SOLARIS ENERGY INFRAS INC SEI
COM CL A · Common Stock · CUSIP 83418M103
- SectorIndustrials
- IndustryOil & Gas Field Machinery & Equipment
- HeadquartersHouston, TX
- FilingsSEC EDGAR
* 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 ($11.8m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $39.97. Options: 14 managers hold calls ($49.3m notional), 21 hold puts ($157.3m).
Trends to Q3 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 128 |
| Q4 2022 | 129 |
| Q1 2023 | 118 |
| Q2 2023 | 101 |
| Q3 2023 | 120 |
| Q4 2023 | 141 |
| Q1 2024 | 133 |
| Q2 2024 | 130 |
| Q3 2024 | 136 |
| Q4 2024 | 180 |
| Q1 2025 | 201 |
| Q2 2025 | 214 |
| Q3 2025 | 272 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 79 | 46 |
| Q1 2024 | 65 | 83 |
| Q2 2024 | 58 | 72 |
| Q3 2024 | 74 | 76 |
| Q4 2024 | 104 | 71 |
| Q1 2025 | 144 | 69 |
| Q2 2025 | 144 | 84 |
| Q3 2025 | 168 | 101 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2024 | $13.9m | $103.3k | 0.01 |
| Q1 2025 | $49.4m | $28.7m | 0.58 |
| Q2 2025 | $10.8m | $60.6m | 5.63 |
| Q3 2025 | $49.3m | $157.3m | 3.19 |
Biggest buyers
| Situational Awareness LP | New | +1.2m |
| VAN ECK ASSOCIATES CORP | Added | +1.1m |
| JANE STREET GROUP, LLC | New | +1.0m |
| Advent International, L.P. | New | +1.0m |
| Point72 Asset Management, L.P. | Added | +923.3k |
| Ceredex Value Advisors LLC | New | +876.9k |
| GOLDMAN SACHS GROUP INC | Added | +851.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +706.8k |
| FMR LLC | Added | +584.8k |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT | New | +569.2k |
Biggest sellers
| Driehaus Capital Management LLC | Reduced | -1.3m |
| BlackRock, Inc. | Reduced | -1.3m |
| Encompass Capital Advisors LLC | Reduced | -707.6k |
| Honeycomb Asset Management LP | Sold out | -672.0k |
| WESTWOOD HOLDINGS GROUP INC | Reduced | -643.6k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | Reduced | -613.3k |
| SCOPUS ASSET MANAGEMENT, L.P. | Sold out | -378.7k |
| T. Rowe Price Investment Management, Inc. | Sold out | -335.9k |
| Rockefeller Capital Management L.P. | Reduced | -284.7k |
| UBS Group AG | Reduced | -271.2k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $12.5m311.7k shares |
| Caption Management, LLC | Added | $8.0m199.3k shares |
| CITADEL ADVISORS LLC | Added | $6.7m168.2k shares |
| PEAK6 LLC | New | $6.4m160.2k shares |
| SIMPLEX TRADING, LLC | Added | $4.1m102.4k shares |
| K2 PRINCIPAL FUND, L.P. | New | $3.4m85.0k shares |
| JANE STREET GROUP, LLC | Reduced | $1.9m47.5k shares |
| IMC-Chicago, LLC | New | $1.4m35.6k shares |
| WOLVERINE TRADING, LLC | New | $1.4m34.0k shares |
| D. E. Shaw & Co., Inc. | Added | $1.4m34.1k shares |
Biggest puts
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | Added | $69.1m1.7m shares |
| Yaupon Capital Management LP | New | $14.1m353.7k shares |
| CITADEL ADVISORS LLC | Added | $13.3m333.8k shares |
| JANE STREET GROUP, LLC | Added | $10.1m253.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $9.3m233.4k shares |
| SIMPLEX TRADING, LLC | Reduced | $8.5m212.0k shares |
| GROUP ONE TRADING LLC | Added | $7.5m187.5k shares |
| Aristides Capital LLC | Reduced | $4.7m116.9k shares |
| BARCLAYS PLC | New | $4.0m100.0k shares |
| AMERIPRISE FINANCIAL INC | Added | $3.6m89.7k 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.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +6.1 pts · filed 2026-08-06 | 13.1% |
| Zartler William A 13G · exempt (held before listing) -2.1 pts · filed 2026-02-13 | 10.0% |
| Solaris Energy Capital, LLC 13G · exempt (held before listing) filed 2025-02-14 | 8.5% |
| Yorktown Energy Partners X, L.P. 13G · passive -8.9 pts · filed 2026-08-14 | 7.2% |
| Voya Financial, Inc. 13G · institution new · filed 2026-02-12 | 5.2% |
Fell to 5% or below in the last year: Encompass Capital Advisors LLC (3.0%, 2026-05-15), FMR LLC (3.8%, 2026-05-06), VANGUARD GROUP INC (0.0%, 2026-03-27), JANE STREET GROUP, LLC (3.7%, 2026-02-04), DRIEHAUS CAPITAL MANAGEMENT LLC (2.2%, 2025-11-14), SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC (5.0%, 2025-11-14)
Insider purchases and sales in Q3 2025
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 1 | $148.8k | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 3 | $23.9m | — |
| Q1 2025 | 4 | $807.5k | 0 | — | — |
| Q2 2025 | 2 | $316.5k | 0 | — | — |
| Q3 2025 | 2 | $298.3k | 3 | $817.2k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-09-10 | BURKE JAMES R Director | Sold | $146.1k5.0k shares |
| 2025-09-09 | Zartler William A CHAIRMAN AND CEO, director | Bought | $248.3k10.0k shares |
| 2025-09-09 | Ramachandran Kyle S. PRESIDENT AND CFO | Bought | $50.0k2.0k shares |
| 2025-08-26 | Powell Christopher M CHIEF LEGAL OFFICER | Sold | $382.5k12.8k shares |
| 2025-08-25 | Giesinger Edgar R. JR. Director | Sold | $288.6k10.0k shares |
| 2025-08-06 | KTR Management Company, LLC +1 10% owner | Sold | $118.0m4.0m shares |
| 2025-07-28 | J Turbines, Inc. +1 10% owner | Sold | $121.2m4.0m shares |
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, Q3 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 4.9m $194.0m | Reduced -1.3m |
| Encompass Capital Advisors LLC 5.25% of their portfolio | 2.9m $116.7m | Reduced -707.6k |
| VANGUARD GROUP INC 0.00% of their portfolio | 2.7m $106.5m | Added +224.0k |
| FMR LLC 0.00% of their portfolio | 2.2m $89.4m | Added +584.8k |
| MORGAN STANLEY 0.00% of their portfolio | 1.9m $75.6m | Added +307.3k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 2.34% of their portfolio | 1.8m $71.8m | Reduced -613.3k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.7m $67.8m | Added +851.9k |
| VAN ECK ASSOCIATES CORP 0.05% of their portfolio | 1.3m $51.8m | Added +1.1m |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 1.2m $48.9m | Reduced -30.3k |
| GW&K Investment Management, LLC 0.42% of their portfolio | 1.2m $47.1m | Added +131.0k |
| Situational Awareness LP 2.05% of their portfolio | 1.2m $46.0m | New |
| Point72 Asset Management, L.P. 0.10% of their portfolio | 1.1m $43.9m | Added +923.3k |
| JANE STREET GROUP, LLC 0.05% of their portfolio | 1.0m $41.7m | New |
| STATE STREET CORP 0.00% of their portfolio | 1.0m $41.7m | Added +121.7k |
| TWO SIGMA INVESTMENTS, LP 0.06% of their portfolio | 1.0m $40.3m | Added +474.1k |
| Advent International, L.P. 0.81% of their portfolio | 1.0m $40.2m | New |
| BRIGHTLINE CAPITAL MANAGEMENT, LLC 16.43% of their portfolio | 1.0m $40.1m | Reduced -119.0k |
| Driehaus Capital Management LLC 0.28% of their portfolio | 961.5k $38.4m | Reduced -1.3m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 911.2k $36.4m | Added +47.6k |
| Ceredex Value Advisors LLC 0.81% of their portfolio | 876.9k $35.0m | New |
| WESTWOOD HOLDINGS GROUP INC 0.25% of their portfolio | 861.1k $34.4m | Reduced -643.6k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 802.1k $32.1m | Added +155.4k |
| SIR Capital Management, L.P. 2.74% of their portfolio | 763.9k $30.5m | Reduced -268.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 728.4k $29.1m | Added +706.8k |
| Goodlander Investment Management, LLC 9.91% of their portfolio | 650.0k $26.0m | Reduced -50.0k |
| EMERALD ADVISERS, LLC 0.79% of their portfolio | 616.7k $24.7m | Reduced -21.7k |
| UBS Group AG 0.00% of their portfolio | 590.7k $23.6m | Reduced -271.2k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 577.3k $23.1m | Reduced -109.8k |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT 1.25% of their portfolio | 569.2k $22.8m | New |
| MARSHALL WACE, LLP 0.02% of their portfolio | 532.5k $21.3m | Added +506.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.02% of their portfolio | 531.0k $21.2m | Added +520.4k |
| ROYCE & ASSOCIATES LP 0.20% of their portfolio | 494.6k $19.8m | Reduced -28.8k |
| TUDOR INVESTMENT CORP ET AL 0.12% of their portfolio | 468.2k $18.7m | Added +71.8k |
| Ranger Investment Management, L.P. 1.19% of their portfolio | 426.1k $17.0m | New |
| CenterBook Partners LP 0.82% of their portfolio | 415.5k $16.6m | Added +347.7k |
| Assenagon Asset Management S.A. 0.02% of their portfolio | 395.6k $15.8m | Added +360.1k |
| JENNISON ASSOCIATES LLC 0.01% of their portfolio | 386.4k $15.4m | Added +373.9k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.56% of their portfolio | 366.9k $14.7m | Unchanged |
| Portolan Capital Management, LLC 0.79% of their portfolio | 363.4k $14.5m | New |
| PINNACLE ASSOCIATES LTD 0.19% of their portfolio | 355.2k $14.2m | Reduced -8.4k |
| Squarepoint Ops LLC 0.03% of their portfolio | 353.8k $14.1m | Added +94.6k |
| Hiddenite Capital Partners LP 7.58% of their portfolio | 350.0k $14.0m | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 338.9k $13.5m | Added +230.6k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 334.0k $13.3m | Added +5.9k |
| Progeny 3, Inc. 0.66% of their portfolio | 322.3k $12.9m | New |
| KENNEDY CAPITAL MANAGEMENT LLC 0.28% of their portfolio | 317.7k $12.7m | Added +31.6k |
| EMERALD MUTUAL FUND ADVISERS TRUST 0.64% of their portfolio | 308.8k $12.3m | Reduced -7.2k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 308.2k $12.3m | Added +62.3k |
| Sagefield Capital LP 1.35% of their portfolio | 302.8k $12.1m | Reduced -191.4k |
| Concentric Capital Strategies, LP 0.57% of their portfolio | 300.0k $12.0m | New |
| Meros Investment Management, LP 4.98% of their portfolio | 291.7k $11.7m | Reduced -11.0k |
| Qube Research & Technologies Ltd 0.02% of their portfolio | 280.1k $11.2m | Added +265.6k |
| TWO SIGMA ADVISERS, LP 0.02% of their portfolio | 269.8k $10.8m | Added +58.3k |
| Channing Capital Management, LLC 0.28% of their portfolio | 267.8k $10.7m | Reduced -85.5k |
| Aventail Capital Group, LP 0.51% of their portfolio | 266.3k $10.6m | Reduced -234.6k |
| Stephens Investment Management Group LLC 0.14% of their portfolio | 266.1k $10.6m | Reduced -2.2k |
| GILDER GAGNON HOWE & CO LLC 0.11% of their portfolio | 260.5k $10.4m | Reduced -5.5k |
| Jump Financial, LLC 0.12% of their portfolio | 239.9k $9.6m | Reduced -208.1k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 236.4k $9.4m | Added +113.8k |
| Cubist Systematic Strategies, LLC 0.13% of their portfolio | 233.7k $9.3m | Added +47.5k |
| AYAL Capital Advisors Ltd 5.33% of their portfolio | 231.4k $9.2m | Reduced -65.8k |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.05% of their portfolio | 203.1k $8.1m | Reduced -47.4k |
| CASTLEARK MANAGEMENT LLC 0.22% of their portfolio | 193.9k $7.8m | Added +116.9k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 186.3k $7.4m | Added +140.2k |
| Uniplan Investment Counsel, Inc. 0.72% of their portfolio | 183.8k $7.3m | Reduced -30.8k |
| Acuitas Investments, LLC 4.69% of their portfolio | 182.9k $7.3m | Reduced -6.1k |
| Ballast Asset Management, LP 3.32% of their portfolio | 181.8k $7.3m | Reduced -113.3k |
| AGF MANAGEMENT LTD 0.03% of their portfolio | 165.4k $6.6m | New |
| Quantbot Technologies LP 0.18% of their portfolio | 161.4k $6.5m | Added +42.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 150.0k $6.0m | Added +80.7k |
| Duquesne Family Office LLC 0.15% of their portfolio | 145.6k $5.8m | New |
| GeoSphere Capital Management, LLC 4.25% of their portfolio | 139.5k $5.6m | Reduced -66.5k |
| RITHOLTZ WEALTH MANAGEMENT 0.10% of their portfolio | 133.7k $5.3m | Added +539 |
| Schonfeld Strategic Advisors LLC 0.04% of their portfolio | 133.4k $5.3m | Added +51.8k |
| AE Wealth Management LLC 0.03% of their portfolio | 127.3k $5.1m | Added +7.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 121.1k $4.8m | Reduced -132.7k |
| Trexquant Investment LP 0.05% of their portfolio | 118.8k $4.7m | New |
| Appian Way Asset Management LP 1.01% of their portfolio | 116.7k $4.7m | New |
| CITIGROUP INC 0.00% of their portfolio | 111.8k $4.5m | Reduced -1.2k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 109.3k $4.4m | Reduced -661 |
| Moody Aldrich Partners LLC 0.75% of their portfolio | 98.7k $3.9m | Added +16.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 96.9k $3.9m | Reduced -73.1k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 94.6k $3.8m | Added +75.1k |
| MOORE CAPITAL MANAGEMENT, LP 0.07% of their portfolio | 93.7k $3.7m | New |
| HighTower Advisors, LLC 0.00% of their portfolio | 92.0k $3.7m | New |
| Hel Ved Capital Management Ltd 1.99% of their portfolio | 91.6k $3.7m | New |
| ExodusPoint Capital Management, LP 0.05% of their portfolio | 88.3k $3.5m | Added +61.6k |
| Mercuria Capital Strategies, LLC 4.48% of their portfolio | 85.0k $3.4m | New |
| CREDIT AGRICOLE S A 0.01% of their portfolio | 79.5k $3.2m | First filing |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 78.5k $3.1m | Reduced -84.5k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 78.0k $3.1m | Reduced -25.9k |
| Swiss National Bank 0.00% of their portfolio | 73.4k $2.9m | Added +11.0k |
| Nuveen, LLC 0.00% of their portfolio | 72.5k $2.9m | Reduced -1.9k |
| DARK FOREST CAPITAL MANAGEMENT LP 0.11% of their portfolio | 72.2k $2.9m | New |
| BARCLAYS PLC 0.00% of their portfolio | 70.8k $2.8m | Reduced -7.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 66.0k $2.6m | Reduced -22.1k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 60.4k $2.4m | Added +12.2k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.05% of their portfolio | 59.9k $2.4m | New |
| CLOUGH CAPITAL PARTNERS L P 0.20% of their portfolio | 57.3k $2.3m | Reduced -18.4k |
| Invesco Ltd. 0.00% of their portfolio | 57.0k $2.3m | Reduced -8.0k |