Robinhood was known for its "Invest for Free" brand campaign, which was a key part of its marketing strategy. Robinhood is a financial technology company that offers commission-free trading of stocks, options, cryptocurrencies, and exchange-traded funds (ETFs) through its mobile app and website. The "Invest for Free" campaign was designed to emphasize the company's core value proposition: providing a platform for people to invest in financial markets without incurring traditional brokerage fees or commissions. Here's an explanation of the campaign:

1. Commission-Free Trading: The central message of the campaign was that users could trade various financial assets on the Robinhood platform without paying the typical fees associated with traditional brokerages. This was a significant departure from the industry norm, where investors often had to pay per-trade commissions, which could add up over time.

2. Accessibility: The "Invest for Free" campaign aimed to make investing more accessible to a wider audience. By removing the barrier of high trading fees, Robinhood sought to attract both novice and experienced investors who were looking for a cost-effective way to invest in the stock market.

3. Empowerment: Robinhood's campaign also emphasized the idea of empowering individual investors. It positioned the company as a disruptor in the finance industry, challenging the traditional brokerage model and enabling everyday people to take control of their financial futures.

4. Simplicity: The campaign highlighted the simplicity of the Robinhood platform. It emphasized that users could easily sign up, deposit funds, and start trading within minutes, all without worrying about complex fee structures.

5. Mobile-First Approach: Robinhood's mobile app was a key part of its appeal. The campaign underscored the convenience of being able to trade from anywhere using a smartphone, making it more appealing to younger investors who prefer mobile technology.

6. Educational Resources: While the "Invest for Free" campaign primarily focused on the cost savings aspect, Robinhood also offered educational resources to help users make informed investment decisions. This combination of affordability and access to information was a key selling point.

It's worth noting that while the "Invest for Free" campaign was successful in attracting a large user base, Robinhood also faced criticism and regulatory challenges related to its business practices and the gamification of investing on its platform. The company's marketing efforts evolved over time to address these challenges, and its messaging did have changed in 2021. Therefore, we'd recommend checking the latest information and news about Robinhood's marketing campaigns to get the most up-to-date insights.