor if they are highly skilled, but for the less experienced trader, it should remain as another tool to make an educated investment decision while taking other observations into account.

For more information to understand options alerts, visit https://pro.benzinga.help/en/articles/1769505-how-do-i-understand-options-alerts