Vault-13

STEM INC STEM

COM NEW · Common Stock · CUSIP 85859N300

Energy software; Public Company

73 institutional holders -2 vs Q1 2026
2,203,0502.2m shares reported held*
22.9% of all shares outstanding*
$17.2mreported value*
10 new 16 added 19 reduced 11 sold out net bought ≈ $1.9m (+238.6k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($484 this quarter). Holder counts are more reliable. Shares outstanding: 9.6m as of 2026-08-05, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $7.81. Options: 5 managers hold calls ($922.4k notional), 3 hold puts ($503.7k).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q2 24: 1Q3 24: 1Q4 24: 1Q1 25: 1Q2 25: 81Q3 25: 85Q4 25: 86Q1 26: 75Q2 26: 7373Q2 24Q4 24Q2 25Q4 25Q2 26
Numbers
QuarterHolders
Q2 20241
Q3 20241
Q4 20241
Q1 20251
Q2 202581
Q3 202585
Q4 202586
Q1 202675
Q2 202673

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q3 24: 0 bought or addedQ3 24: 0 cut or sold outQ4 24: 0 bought or addedQ4 24: 1 cut or sold outQ4 24Q1 25: 0 bought or addedQ1 25: 0 cut or sold outQ2 25: 79 bought or addedQ2 25: 1 cut or sold outQ2 25Q3 25: 43 bought or addedQ3 25: 39 cut or sold outQ4 25: 37 bought or addedQ4 25: 43 cut or sold outQ4 25Q1 26: 25 bought or addedQ1 26: 42 cut or sold outQ2 26: 26 bought or addedQ2 26: 30 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 202400
Q4 202401
Q1 202500
Q2 2025791
Q3 20254339
Q4 20253743
Q1 20262542
Q2 20262630

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$10m$20m$30mQ3 25 calls: $20.6mQ3 25 puts: $10.4mQ3 25P/C 0.51Q4 25 calls: $7.7mQ4 25 puts: $6.3mQ4 25P/C 0.82Q1 26 calls: $1.7mQ1 26 puts: $1.1mQ1 26P/C 0.64Q2 26 calls: $922.4kQ2 26 puts: $503.7kQ2 26P/C 0.55
Numbers
QuarterCallsPutsP/C
Q3 2025$20.6m$10.4m0.51
Q4 2025$7.7m$6.3m0.82
Q1 2026$1.7m$1.1m0.64
Q2 2026$922.4k$503.7k0.55

Biggest buyers

MARSHALL WACE, LLP Added +114,268+114.3k
ACADIAN ASSET MANAGEMENT LLC Added +64,083+64.1k
Longaeva Partners L.P. New +48,186+48.2k
BNP PARIBAS FINANCIAL MARKETS Added +40,000+40.0k
BlackRock, Inc. Added +29,765+29.8k
CITADEL ADVISORS LLC New +23,727+23.7k
XTX Topco Ltd Added +19,310+19.3k
Trexquant Investment LP Added +18,964+19.0k
VANGUARD CAPITAL MANAGEMENT LLC Added +17,436+17.4k
PRICE T ROWE ASSOCIATES INC /MD/ Added +12,741+12.7k

Biggest sellers

TWO SIGMA INVESTMENTS, LP Reduced -72,155-72.2k
UBS Group AG Reduced -28,101-28.1k
CANADA PENSION PLAN INVESTMENT BOARD Sold out -21,300-21.3k
Virtu Financial LLC Sold out -18,753-18.8k
Centiva Capital, LP Sold out -14,967-15.0k
Susquehanna Portfolio Strategies, LLC Sold out -11,955-12.0k
MORGAN STANLEY Reduced -10,374-10.4k
BRIDGEWAY CAPITAL MANAGEMENT, LLC Reduced -10,000-10.0k
CITIGROUP INC Reduced -8,688-8.7k
GSA CAPITAL PARTNERS LLP Reduced -6,181-6.2k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $503.7k64.5k shares
CITADEL ADVISORS LLC Added $198.4k25.4k shares
IMC-Chicago, LLC Added $178.1k22.8k shares
GROUP ONE TRADING LLC Reduced $24.2k3.1k shares
SIMPLEX TRADING, LLC Reduced $18.0k2.3k shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $383.5k49.1k shares
IMC-Chicago, LLC New $104.7k13.4k shares
SIMPLEX TRADING, LLC Added $15.6k2.0k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
505Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 4 sellingQ1 25Q2 25: 0 buyingQ2 25: 3 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 2 sellingQ1 26: 0 buyingQ1 26: 4 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 5 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—4$42.1k—
Q2 20250—3$23.6k$9.9k
Q3 20250—0——
Q4 20250—2$229.2k—
Q1 20260—4$114.2k$4.4k
Q2 20260—0——
Q3 20260—5$46.1k—
DateInsiderTradeSharesPrice ValueTheir holding
2026-09-29 Carlson Michael James President, Managed Services Sold 146 $4.67 $682146 shares -1%
2026-07-20 Musfeldt Brian Chief Financial Officer Sold 996 $6.11 $6.1k996 shares -30%
2026-07-02 Narayanan Arun Chief Executive Officer Sold 1,996 $7.85 $15.7k2.0k shares -10%
2026-07-02 Carlson Michael James President, Managed Services Sold 1,347 $7.85 $10.6k1.3k shares -5%
2026-07-02 Tappin Matthew President, Software Products Sold 996 $7.85 $7.8k996 shares -9%
2026-07-02 Laureles Saul R. Chief Legal Officer Sold 675 $7.85 $5.3k675 shares -2%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 405,608405.6k $3.2m $3.2m 0.00% Added +114.3k +114,268
2 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 361,249361.2k $2.8m $2.8m 0.00% Added +17.4k +17,436
3 BlackRock, Inc. 0.00% of their portfolio New York, NY 164,477164.5k $1.3m $1.3m 0.00% Added +29.8k +29,765
4 Trexquant Investment LP 0.01% of their portfolio STAMFORD, CT 110,640110.6k $864.1k $864.1k 0.01% Added +19.0k +18,964
5 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 103,234103.2k $806.3k $806.3k 0.00% Reduced -72.2k -72,155
6 GSA CAPITAL PARTNERS LLP 0.05% of their portfolio LONDON, X0 102,321102.3k $799.0k $799.0k 0.05% Reduced -6.2k -6,181
7 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 93,09493.1k $727.1k $727.1k 0.00% Added +40.0k +40,000
8 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 93,01493.0k $726.8k $726.8k 0.00% Added +962 +962
9 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 74,64674.6k $579.0k $579.0k 0.00% Added +64.1k +64,083
10 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 66,48266.5k $519.2k $519.2k 0.00% Added +7.9k +7,907
11 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio HOUSTON, TX 59,60059.6k $465.5k $465.5k 0.01% Reduced -10.0k -10,000
12 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 56,89856.9k $444.4k $444.4k 0.00% Added +7.2k +7,180
13 Longaeva Partners L.P. 0.01% of their portfolio Chicago, IL 48,18648.2k $376.3k $376.3k 0.01% New
14 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 38,27838.3k $299.0k $299.0k 0.00% Reduced -1 -1
15 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 37,66137.7k $294.1k $294.1k 0.00% Reduced -10.4k -10,374
16 COHEN & STEERS, INC. 0.00% of their portfolio NEW YORK, NY 31,88731.9k $249.0k $249.0k 0.00% Unchanged
17 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 29,63629.6k $231.0k $231.0k 0.00% Added +1.4k +1,423
18 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 29,48229.5k $230.3k $230.3k 0.00% Added +19.3k +19,310
19 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 28,52628.5k $222.8k $222.8k 0.00% Reduced -8.7k -8,688
20 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 28,42428.4k $221.4k $221.4k 0.00% Unchanged
21 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 26,65526.7k $209.0k $209.0k 0.00% Added +12.7k +12,741
22 Keyframe Capital Partners, L.P. 100.00% of their portfolio New York, NY 25,92425.9k $202.5k $202.5k 100.00% Unchanged
23 UBS Group AG 0.00% of their portfolio ZURICH, V8 25,13225.1k $196.3k $196.3k 0.00% Reduced -28.1k -28,101
24 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 23,72723.7k $185.3k $185.3k 0.00% New
25 NOMURA HOLDINGS INC 0.00% of their portfolio TOKYO, M0 23,71323.7k $185.2k $185.2k 0.00% Unchanged
26 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 21,24121.2k $165.9k $165.9k 0.00% Added +2.6k +2,608
27 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 16,14716.1k $126.1k $126.1k 0.00% Unchanged
28 Engineers Gate Manager LP 0.00% of their portfolio NEW YORK, NY 12,70012.7k $99.2k $99.2k 0.00% New
29 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 11,38511.4k $88.9k $88.9k 0.00% Reduced -32 -32
30 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 11,34611.3k $88.6k $88.6k 0.00% New
31 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 9,7179.7k $75.9k $75.9k 0.00% New
32 Zweig-DiMenna Associates LLC 0.01% of their portfolio NEW YORK, NY 8,3028.3k $64.8k $64.8k 0.01% Unchanged
33 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 4,6304.6k $36.2k $36.2k 0.00% Added +1.1k +1,053
34 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 4,0544.1k $31.7k $31.7k 0.00% Reduced -994 -994
35 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 3,4873.5k $27.2k $27.2k 0.00% Added +1.0k +1,000
36 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 2,8522.9k $22.3k $22.3k 0.00% Unchanged
37 INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio ORLANDO, FL 1,8701.9k $14.8k $14.8k 0.00% Reduced -30 -30
38 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 1,0801.1k $8.4k $8.4k 0.00% Unchanged
39 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 840840 $6.6k $6.6k 0.00% New
40 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 712712 $5.3k $5.3k 0.00% New
41 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 703703 $5.5k $5.5k 0.00% Reduced -120 -120
42 FMR LLC 0.00% of their portfolio BOSTON, MA 648648 $5.1k $5.1k 0.00% Reduced -190 -190
43 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 514514 $4.0k $4.0k 0.00% Reduced -470 -470
44 Rockefeller Capital Management L.P. 0.00% of their portfolio NEW YORK, NY 392392 $3.1k $3.1k 0.00% Reduced -10 -10
45 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 347347 $2.7k $2.7k 0.00% Unchanged
46 Hurley Capital, LLC 0.00% of their portfolio NEW YORK, NY 245245 $1.9k $1.9k 0.00% Unchanged
47 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 199199 $1.6k $1.6k 0.00% Unchanged
48 CKW FINANCIAL GROUP 0.00% of their portfolio HONOLULU, HI 192192 $2.0k $2.0k 0.00% Unchanged
49 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 167167 $1.3k $1.3k 0.00% New
50 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 149149 $1.2k $1.2k 0.00% Added +1 +1
51 GAMMA Investing LLC 0.00% of their portfolio FOSTER CITY, CA 120120 $937 $937 0.00% Reduced -82 -82
52 Cornerstone Financial Management LLC 0.00% of their portfolio BURLINGTON, MA 6666 $515 $515 0.00% Unchanged
53 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 6262 $484 $484 0.00% Unchanged
54 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 6060 $469 $469 0.00% Reduced -6 -6
55 HARBOUR INVESTMENTS, INC. 0.00% of their portfolio MADISON, WI 5757 $445 $445 0.00% Unchanged
56 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 5050 $391 $391 0.00% Unchanged
57 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 3636 $265 $265 0.00% Reduced -60 -60
58 Wilmington Savings Fund Society, FSB 0.00% of their portfolio WILMINGTON, DE 3535 $273 $273 0.00% Unchanged
59 HM PAYSON & CO 0.00% of their portfolio PORTLAND, ME 2525 $196 $196 0.00% Unchanged
60 CoreCap Advisors, LLC 0.00% of their portfolio SOUTHFIELD, MI 2525 $195 $195 0.00% Unchanged
61 Quent Capital, LLC 0.00% of their portfolio NEW YORK, NY 2525 $195 $195 0.00% Unchanged
62 Strategic Investment Solutions, Inc. /IL 0.00% of their portfolio ORLAND PARK, IL 2525 $195 $195 0.00% Unchanged
63 American Capital Advisory, LLC 0.00% of their portfolio KETCHUM, ID 2424 $188 $188 0.00% New
64 Strategic Wealth Partners, Ltd. 0.00% of their portfolio INDEPENDENCE, OH 1919 $148 $148 0.00% Unchanged
65 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 1212 $94 $94 0.00% Reduced -40 -40
66 Integrated Wealth Concepts LLC 0.00% of their portfolio WALTHAM, MA 1212 $94 $94 0.00% New
67 Dogwood Wealth Management LLC 0.00% of their portfolio LENEXA, KS 1111 $86 $86 0.00% Unchanged
68 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 1010 $78 $78 0.00% Unchanged
69 MATHER GROUP, LLC. 0.00% of their portfolio CHICAGO, IL 1010 $78 $78 0.00% Unchanged
70 Ascentis Wealth Management, LLC 0.00% of their portfolio DALLAS, TX 77 $54 $54 0.00% Unchanged
71 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 55 $39 $39 0.00% Reduced -1.5k -1,473
72 Smallwood Wealth Investment Management, LLC 0.00% of their portfolio RED BANK, NJ 22 $15 $15 0.00% Unchanged
73 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 11 $8 $8 0.00% Unchanged