Semi annual reporting of earnings is not less transparency.

Companies can release updates on their businesses at any time. Some credit card companies release monthly charge-offs. Some Autos release monthly sales. Interim updates can be released at any time.

However, the majority of companies don't have a dramatic change in business every 90 days. I have worked for a few S&P 100 companies. The amount of effort necessary to meet this quarterly requirement is substantial.

Do I care if BRK, BAC, MSFT, etc? Report earnings every 90 days? I don't. CNBC might? They need advertising dollars. The 90 day period is arbitrary. So is 6 months. But the key is be open to ideas that may improve the life of everyone. Trump is just proposing to rethink how we do things? And yes in this instance I think 6 months is better than 3 months.