Stocks making the biggest moves after hours: Netflix, United Airlines, Western Alliance, Interactive Brokers and more

Find out which companies are making news in the after-hours trading.

Netflix -- Netflix's shares fell more than 10% after hours trading, and gained less than 1%. Netflix beat Wall Street estimates on revenue but missed per-share earnings. The company announced that it is delaying the full implementation of its crackdown on password sharing, originally planned for the 1st quarter.

Interactive Brokers - Interactive Brokers' shares fell 4% following the release of its quarterly results. According to Refinitiv, the company reported an adjusted earnings per share (EPS) of $1.35. This was below a consensus estimate ($1.41) of $1.41.

First Horizon National -- The shares gained 2% during extended trading. According to FactSet, the bank holding company reported adjusted earnings of 45c per share compared with a consensus estimate for 47c per share.

Western Alliance Bancorp - The regional bank has risen by nearly 15%. According to Refinitiv, the revenues for the last quarter were $552 million compared to analysts' expectations of $666 million. Investors are focusing on the stability and growth of deposits following the fallout that occurred in the financial sector last month.

Intuitive Surgery -- Shares rose 8% following Intuitive's announcement of a better-than-expected earnings. FactSet reports that the company's adjusted earnings per share were $1.23, compared to a consensus estimate per share of just $1.20. The company's revenue was $1.70 billion compared to $1.59 billion estimates. Revenue increased by 14% from a year earlier.