The spill of oil by Neon Oil Corporation tanker in the ocean around Australia could impact the stock price in the following ways:
1. **Decrease**: Typically, when a company is involved in an environmental incident such as an oil spill, it can lead to negative publicity and potential financial liabilities. Investors may perceive this event as damaging to the company's reputation and financial health, causing them to sell their shares, thus leading to a decrease in the stock price.
2. **Fluctuate**: In some cases, the stock price may not immediately decrease but instead fluctuate in response to the news of the oil spill. Uncertainty about the extent of the environmental impact, regulatory actions, and financial repercussions can cause fluctuations in the stock price as investors assess the situation.
Therefore, in this scenario, the most likely impact on the share price of Neon Oil Corporation stock would be a **decrease** initially due to the negative implications of the oil spill. It's essential for investors to closely monitor the developments surrounding the incident to make informed decisions about their investments.