Stem
STEM
72 hedge funds and large institutions have $17.2M invested in Stem in 2026 Q2 according to their latest regulatory filings, with 9 funds opening new positions, 16 increasing their positions, 19 reducing their positions, and 11 closing their positions.
118% more capital inflows, than outflows
Capital inflows: $4.14M | Capital outflows: $1.9M
83% more call options, than puts
Call options by funds: $922K | Put options by funds: $504K
1.53% more ownership
Funds ownership: 23.06% → 24.6% (+1.5%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
4% less funds holding
Funds holding: 75 → 72 (-3)
16% less repeat investments, than reductions
Existing positions increased: 16 | Existing positions reduced: 19
18% less first-time investments, than exits
New positions opened: 9 | Existing positions closed: 11
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Marshall Wace
London,
United Kingdom
|
+$1.06M |
| 2 |
Acadian Asset Management
Boston,
Massachusetts
|
+$594K |
| 3 |
LP
Longaeva Partners
Chicago,
Illinois
|
+$447K |
| 4 |
BNP Paribas Financial Markets
Paris,
France
|
+$371K |
| 5 |
BlackRock
New York
|
+$276K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Two Sigma Investments
New York
|
-$669K |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$261K |
| 3 |
Canada Pension Plan Investment Board
Toronto Ontario,
Ontario, Canada
|
-$188K |
| 4 |
VF
Virtu Financial
New York
|
-$166K |
| 5 |
CC
Centiva Capital
New York
|
-$132K |
STEM Hedge Fund Activity: Q2 2026 in Review
72 of the 8,351 institutional investors tracked by Wall St. Rank reported a position in Stem (STEM) for Q2 2026, worth a combined $17.2M — down 0.93% from $17.4M a quarter earlier.
Sellers outnumbered buyers: 11 funds closed out of STEM and 9 opened new positions — a net loss of 2 holders — while 19 trimmed existing stakes and 16 added.
The largest buyer was Marshall Wace, adding an estimated $1.06M. The largest seller was Two Sigma Investments, cutting an estimated $669K.
- 72 institutional investors held Stem (STEM) as of Q2 2026, down from 75 in Q1 2026.
- Funds reported $17.2M of Stem stock for Q2 2026, down 0.93% quarter-over-quarter.
- 9 funds opened new Stem positions in Q2 2026 and 11 closed out, a net change of -2 holders.
- The largest Stem buyer in Q2 2026 was Marshall Wace, an estimated $1.06M added.
- The largest Stem seller in Q2 2026 was Two Sigma Investments, an estimated $669K sold.
Based on aggregated 13F filings for Q2 2026.