US Treasury 12 Month Bill ETF
OBIL
65 hedge funds and large institutions have $192M invested in US Treasury 12 Month Bill ETF in 2025 Q4 according to their latest regulatory filings, with 7 funds opening new positions, 23 increasing their positions, 24 reducing their positions, and 5 closing their positions.
40% more first-time investments, than exits
New positions opened: 7 | Existing positions closed: 5
3% more funds holding
Funds holding: 63 → 65 (+2)
1% more capital invested
Capital invested by funds: $190M → $192M (+$2.59M)
4% less repeat investments, than reductions
Existing positions increased: 23 | Existing positions reduced: 24
1.44% less ownership
Funds ownership: 66.02% → 64.57% (-1.4%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
MSFS
Main Street Financial Solutions
Newtown,
Pennsylvania
|
+$2.1M |
| 2 |
Morgan Stanley
New York
|
+$1.91M |
| 3 |
UBS Group
Zurich,
Switzerland
|
+$1.83M |
| 4 |
Goldman Sachs
New York
|
+$1.81M |
| 5 |
EH
Equitable Holdings
New York
|
+$1.37M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
MML Investors Services
Springfield,
Massachusetts
|
-$3.02M |
| 2 |
Janney Montgomery Scott
Philadelphia,
Pennsylvania
|
-$1.37M |
| 3 |
FTUS
Flow Traders U.S.
New York
|
-$1.32M |
| 4 |
4WM
49 Wealth Management
Austin,
Texas
|
-$1.17M |
| 5 |
RCS
Retirement Capital Strategies
San Jose,
California
|
-$1.08M |
OBIL Hedge Fund Activity: Q4 2025 in Review
65 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in US Treasury 12 Month Bill ETF (OBIL) for Q4 2025, worth a combined $192M — up 1.4% from $190M a quarter earlier.
Buyers outnumbered sellers: 7 funds opened new OBIL positions and 5 closed out — a net gain of 2 holders — while 23 added to existing stakes and 24 trimmed.
The largest buyer was Main Street Financial Solutions, adding an estimated $2.1M. The largest seller was MML Investors Services, cutting an estimated $3.02M.
- 65 institutional investors held US Treasury 12 Month Bill ETF (OBIL) as of Q4 2025, up from 63 in Q3 2025.
- Funds reported $192M of US Treasury 12 Month Bill ETF stock for Q4 2025, up 1.4% quarter-over-quarter.
- 7 funds opened new US Treasury 12 Month Bill ETF positions in Q4 2025 and 5 closed out, a net change of +2 holders.
- The largest US Treasury 12 Month Bill ETF buyer in Q4 2025 was Main Street Financial Solutions, an estimated $2.1M added.
- The largest US Treasury 12 Month Bill ETF seller in Q4 2025 was MML Investors Services, an estimated $3.02M sold.
Based on aggregated 13F filings for Q4 2025.