I believe if you look at it I only had 1 share of ZIV at the time which I was doing at the time because I was trying to keep my trade record private from people who were not paying the subscription fee. However, now I am just using the “Delay Closed-Trade Reporting for Non-Subscribers” feature and calling it private enough. I can think of no situation where I would intentionally hold a significant portion of ZIV and TVIX at the same time. However, I could see a scenario where I held a mix of TVIX and a 3 times stock ETF.
Edit: Turns out this trade drawdown was wrong and was updated later. For more details check out this visit this thread: Can you Double Check My Drawdown?