I want to sell a broad market mutual fund to harvest tax losses, but I put a small amount of money in the fund a few days before the tariff announcements. Would having invested in the security at all less than 30 days before selling disqualify me from taking the tax loss, or could I still claim the loss except for the small amount invested within the 30 days. I'm at Schwab and wondering if anyone knows how they calculate this in particular as well.