Stem
STEM
73 hedge funds and large institutions have $17.2M invested in Stem in 2026 Q2 according to their latest regulatory filings, with 10 funds opening new positions, 16 increasing their positions, 19 reducing their positions, and 11 closing their positions.
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)
1% less capital invested
Capital invested by funds: $17.4M → $17.2M (-$162K)
9% less first-time investments, than exits
New positions opened: 10 | Existing positions closed: 11
3% less funds holding
Funds holding: 75 → 73 (-2)
16% less repeat investments, than reductions
Existing positions increased: 16 | Existing positions reduced: 19
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
73 of the 8,305 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 10 opened new positions — a net loss of 1 holder — 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.
- 73 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.
- 10 funds opened new Stem positions in Q2 2026 and 11 closed out, a net change of -1 holder.
- 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.