AGG's total assets are high

AGG's total assets are $80 billion! Converting it to Japanese yen would be about 10.8 trillion yen!
As a guideline, I think it is better to refrain from investing in stocks with total assets not exceeding 3 billion dollars. This is because there is a possibility that operations will be suspended for stocks for which assets have not been collected.
If you think so, it is conceivable that AGG's total assets have been collected sufficiently.