Altus Power
AMPS
AMPS was delisted on the 15th of April, 2025.
50 hedge funds and large institutions have $541M invested in Altus Power in 2021 Q4 according to their latest regulatory filings, with 32 funds opening new positions, 7 increasing their positions, 7 reducing their positions, and 51 closing their positions.
438% more call options, than puts
Call options by funds: $3.53M | Put options by funds: $656K
200% more funds holding in top 10
Funds holding in top 10: 1 → 3 (+2)
65% more capital invested
Capital invested by funds: $328M → $541M (+$213M)
0% more repeat investments, than reductions
Existing positions increased: 7 | Existing positions reduced: 7
30% less funds holding
Funds holding: 71 → 50 (-21)
37% less first-time investments, than exits
New positions opened: 32 | Existing positions closed: 51
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Blackstone Inc
New York
|
+$292M |
| 2 |
VH
ValueAct Holdings
San Francisco,
California
|
+$40.5M |
| 3 |
LMGAM
Liberty Mutual Group Asset Management
Boston,
Massachusetts
|
+$30.4M |
| 4 |
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Toronto,
Ontario, Canada
|
+$23.8M |
| 5 |
TAM
Telemark Asset Management
Boston,
Massachusetts
|
+$20.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
ECP
Empyrean Capital Partners
Los Angeles,
California
|
-$30.4M |
| 2 |
Millennium Management
New York
|
-$16.8M |
| 3 |
HSBC Holdings
London,
United Kingdom
|
-$14.8M |
| 4 |
WAM
Weiss Asset Management
Boston,
Massachusetts
|
-$14.4M |
| 5 |
ACA
Arena Capital Advisors
Los Angeles,
California
|
-$13.8M |
AMPS Hedge Fund Activity: Q4 2021 in Review
50 of the 6,498 institutional investors tracked by Wall St. Rank reported a position in Altus Power (AMPS) for Q4 2021, worth a combined $541M — up 65% from $328M a quarter earlier.
Sellers outnumbered buyers: 51 funds closed out of AMPS and 32 opened new positions — a net loss of 19 holders — while 7 trimmed existing stakes and 7 added.
The largest buyer was Blackstone Inc, opening a new position worth an estimated $292M. The largest seller was Empyrean Capital Partners, exiting entirely with an estimated $30.4M sold.
- 50 institutional investors held Altus Power (AMPS) as of Q4 2021, down from 71 in Q3 2021.
- Funds reported $541M of Altus Power stock for Q4 2021, up 65% quarter-over-quarter.
- 32 funds opened new Altus Power positions in Q4 2021 and 51 closed out, a net change of -19 holders.
- The largest Altus Power buyer in Q4 2021 was Blackstone Inc, an estimated $292M added.
- The largest Altus Power seller in Q4 2021 was Empyrean Capital Partners, an estimated $30.4M sold.
Based on aggregated 13F filings for Q4 2021.