9 institutions reported holding $9.9M of PROSHARES TR II (YCS) in SEC 13F filings for 2026-03-31. Largest institutional holders: CITADEL ADVISORS LLC ($4.4M), NKCFO LLC ($3.4M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($1.4M), JANE STREET GROUP, LLC ($706,912), MORGAN STANLEY ($10,596). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $4.4M | 83,901 | Added |
| 2 | NKCFO LLC | $3.4M | 63,750 | Trimmed |
| 3 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.4M | 25,700 | Added |
| 4 | JANE STREET GROUP, LLC | $706,912 | 13,343 | Added |
| 5 | MORGAN STANLEY | $10,596 | 200 | Hold |
| 6 | OSAIC HOLDINGS, INC. | $53 | 1 | Hold |
| 7 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
| 8 | Estate Planners Group, LLC | $0 | 0 | Exited |
| 9 | UBS Group AG | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31