Portolan Capital Management, LLC
Position in SEI — Solaris Energy Infrastructure, Inc.
CIK 1350290
BOSTON, MA
Position in SEI
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$8,641,484
+$7,063,160 QoQ
Shares Held
107,401
+284.5% QoQ
Ownership
0.140%
of shares outstanding
% of Portfolio
0.32%
of 13F equity value
Holder Rank
#122
of 429 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in SEI Over Time
Shares Held
Position Value (USD)
Position in Oil & Gas Equipment & Services
Energy · as of Jun 30, 2026Portolan Capital Management, LLC holds $8,641,484 across 1 Oil & Gas Equipment & Services name. SEI ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SEI |
Solaris Energy Infrastructure, Inc.
This page
|
107,401 | $8,641,484 |
All Filings in SEI
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4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $8,641,484 | 107,401 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $1,578,324 | 27,930 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $895,219 | 19,474 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $14,526,696 | 363,440 | Shares | Sole | 2025-11-13 | |
| No filing history on record for this holder in this stock. | ||||||