As of midday Friday, Meta ( META ) shares were up more than 20%, adding $208 billion to its market capitalization. If the firm can hold on to those gains, it will post the largest ever one-day jump in market value.

To put that in perspective:

• America’s five largest airlines—Delta ( DAL ), Southwest ( LUV ), United ( UAL ), American ( AAL ), and Alaska ( ALK )—have a combined market value of about $71 billion. The world’s 20 largest airlines are cumulatively valued at $210 billion.
• America’s five largest homebuilders—D.R. Horton ( DHI ), Lennar ( LEN ), NVR ( NVR ), Pultegroup ( PHM ), and Toll Brothers ( TOL )—are valued at $148 billion.
• Starbucks ( SBUX ) and Airbnb ( ABNB )—America’s 87th and 103rd most valuable companies, respectively—have a combined market cap of about $200 billion.
• Only 33 companies in the S&P 500—excluding Meta—have a market cap larger than its gains today.

Before today, Apple ( AAPL ) held the record for the largest single-day gain. It added $190.9 billion in market cap on Nov. 10, 2022, after a better-than-expected inflation report sent U.S. equities soaring.

Rounding out the top three is Amazon ( AMZN ), which tacked on $190.8 billion on Feb. 4, 2022, after an upbeat quarterly earnings report.