INVESTOR AB SER. A revenue for the last year amounted to 59.64 B SEK, the most of which — 114.45 B SEK — came from its highest performing source at the moment, Listed Companies, the year earlier bringing -27.70 B SEK. The greatest contribution to the revenue figure was made by United States — last year it brought INVESTOR AB SER. A 35.89 B SEK, and the year before that — 31.29 B SEK.