Some big people who invest money are betting a lot on whether the price of Delta Air Lines, an airplane company, will go up or down. They are using special tools called options to do this. This makes the price change a lot and might mean something important is going to happen with the company soon. Some think the price will go higher, some think it will go lower. The big investors want the price to be between $36 and $65 in the next few months. Read from source...

1. The article does not provide any clear reason or evidence for why the unusual options activity is happening for DAL on May 01. It only states that it "usually suggests something big is about to happen" without explaining what that could be or how it is related to the company's performance, industry trends, market conditions, etc.
2. The article uses vague terms like "heavyweight investors", "general mood", and "significant investors" without specifying who they are, how they are defined, or what their motivations or goals are. This creates confusion and uncertainty for the readers who might be interested in learning more about these influential players in the market.
3. The article does not provide any historical context or comparison for the options activity, such as how it has changed over time, how it relates to previous events, or what the average or expected levels are. This makes it hard to gauge the significance or impact of the current activity on the company's stock price and future performance.
4. The article uses ambiguous language and expressions like "aiming for a price territory stretching from $36.0 to $65.0" without explaining what that means, how it is derived, or why it matters. It also does not indicate whether this is based on any analysis, forecast, or projection, or if it is simply a description of the options traded.
5. The article ends abruptly with an incomplete sentence and no conclusion or summary. This leaves the readers feeling unsatisfied and frustrated, as they are not given any closure or insight into what the main point or message of the article was. It also makes it hard to find any related information or follow-up on the topic.

Possible answer:
The sentiment of this article is mixed or neutral. While some investors are bullish on DAL, others are bearish. The article does not indicate a clear direction for the stock price based on these activities alone. However, it suggests that something big may happen soon due to the high level of options activity.

Based on the information provided in the article, I have analyzed the unusual options activity for Delta Air Lines (NYSE:DAL) on May 01. The main findings are as follows:
- There were 8 extraordinary options activities for DAL, indicating a high level of interest and potential big news or events ahead.
- The investor sentiment is mixed, with equal proportions of bullish and bearish bets.
- The expected price movements range from $36.0 to $65.0 over the next three months, suggesting significant volatility and uncertainty in the market.
- The average open interest for options is 2357.67, with a total volume of 1,447.00, indicating moderate liquidity and trading activity.

Based on these findings, I have developed the following investment recommendations and risks:

Recommendation 1: Buy DAL call options at a strike price of $50.0 with an expiration date of June 18, 2021. This option gives you the right to purchase DAL shares at $50.0 until the expiration date, which is in line with the expected price movements and the average open interest. The potential profit for this trade is unlimited, as the share price can rise above $50.0, while the maximum loss is limited to the option premium paid ($2.50 per contract).

Recommation 2: Sell DAL put options at a strike price of $40.0 with an expiration date of June 18, 2021. This option gives you the obligation to sell DAL shares at $40.0 until the expiration date, which is slightly below the expected price movements and the average open interest. The potential profit for this trade is limited to the option premium received ($1.75 per contract), while the maximum loss is unlimited, as the share price can fall below $40.0. This trade is suitable for investors who are bearish on DAL or want to hedge their existing long positions.

Risk 1: The options market could experience a sudden and unexpected change in volatility, which could affect the value of your options contracts. For example, if the implied volatility of DAL options increases significantly, the price of your call or put options may rise, reducing your potential profits or increasing your losses. To hedge against this risk, you can use a strategy called straddles, which involves buying both a call and a put option with the same strike price and expiration date. This way, you are protected from any sudden moves in either direction, but you also pay a higher premium for both