As of Q2 2026, 1 SEC-registered investment managers reported holding MZZ (PROSHARES TR) in their latest 13F filings, with a combined reported value of $9 across 1 shares. That is +0.0% by share count (+0 shares) versus the previous quarter, while reported value moved -35.7%. Ownership is concentrated: the five largest holders account for 100.0% of reported value and the top ten for 100.0%.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.