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 ($709.7k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $56.51. Options: 15 managers hold calls ($190.9m notional), 15 hold puts ($173.7m).
Trends to Q1 2026
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 |
| Q4 2025 | 335 |
| Q1 2026 | 363 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 58 | 72 |
| Q3 2024 | 74 | 76 |
| Q4 2024 | 104 | 71 |
| Q1 2025 | 144 | 69 |
| Q2 2025 | 144 | 84 |
| Q3 2025 | 168 | 101 |
| Q4 2025 | 209 | 117 |
| Q1 2026 | 207 | 170 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $10.8m | $60.6m | 5.63 |
| Q3 2025 | $49.3m | $157.3m | 3.19 |
| Q4 2025 | $136.9m | $117.6m | 0.86 |
| Q1 2026 | $190.9m | $173.7m | 0.91 |
Biggest buyers
| TWO SIGMA INVESTMENTS, LP | Added | +861.6k |
| JENNISON ASSOCIATES LLC | Added | +805.3k |
| VAN ECK ASSOCIATES CORP | Added | +712.7k |
| Korea Investment CORP | Added | +643.4k |
| MARSHALL WACE, LLP | Added | +632.1k |
| AMERIPRISE FINANCIAL INC | Added | +619.0k |
| MILLENNIUM MANAGEMENT LLC | Added | +440.5k |
| Driehaus Capital Management LLC | Added | +400.5k |
| Valiant Capital Management, L.P. | Added | +385.0k |
| FRANKLIN RESOURCES INC | Added | +339.0k |
Biggest sellers
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | Sold out | -1.0m |
| Goodlander Investment Management, LLC | Sold out | -960.0k |
| Encompass Capital Advisors LLC | Reduced | -809.5k |
| Situational Awareness LP | Reduced | -760.9k |
| GOLDMAN SACHS GROUP INC | Reduced | -749.0k |
| Ceredex Value Advisors LLC | Reduced | -680.6k |
| CITADEL ADVISORS LLC | Reduced | -671.0k |
| TWO SIGMA ADVISERS, LP | Sold out | -553.4k |
| FMR LLC | Reduced | -427.0k |
| MORGAN STANLEY | Reduced | -383.9k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $84.0m1.5m shares |
| Caption Management, LLC | Added | $31.4m555.0k shares |
| BARCLAYS PLC | Unchanged | $25.4m450.0k shares |
| JANE STREET GROUP, LLC | Added | $15.4m273.3k shares |
| IMC-Chicago, LLC | Added | $7.0m123.0k shares |
| CITADEL ADVISORS LLC | Added | $6.7m118.7k shares |
| GROUP ONE TRADING LLC | Added | $5.4m95.5k shares |
| K2 PRINCIPAL FUND, L.P. | New | $5.1m90.0k shares |
| PEAK6 LLC | New | $2.8m50.0k shares |
| D. E. Shaw & Co., Inc. | Added | $2.7m48.5k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $55.4m980.7k shares |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | Reduced | $46.6m825.0k shares |
| JANE STREET GROUP, LLC | Added | $18.6m329.7k shares |
| CITADEL ADVISORS LLC | Added | $16.9m299.4k shares |
| GROUP ONE TRADING LLC | Added | $6.7m119.4k shares |
| SIMPLEX TRADING, LLC | Added | $6.4m112.5k shares |
| IMC-Chicago, LLC | Reduced | $5.9m104.1k shares |
| Walleye Trading LLC | Added | $4.0m70.7k shares |
| Dockside LLC | New | $3.8m66.5k shares |
| Aristides Capital LLC | Reduced | $2.9m52.0k 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.
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 Q1 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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| 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 | — |
| Q4 2025 | 2 | $349.2k | 3 | $2.8m | — |
| Q1 2026 | 0 | — | 0 | — | — |
None reported in Q1 2026.
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 4.1m $233.0m | Reduced -189.5k |
| MILLENNIUM MANAGEMENT LLC 0.10% of their portfolio | 2.3m $129.2m | Added +440.5k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 2.0m $115.3m | First filing |
| VAN ECK ASSOCIATES CORP 0.08% of their portfolio | 2.0m $110.4m | Added +712.7k |
| TWO SIGMA INVESTMENTS, LP 0.09% of their portfolio | 1.9m $109.7m | Added +861.6k |
| FMR LLC 0.01% of their portfolio | 1.9m $105.3m | Reduced -427.0k |
| Encompass Capital Advisors LLC 4.03% of their portfolio | 1.8m $98.9m | Reduced -809.5k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 4.52% of their portfolio | 1.7m $97.7m | Reduced -347.3k |
| MORGAN STANLEY 0.01% of their portfolio | 1.7m $96.5m | Reduced -383.9k |
| Driehaus Capital Management LLC 0.68% of their portfolio | 1.6m $92.0m | Added +400.5k |
| JANE STREET GROUP, LLC 0.10% of their portfolio | 1.6m $88.6m | Reduced -72.6k |
| MARSHALL WACE, LLP 0.09% of their portfolio | 1.5m $83.1m | Added +632.1k |
| STATE STREET CORP 0.00% of their portfolio | 1.4m $76.6m | Added +181.1k |
| Advent International, L.P. 1.65% of their portfolio | 1.2m $70.1m | Reduced -22.4k |
| JENNISON ASSOCIATES LLC 0.05% of their portfolio | 1.2m $66.7m | Added +805.3k |
| PRINCIPAL FINANCIAL GROUP INC 0.03% of their portfolio | 1.1m $64.7m | Reduced -321.7k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.1m $64.1m | Reduced -749.0k |
| Valiant Capital Management, L.P. 4.98% of their portfolio | 1.1m $63.3m | Added +385.0k |
| Situational Awareness Partners LP 1.62% of their portfolio | 1.1m $62.5m | First filing |
| Situational Awareness LP 1.62% of their portfolio | 1.1m $62.5m | Reduced -760.9k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.1m $62.2m | Added +78.0k |
| GW&K Investment Management, LLC 0.53% of their portfolio | 1.1m $60.0m | Reduced -20.8k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 929.2k $52.5m | Reduced -318.5k |
| Value Aligned Research Advisors, LLC 0.60% of their portfolio | 897.0k $50.7m | Reduced -79.0k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 871.5k $49.2m | Added +143.0k |
| Qube Research & Technologies Ltd 0.06% of their portfolio | 793.3k $44.8m | Reduced -361.6k |
| VOYA INVESTMENT MANAGEMENT LLC 0.05% of their portfolio | 790.6k $44.7m | Added +314.2k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 725.0k $41.0m | Added +619.0k |
| UBS Group AG 0.01% of their portfolio | 712.7k $40.3m | Added +70.5k |
| Korea Investment CORP 0.08% of their portfolio | 670.5k $37.9m | Added +643.4k |
| Ranger Investment Management, L.P. 2.49% of their portfolio | 607.8k $34.3m | Reduced -15.4k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 606.2k $34.3m | First filing |
| WESTWOOD HOLDINGS GROUP INC 0.25% of their portfolio | 602.6k $34.1m | Reduced -87.2k |
| EMERALD ADVISERS, LLC 1.06% of their portfolio | 594.7k $33.6m | Reduced -32.0k |
| Nuveen, LLC 0.01% of their portfolio | 545.3k $30.8m | Reduced -171.7k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.89% of their portfolio | 531.9k $30.1m | Added +165.0k |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 493.5k $27.9m | Reduced -671.0k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 448.9k $25.4m | Added +51.5k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.53% of their portfolio | 443.1k $25.0m | Reduced -186.6k |
| Assenagon Asset Management S.A. 0.04% of their portfolio | 431.9k $24.4m | Added +204.4k |
| GILDER GAGNON HOWE & CO LLC 0.28% of their portfolio | 408.0k $23.1m | Added +164.0k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 395.1k $22.3m | Added +339.0k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 390.5k $22.1m | Added +29.7k |
| CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT 1.09% of their portfolio | 388.0k $21.9m | Added +327.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 385.9k $21.8m | Added +99.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 376.6k $21.3m | Added +351 |
| Point72 Asset Management, L.P. 0.03% of their portfolio | 328.5k $18.6m | Added +284.2k |
| ROYCE & ASSOCIATES LP 0.18% of their portfolio | 327.2k $18.5m | Reduced -4.8k |
| Squarepoint Ops LLC 0.04% of their portfolio | 325.8k $18.4m | Added +222.2k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 319.2k $18.0m | First filing |
| EMERALD MUTUAL FUND ADVISERS TRUST 0.86% of their portfolio | 314.8k $17.8m | Added +2.8k |
| Sagefield Capital LP 1.23% of their portfolio | 302.8k $17.1m | Reduced -93.6k |
| Balyasny Asset Management L.P. 0.03% of their portfolio | 287.2k $16.2m | Reduced -23.8k |
| Penn Capital Management Company, LLC 1.23% of their portfolio | 280.7k $15.9m | Reduced -7.7k |
| BARCLAYS PLC 0.01% of their portfolio | 280.6k $15.9m | Reduced -41.5k |
| AYAL Capital Advisors Ltd 7.78% of their portfolio | 268.8k $15.2m | Reduced -40.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 264.1k $14.9m | Added +3.0k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 261.8k $14.8m | Added +123.6k |
| NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio | 257.7k $14.6m | Added +88.4k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 257.6k $14.6m | Reduced -10.5k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 254.8k $14.4m | Added +52.0k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 248.9k $14.1m | Added +11.7k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.02% of their portfolio | 240.1k $13.6m | Reduced -9.8k |
| AXIOM INVESTORS LLC /DE 0.15% of their portfolio | 231.3k $13.1m | New |
| BANK OF MONTREAL /CAN/ 0.01% of their portfolio | 229.5k $13.0m | Reduced -19.7k |
| Stephens Investment Management Group LLC 0.18% of their portfolio | 227.9k $12.9m | Reduced -19.7k |
| Wealth High Governance Asset Management Ltda. 2.00% of their portfolio | 227.2k $12.8m | Added +13.5k |
| No Street GP LP 0.85% of their portfolio | 225.0k $12.7m | Reduced -150.0k |
| BESSEMER GROUP INC 0.02% of their portfolio | 220.8k $12.5m | Reduced -59.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 214.4k $12.1m | Added +10.8k |
| BANK OF NOVA SCOTIA 0.02% of their portfolio | 214.0k $12.1m | Reduced -53.1k |
| BROWN BROTHERS HARRIMAN & CO 0.06% of their portfolio | 210.0k $11.9m | New |
| Jump Financial, LLC 0.16% of their portfolio | 194.8k $11.0m | Reduced -14.2k |
| Trexquant Investment LP 0.08% of their portfolio | 189.0k $10.7m | Added +165.7k |
| CITIGROUP INC 0.01% of their portfolio | 172.9k $9.8m | Reduced -142.6k |
| Aventail Capital Group, LP 0.45% of their portfolio | 163.9k $9.3m | Reduced -136.1k |
| SIR Capital Management, L.P. 0.86% of their portfolio | 163.9k $9.3m | Reduced -1.0k |
| PICTON MAHONEY ASSET MANAGEMENT 0.10% of their portfolio | 163.4k $9.2m | New |
| PALISADE CAPITAL MANAGEMENT, LP 0.29% of their portfolio | 155.5k $8.8m | New |
| Banco Santander, S.A. 0.07% of their portfolio | 151.5k $8.6m | Reduced -23.0k |
| Channing Capital Management, LLC 0.22% of their portfolio | 149.2k $8.4m | Reduced -56.1k |
| CenterBook Partners LP 0.45% of their portfolio | 146.7k $8.3m | Reduced -209.8k |
| Meros Investment Management, LP 3.52% of their portfolio | 143.8k $8.1m | Reduced -20.6k |
| Uniplan Investment Counsel, Inc. 0.79% of their portfolio | 137.0k $7.7m | Reduced -7.4k |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.04% of their portfolio | 135.5k $7.7m | Reduced -13.4k |
| Freestone Grove Partners LP 0.05% of their portfolio | 133.5k $7.5m | Reduced -79.7k |
| Ceredex Value Advisors LLC 0.24% of their portfolio | 132.3k $7.5m | Reduced -680.6k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 131.8k $7.4m | Reduced -12.6k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 131.6k $7.4m | Reduced -450 |
| BW Gestao de Investimentos Ltda. 0.31% of their portfolio | 122.8k $6.9m | Reduced -13.5k |
| Wealth High Governance Capital Ltda 2.08% of their portfolio | 122.8k $6.9m | Reduced -13.5k |
| PINNACLE ASSOCIATES LTD 0.09% of their portfolio | 122.7k $6.9m | Reduced -90.5k |
| HALLSTATT ADVISORS L.P. 5.37% of their portfolio | 120.2k $6.8m | New |
| Lisanti Capital Growth, LLC 1.67% of their portfolio | 117.3k $6.6m | Added +33.4k |
| Ballast Asset Management, LP 2.91% of their portfolio | 115.9k $6.5m | Added +2.8k |
| CREDIT AGRICOLE S A 0.02% of their portfolio | 114.3k $6.5m | Reduced -100 |
| Informed Momentum Co LLC 0.74% of their portfolio | 113.5k $6.4m | Reduced -9.5k |
| LPL Financial LLC 0.00% of their portfolio | 112.5k $6.4m | Added +56.6k |
| Clearbridge Investments, LLC 0.01% of their portfolio | 111.6k $6.3m | New |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.05% of their portfolio | 110.6k $6.2m | Added +97.3k |