MYY · ProShares Short MidCap400 ETF
$15.32
-0.03 (-0.20%)
At close · Sep 4
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 4
Total Value: $446,287
Total Shares: 26,053
Institutional Ownership Trend
25 quarters
Holder Concentration
Across 4 13F filers · Δ vs Dec 31, 2025Top Holder
84.7%
−15.3 pts
Top 5
100.0%
0.0 pts
Top 10
100.0%
0.0 pts
HHI
7,407
Highly concentrated−2,583
Quarterly Activity
vs Dec 31, 2025
New
1
Increased
0
Decreased
2
Sold Out
0
Unchanged
1
Holder count:
+1
Institutional value:
+236.2%
Shares held:
+243.8%
Top Buyers
vs Dec 31, 2025No qualifying movers this quarter.
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid Tower Research Capital LLC (TRC) | −3,587 | 3,986 | |
| Mega MORGAN STANLEY | −2 | 1 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | 22,065 | $377,973 |
Top Sold-Out Positions
vs Dec 31, 2025No fully closed positions this quarter.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP MYY | $377,973 | 84.69% | 22,065 | Shares | 2026-05-15 | |
| Mid Tower Research Capital LLC (TRC) MYY | $68,280 | 15.30% | 3,986 | Shares | 2026-05-15 | |
| Mega MORGAN STANLEY MYY | $17 | 0.00% | 1 | Shares | 2026-05-15 | |
| Mega WELLS FARGO & COMPANY/MN MYY | $17 | 0.00% | 1 | Shares | 2026-05-11 |