¬†Understanding Public Companies’ Earnings: Key Metrics and Their Impact on Share Prices


Public companies regularly report their financial performance to shareholders, investors, and regulators. These reports, known as earnings releases, play a vital role in shaping the financial markets and driving stock prices. In this article, we will discuss the key components of earnings for public companies, including earnings per share (EPS), sales revenue, and guidance. We will also explore the impact of various factors on share prices, such as new product announcements, buyouts, and acquisitions. Lastly, we will provide real-life examples of how earnings can impact stock prices in different ways.

Earnings for Public Companies

Earnings Per Share (EPS)

Earnings per share is a widely used metric to gauge a company’s profitability. It represents the portion of a company’s profit allocated to each outstanding share of common stock. Higher EPS values typically indicate better financial health, making the company more attractive to investors.

Sales Revenue

Sales revenue refers to the income a company generates from the sale of its goods or services. It is the primary source of a company’s earnings and serves as a crucial indicator of the company’s financial performance. Strong sales revenue growth can positively impact a company’s stock price, as investors perceive the business as growing and thriving.


Guidance is an estimate provided by a company’s management regarding its expected future financial performance. This can include projections for revenue, earnings, and other key performance indicators (KPIs). Guidance helps investors make informed decisions, and significant deviations from guidance can lead to stock price fluctuations.

Factors Affecting Share Prices During Earnings Calls


New stock or debt offerings can influence a company’s share price. When a company issues additional shares, it may dilute the value of existing shares, leading to a decrease in stock price. Conversely, a stock buyback, where the company repurchases its own shares, can increase the stock price by reducing the number of shares outstanding.

New Products

The announcement of new products or services can impact a company’s share price. If investors believe that a new product will generate significant revenue or capture market share, it can lead to an increase in the stock price. However, if the market perceives the new product as underwhelming or uncompetitive, the stock price may decline.

Buyouts and Acquisitions

Buyouts and acquisitions can affect the stock prices of both the acquiring and target companies. The acquiring company’s stock price may rise if the market perceives the acquisition as strategically beneficial and value-accretive. Conversely, the target company’s stock price may increase as well, as investors anticipate a premium paid for the acquisition.

Example 1: Apple Inc. (Good Results and Stock Price Increase)

In January 2021, Apple Inc. reported its Q1 earnings, which exceeded market expectations. The company’s earnings per share stood at $1.68, surpassing the forecast of $1.41. Apple’s revenue reached $111.4 billion, marking a 21% year-over-year growth. These strong results were driven by the successful launch of the iPhone 12 series and the growth of Apple’s services segment. Following the earnings release, Apple’s stock price increased by more than 3%, reflecting the positive market sentiment.

Example 2: Netflix Inc. (Good Results, but Stock Price Decline)

In April 2021, Netflix Inc. reported its Q1 earnings, which included strong growth in revenue and earnings per share. The company’s revenue rose by 24% year-over-year to $7.16 billion, and its EPS reached $3.75, beating the market consensus of $2.97. However, Netflix’s subscriber growth fell short of expectations, with the company adding 3.98 million new subscribers against the projected 6.29 million. This underperformance led to concerns about the company’s future growth prospects. Despite the strong financial performance, Netflix’s stock price declined by nearly 8% following the earnings release, illustrating the importance of meeting market expectations for key performance indicators.

Example 3: Tesla Inc. (Bad Earnings, but Stock Price Increase)

In October 2019, Tesla Inc. reported its Q3 earnings, which missed market expectations. The company’s earnings per share stood at $1.86, lower than the anticipated $1.91, and its revenue reached $6.3 billion, falling short of the projected $6.45 billion. Despite these disappointing results, Tesla managed to deliver a record number of vehicles during the quarter and showed improvements in its operating margins. This led investors to believe that the company was on the right track for future growth. Following the earnings release, Tesla’s stock price increased by more than 17%, demonstrating that market sentiment can sometimes outweigh poor financial performance.

Example 4: General Electric Co. (Bad Earnings and Stock Price Decline)

In October 2018, General Electric Co. reported its Q3 earnings, which were below market expectations. The company’s earnings per share came in at $0.14, significantly lower than the forecasted $0.20. Additionally, its revenue dropped by 4% year-over-year to $29.6 billion, which was also below expectations. These poor results were attributed to challenges faced by the company’s power and renewable energy divisions. The market reacted negatively to the weak financial performance, and General Electric’s stock price declined by more than 8% following the earnings release, reflecting the concerns over the company’s future prospects.


Understanding the earnings of public companies is essential for investors looking to make informed decisions. Key components such as EPS, sales revenue, and guidance play a significant role in shaping the stock prices of these companies. Furthermore, factors like offerings, new products, and acquisitions during earnings calls can also impact share prices. Staying informed about these factors can help investors navigate the dynamic financial markets and make better investment decisions. The real-life examples of Apple Inc. and Netflix Inc. demonstrate how earnings can impact stock prices differently, highlighting the importance of market expectations and key performance indicators in shaping investor sentiment.