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Stem
STEM

85 hedge funds and large institutions have $34.4M invested in Stem in 2025 Q3 according to their latest regulatory filings, with 24 funds opening new positions, 20 increasing their positions, 20 reducing their positions, and 20 closing their positions.

New
Increased
Maintained
Reduced
Closed

242% more capital invested

Capital invested by funds: $10.1M → $34.4M (+$24.3M)

97% more call options, than puts

Call options by funds: $20.6M | Put options by funds: $10.4M

22.76% more ownership

Funds ownership: 0.65% → 23.41% (+23%)

20% more first-time investments, than exits

New positions opened: 24 | Existing positions closed: 20

5% more funds holding

Funds holding: 81 → 85 (+4)

0% more repeat investments, than reductions

Existing positions increased: 20 | Existing positions reduced: 20

Holders
85
Holders Change
+4
Holders Change %
+4.94%
% of All Funds
1.12%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.01%
New
24
Increased
20
Reduced
20
Closed
20
Calls
$20.6M
Puts
$10.4M
Net Calls
+$10.1M
Net Calls Change
+$7.05M

Top Buyers

Rank Fund Capital Flow
1
Marshall Wace
Marshall Wace
United Kingdom
+$3.02M
2
Bank of America
Bank of America
North Carolina
+$1.57M
3
Two Sigma Investments
Two Sigma Investments
New York
+$1.09M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
+$740K
5
Citadel Advisors
Citadel Advisors
Florida
+$627K

Top Sellers

Rank Fund Capital Flow
1
Jane Street
Jane Street
New York
-$620K
2
BlackRock
BlackRock
New York
-$543K
3
Millennium Management
Millennium Management
New York
-$535K
4
Citigroup
Citigroup
New York
-$352K
5
AQR Capital Management
AQR Capital Management
Connecticut
-$302K
Name Holding Trade Value Shares
Change 		Change in
Stake
GI
51
GAMMA Investing
California
$4.21K +$3.39K +240 New
CFG
52
CKW Financial Group
Hawaii
$4K – – –
TRCT
53
Tower Research Capital (TRC)
New York
$3.5K -$39.6K -2,802 -93%
Jones Financial Companies
54
Jones Financial Companies
Missouri
$2.66K +$1.75K +124 +496%
SS
55
SBI Securities
Japan
$2.61K -$707 -50 -25%
CA
56
Clearstead Advisors
Ohio
$2.54K – – –
HI
57
Harbour Investments
Wisconsin
$2.02K +$1.58K +112 +3,733%
Federated Hermes
58
Federated Hermes
Pennsylvania
$1.72K +$1.39K +98 New
NFSG
59
Newbridge Financial Services Group
Florida
$1.68K +$382 +27 +39%
Optiver Holding
60
Optiver Holding
Netherlands
$1.52K – – –
US Bancorp
61
US Bancorp
Minnesota
$1.17K -$127 -9 -12%
AF
62
Allworth Financial
California
$912 – – –
Nisa Investment Advisors
63
Nisa Investment Advisors
Missouri
$876 – – –
ASN
64
Advisory Services Network
Georgia
$876 +$707 +50 New
MCM
65
MAI Capital Management
Ohio
$649 – – –
SIS
66
Strategic Investment Solutions
Illinois
$648 – – –
WSFS
67
Wilmington Savings Fund Society
Delaware
$613 +$495 +35 New
Barclays
68
Barclays
United Kingdom
$578 -$121K -8,556 -100%
CA
69
CoreCap Advisors
Michigan
$438 – – –
HPC
70
HM Payson & Co
Maine
$438 – – –
Northwestern Mutual Wealth Management
71
Northwestern Mutual Wealth Management
Wisconsin
$438 – – –
PPA
72
Pilgrim Partners Asia
Singapore
$438 +$353 +25 New
Comerica Bank
73
Comerica Bank
Texas
$350 – – –
DZ Bank
74
DZ Bank
Germany
$350 +$283 +20 New
DWM
75
Dogwood Wealth Management
Kansas
$193 – – –
1 2
3
4 5

STEM Hedge Fund Activity: Q3 2025 in Review

85 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Stem (STEM) for Q3 2025, worth a combined $34.4M — up 242% from $10.1M a quarter earlier.

Buyers outnumbered sellers: 24 funds opened new STEM positions and 20 closed out — a net gain of 4 holders — while 20 added to existing stakes and 20 trimmed.

The largest buyer was Marshall Wace, adding an estimated $3.02M. The largest seller was Jane Street, exiting entirely with an estimated $620K sold.

  • 85 institutional investors held Stem (STEM) as of Q3 2025, up from 81 in Q2 2025.
  • Funds reported $34.4M of Stem stock for Q3 2025, up 242% quarter-over-quarter.
  • 24 funds opened new Stem positions in Q3 2025 and 20 closed out, a net change of +4 holders.
  • The largest Stem buyer in Q3 2025 was Marshall Wace, an estimated $3.02M added.
  • The largest Stem seller in Q3 2025 was Jane Street, an estimated $620K sold.

Based on aggregated 13F filings for Q3 2025.