STEM
Stem, Inc.Company with tickers: STEM
CIK
1758766
CUSIP
85859N300
Shares Outstanding
8,956,953
13F Activity (30d)
52 filings
49 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 78
Total Value: $19,851,107
Total Shares: 2,245,605
Institutional Ownership Trend
Holder Concentration
Across 78 13F filers · Δ vs Dec 31, 2025Top Holder
15.3%
−6.3 pts
Top 5
49.8%
−1.5 pts
Top 10
69.0%
+3.5 pts
HHI
684
Broadly held
−160
Quarterly Activity
vs Dec 31, 2025
New
12
Increased
16
Decreased
24
Sold Out
27
Unchanged
26
Holder count:
-15
Institutional value:
-50.5%
Shares held:
-15.7%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large MARSHALL WACE, LLP | +124,093 | 291,340 | |
| Mega TWO SIGMA INVESTMENTS, LP | +90,290 | 175,389 | |
| Large Trexquant Investment LP | +66,100 | 91,676 | |
| Large RENAISSANCE TECHNOLOGIES LLC | +47,375 | 58,575 | |
| Mega BNP PARIBAS ARBITRAGE, SA | +33,712 | 53,094 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | −403,493 | 173,300 | |
| Mega CITADEL ADVISORS LLC | −17,970 | 37,500 | |
| Mid Susquehanna Portfolio Strategies, LLC | −14,826 | 11,955 | |
| Mega WELLS FARGO & COMPANY/MN | −8,069 | 3,577 | |
| Mid XTX Topco Ltd | −4,407 | 10,172 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 343,813 | $3,039,306 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 49,718 | $439,507 | |
| Mid Virtu Financial LLC | 18,753 | $165,776 | |
| Large Centiva Capital, LP | 14,967 | $132,308 | |
| Mega Vanguard Global Advisers, LLC | 2,852 | $25,211 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 396,383 | $5,965,562 | |
| Large Belvedere Trading LLC | 76,400 | $1,149,820 | |
| Mega JANE STREET GROUP, LLC | 37,930 | $570,846 | |
| Mega GOLDMAN SACHS GROUP INC | 35,738 | $537,856 | |
| Mid Jump Financial, LLC | 35,500 | $534,275 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $3,039,306 | 15.31% | 343,813 | Shares | Defined | 2026-05-15 | ||||
| Large MARSHALL WACE, LLP | $2,575,444 | 12.97% | 291,340 | Shares | Other | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $1,550,438 | 7.81% | 175,389 | Shares | Sole | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,265,004 | 6.37% | 143,100 | Call | Other | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $1,190,852 | 6.00% | 134,712 | Shares | Sole | 2026-05-13 | ||||
| Mid GSA CAPITAL PARTNERS LLP | $959,157 | 4.83% | 108,502 | Shares | Sole | 2026-05-08 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $813,739 | 4.10% | 92,052 | Shares | Defined | 2026-05-15 | ||||
| Large Trexquant Investment LP | $810,415 | 4.08% | 91,676 | Shares | Sole | 2026-05-15 | ||||
| Small CSS LLC/IL | $618,800 | 3.12% | 70,000 | Put | Sole | 2026-05-15 | ||||
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | $615,264 | 3.10% | 69,600 | Shares | Sole | 2026-05-15 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $517,803 | 2.61% | 58,575 | Shares | Sole | 2026-05-14 | ||||
| Mega UBS Group AG | $470,579 | 2.37% | 53,233 | Shares | Defined | 2026-05-05 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $469,350 | 2.36% | 53,094 | Shares | Defined | 2026-05-12 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $439,507 | 2.21% | 49,718 | Shares | Defined | 2026-05-08 | ||||
| Mega MORGAN STANLEY | $424,627 | 2.14% | 48,035 | Shares | Defined | 2026-05-15 | ||||
| Mega STATE STREET CORP | $338,386 | 1.70% | 38,279 | Shares | Defined | 2026-05-15 | ||||
| Mega CITIGROUP INC | $328,971 | 1.66% | 37,214 | Shares | Defined | 2026-05-11 | ||||
| Large COHEN & STEERS, INC. | $281,881 | 1.42% | 31,887 | Shares | Sole | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $266,968 | 1.34% | 30,200 | Put | Other | 2026-05-15 | ||||
| Mega HSBC HOLDINGS PLC | $251,268 | 1.27% | 28,424 | Shares | Defined | 2026-04-30 | ||||
| Mega ROYAL BANK OF CANADA Bank | $249,402 | 1.26% | 28,213 | Shares | Defined | 2026-05-15 | ||||
| Micro Keyframe Capital Partners, L.P. | $229,168 | 1.15% | 25,924 | Shares | Sole | 2026-05-28 | ||||
| Large NOMURA HOLDINGS INC | $209,622 | 1.06% | 23,713 | Shares | Defined | 2026-05-15 | ||||
| Mega CANADA PENSION PLAN INVESTMENT BOARD Pension | $188,292 | 0.95% | 21,300 | Shares | Sole | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $179,452 | 0.90% | 20,300 | Put | Defined | 2026-05-15 | ||||
| Mid Virtu Financial LLC | $165,776 | 0.84% | 18,753 | Shares | Defined | 2026-05-14 | ||||
| Mega NORTHERN TRUST CORP Bank | $164,715 | 0.83% | 18,633 | Shares | Defined | 2026-05-14 | ||||
| Mega CITADEL ADVISORS LLC | $152,048 | 0.77% | 17,200 | Call | Defined | 2026-05-15 | ||||
| Large HighTower Advisors, LLC | $142,739 | 0.72% | 16,147 | Shares | Sole | 2026-05-05 | ||||
| Large Centiva Capital, LP | $132,308 | 0.67% | 14,967 | Shares | Sole | 2026-05-14 | ||||
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $122,999 | 0.62% | 13,914 | Shares | Defined | 2026-05-15 | ||||
| Mid Susquehanna Portfolio Strategies, LLC | $105,682 | 0.53% | 11,955 | Shares | Sole | 2026-05-15 | ||||
| Mega BANK OF AMERICA CORP /DE/ Bank | $100,926 | 0.51% | 11,417 | Shares | Defined | 2026-05-18 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $93,376 | 0.47% | 10,563 | Shares | Defined | 2026-05-13 | ||||
| Mid XTX Topco Ltd | $89,920 | 0.45% | 10,172 | Shares | Defined | 2026-05-15 | ||||
| Small Zweig-DiMenna Associates LLC | $73,389 | 0.37% | 8,302 | Shares | Sole | 2026-05-05 | ||||
| Mid GROUP ONE TRADING LLC | $44,624 | 0.22% | 5,048 | Shares | Sole | 2026-05-13 | ||||
| Mega WELLS FARGO & COMPANY/MN | $31,619 | 0.16% | 3,577 | Shares | Defined | 2026-05-11 | ||||
| Mega Vanguard Global Advisers, LLC | $25,211 | 0.13% | 2,852 | Shares | Defined | 2026-05-08 | ||||
| Large Steward Partners Investment Advisory, LLC | $21,985 | 0.11% | 2,487 | Shares | Sole | 2026-05-08 | ||||
| Mid INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC | $16,796 | 0.08% | 1,900 | Shares | Sole | 2026-05-01 | ||||
| Mid IFP Advisors, Inc | $13,065 | 0.07% | 1,478 | Shares | Sole | 2026-04-13 | ||||
| Mid Tower Research Capital LLC (TRC) | $10,925 | 0.06% | 1,236 | Shares | Defined | 2026-05-15 | ||||
| Mega PNC FINANCIAL SERVICES GROUP, INC. | $9,547 | 0.05% | 1,080 | Shares | Defined | 2026-05-08 | ||||
| Large NATIONAL BANK OF CANADA /FI/ Bank | $8,698 | 0.04% | 984 | Shares | Defined | 2026-05-15 | ||||
| Mega FMR LLC | $7,407 | 0.04% | 838 | Shares | Defined | 2026-05-15 | ||||
| Large OSAIC HOLDINGS, INC. | $7,274 | 0.04% | 823 | Shares | Defined | 2026-05-15 | ||||
| Large Rockefeller Capital Management L.P. | $3,553 | 0.02% | 402 | Shares | Defined | 2026-05-14 | ||||
| Mega DEUTSCHE BANK AG\ Bank | $3,067 | 0.02% | 347 | Shares | Sole | 2026-05-06 | ||||
| Large CWM, LLC | $2,174 | 0.01% | 246 | Shares | Sole | 2026-05-14 | ||||
| Micro Hurley Capital, LLC | $2,165 | 0.01% | 245 | Shares | Sole | 2026-05-06 | ||||
| Mid GAMMA Investing LLC | $1,785 | 0.01% | 202 | Shares | Defined | 2026-04-06 | ||||
| Large Federation des caisses Desjardins du Quebec | $1,759 | 0.01% | 199 | Shares | Defined | 2026-05-14 | ||||
| Micro CKW FINANCIAL GROUP | $1,697 | 0.01% | 192 | Shares | Sole | 2026-05-07 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $1,308 | 0.01% | 148 | Shares | Defined | 2026-04-28 | ||||
| Large FEDERATED HERMES, INC. | $866 | 0.00% | 98 | Shares | Defined | 2026-05-11 | ||||
| Large JONES FINANCIAL COMPANIES LLLP | $848 | 0.00% | 96 | Shares | Sole | 2026-05-15 | ||||
| Micro TopTier Wealth Management, LLC | $804 | 0.00% | 91 | Shares | Sole | 2026-05-06 | ||||
| Mid Optiver Holding B.V. | $769 | 0.00% | 87 | Shares | Defined | 2026-05-15 | ||||
| Micro Cornerstone Financial Management LLC | $583 | 0.00% | 66 | Shares | Sole | 2026-05-08 | ||||
| Large US BANCORP \DE\ Bank | $583 | 0.00% | 66 | Shares | Defined | 2026-05-15 | ||||
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $548 | 0.00% | 62 | Shares | Defined | 2026-05-13 | ||||
| Mid HARBOUR INVESTMENTS, INC. | $503 | 0.00% | 57 | Shares | Sole | 2026-05-15 | ||||
| Mid Allworth Financial LP | $459 | 0.00% | 52 | Shares | Sole | 2026-05-15 | ||||
| Large NISA INVESTMENT ADVISORS, LLC | $442 | 0.00% | 50 | Shares | Sole | 2026-04-30 | ||||
| Mid Advisory Services Network, LLC | $380 | 0.00% | 43 | Shares | Sole | 2026-05-15 | ||||
| Mid MAI Capital Management | $327 | 0.00% | 37 | Shares | Sole | 2026-05-15 | ||||
| Mid Wilmington Savings Fund Society, FSB | $309 | 0.00% | 35 | Shares | Defined | 2026-04-30 | ||||
| Small CoreCap Advisors, LLC | $221 | 0.00% | 25 | Shares | Sole | 2026-04-07 | ||||
| Small Quent Capital, LLC | $221 | 0.00% | 25 | Shares | Sole | 2026-04-28 | ||||
| Mid HM PAYSON & CO | $221 | 0.00% | 25 | Shares | Sole | 2026-04-13 | ||||
| Micro Strategic Investment Solutions, Inc. /IL | $221 | 0.00% | 25 | Shares | Sole | 2026-05-01 | ||||
| Small Strategic Wealth Partners, Ltd. | $167 | 0.00% | 19 | Shares | Sole | 2026-05-12 | ||||
| Micro Dogwood Wealth Management LLC | $97 | 0.00% | 11 | Shares | Sole | 2026-05-12 | ||||
| Mid MATHER GROUP, LLC. | $88 | 0.00% | 10 | Shares | Sole | 2026-04-13 | ||||
| Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $88 | 0.00% | 10 | Shares | Defined | 2026-05-07 | ||||
| Small Ascentis Wealth Management, LLC | $61 | 0.00% | 7 | Shares | Sole | 2026-04-28 | ||||
| Mid Sound Income Strategies, LLC | $44 | 0.00% | 5 | Shares | Sole | 2026-04-27 | ||||
| Micro Smallwood Wealth Investment Management, LLC | $17 | 0.00% | 2 | Shares | Sole | 2026-04-22 | ||||
| Large Russell Investments Group, Ltd. | $8 | 0.00% | 1 | Shares | Defined | 2026-05-08 | ||||
| No holders match your search. | ||||||||||