ProShares Trust UltraShort Lehman 7-10 Year Treasury
9 hedge funds and large institutions have $3.17M invested in ProShares Trust UltraShort Lehman 7-10 Year Treasury in 2026 Q1 according to their latest regulatory filings, with 3 funds opening new positions, 2 increasing their positions, 2 reducing their positions, and 3 closing their positions.
55% more capital invested
Capital invested by funds: $2.04M → $3.17M (+$1.13M)
11.43% more ownership
Funds ownership: 16.79% → 28.22% (+11%)
0% more funds holding
Funds holding: 9 → 9 (0)
0% more first-time investments, than exits
New positions opened: 3 | Existing positions closed: 3
0% more repeat investments, than reductions
Existing positions increased: 2 | Existing positions reduced: 2
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
+$673K |
| 2 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$401K |
| 3 |
Citadel Advisors
Miami,
Florida
|
+$235K |
| 4 |
Simplex Trading
Chicago,
Illinois
|
+$166K |
| 5 |
MSG
Main Street Group
Glen Allen,
Virginia
|
+$487 |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$388K |
| 2 |
Osaic Holdings
Scottsdale,
Arizona
|
-$4.43K |
| 3 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
-$1.93K |
| 4 |
UBS Group
Zurich,
Switzerland
|
-$1.15K |
| 5 |
Morgan Stanley
New York
|
-$44 |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
1
Citadel Advisors
Miami,
Florida
| $829K | +$235K | +10,633 | +41% |
|
|
2
Jane Street
New York
| $683K | +$673K | +30,368 | New |
|
|
3
Royal Bank of Canada
Toronto,
Ontario, Canada
| $547K | +$401K | +18,089 | +290% |
|
|
CA
4
Cumberland Advisors
Sarasota,
Florida
| $545K | – | – | – |
|
|
5
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
| $398K | -$388K | -17,513 | -50% |
|
|
6
Simplex Trading
Chicago,
Illinois
| $168K | +$166K | +7,479 | New |
|
7
Group One Trading
Chicago,
Illinois
| $2.25K | – | – | – |
|
|
MSG
8
Main Street Group
Glen Allen,
Virginia
| $495 | +$487 | +22 | New |
|
|
9
Morgan Stanley
New York
| $43 | -$44 | -2 | -67% |
|
|
10
Osaic Holdings
Scottsdale,
Arizona
| – | -$4.43K | -200 | Closed |
|
|
11
Qube Research & Technologies (QRT)
London,
United Kingdom
| – | -$1.93K | -87 | Closed |
|
|
12
UBS Group
Zurich,
Switzerland
| – | -$1.15K | -52 | Closed |
|
PST Hedge Fund Activity: Q1 2026 in Review
9 of the 8,134 institutional investors tracked by Wall St. Rank reported a position in ProShares Trust UltraShort Lehman 7-10 Year Treasury (PST) for Q1 2026, worth a combined $3.17M — up 55% from $2.04M a quarter earlier.
Fund positioning in PST was balanced in Q1 2026: 3 funds opened new positions, 3 closed out, 2 added to existing stakes and 2 trimmed.
The largest buyer was Jane Street, opening a new position worth an estimated $673K. The largest seller was Susquehanna International Group, cutting an estimated $388K.
- 9 institutional investors held ProShares Trust UltraShort Lehman 7-10 Year Treasury (PST) as of Q1 2026, unchanged from Q4 2025.
- Funds reported $3.17M of ProShares Trust UltraShort Lehman 7-10 Year Treasury stock for Q1 2026, up 55% quarter-over-quarter.
- 3 funds opened new ProShares Trust UltraShort Lehman 7-10 Year Treasury positions in Q1 2026 and 3 closed out, a net change of 0 holders.
- The largest ProShares Trust UltraShort Lehman 7-10 Year Treasury buyer in Q1 2026 was Jane Street, an estimated $673K added.
- The largest ProShares Trust UltraShort Lehman 7-10 Year Treasury seller in Q1 2026 was Susquehanna International Group, an estimated $388K sold.
Based on aggregated 13F filings for Q1 2026.