HealthStream
HSTM
191 hedge funds and large institutions have $488M invested in HealthStream in 2025 Q4 according to their latest regulatory filings, with 24 funds opening new positions, 71 increasing their positions, 70 reducing their positions, and 30 closing their positions.
1% more repeat investments, than reductions
Existing positions increased: 71 | Existing positions reduced: 70
0.71% less ownership
Funds ownership: 71.97% → 71.26% (-0.71%)
5% less funds holding
Funds holding: 200 → 191 (-9)
19% less capital invested
Capital invested by funds: $603M → $488M (-$116M)
20% less first-time investments, than exits
New positions opened: 24 | Existing positions closed: 30
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Acadian Asset Management
Boston,
Massachusetts
|
+$2.66M |
| 2 |
Jane Street
New York
|
+$1.57M |
| 3 |
Two Sigma Advisers
New York
|
+$1.55M |
| 4 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$1.53M |
| 5 |
Two Sigma Investments
New York
|
+$1.44M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
-$11.3M |
| 2 |
Renaissance Technologies
New York
|
-$4.32M |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$2.92M |
| 4 |
SWGC
Summit Wealth Group (Colorado)
Colorado Springs,
Colorado
|
-$1.5M |
| 5 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
-$1.3M |
HSTM Hedge Fund Activity: Q4 2025 in Review
191 of the 8,270 institutional investors tracked by Wall St. Rank reported a position in HealthStream (HSTM) for Q4 2025, worth a combined $488M — down 19% from $603M a quarter earlier.
Sellers outnumbered buyers: 30 funds closed out of HSTM and 24 opened new positions — a net loss of 6 holders — while 70 trimmed existing stakes and 71 added.
The largest buyer was Acadian Asset Management, adding an estimated $2.66M. The largest seller was Vanguard Group, cutting an estimated $11.3M.
- 191 institutional investors held HealthStream (HSTM) as of Q4 2025, down from 200 in Q3 2025.
- Funds reported $488M of HealthStream stock for Q4 2025, down 19% quarter-over-quarter.
- 24 funds opened new HealthStream positions in Q4 2025 and 30 closed out, a net change of -6 holders.
- The largest HealthStream buyer in Q4 2025 was Acadian Asset Management, an estimated $2.66M added.
- The largest HealthStream seller in Q4 2025 was Vanguard Group, an estimated $11.3M sold.
Based on aggregated 13F filings for Q4 2025.