Threw some money from Thinkorswim into Schwab Money Market, but I don’t understand the dividend situation.

Want to wait a few weeks till things calm down to invest it, so put it in SWVXX, which I think is paying .7%, but other places say .4. And the Nasdaq etf list shows it has no dividend history, while Ycharts shows .7%

https://ycharts.com/mutual_funds/M:SWVXX/dividend_yield

I just don't want to sell it the day before some dividend would have been paid. Could someone explain when and if that happens?