Position in IOSP
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$21,647,873
-$1,771,606 QoQ
Shares Held
296,465
-3.1% QoQ
Ownership
1.20%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2020
6 quarters on record
Voting authority
Sole 99.61277047880863.ToString("F0")%
Shared 0.ToString("F0")%
None 0.38722952119137166.ToString("F0")%
Common Shares in IOSP Over Time
Shares Held
Position Value (USD)
Position in Specialty Chemicals
Basic Materials · as of Mar 31, 2026BROWN ADVISORY INC holds $623,861,336 across 24 Specialty Chemicals names. IOSP ranks #6 (3.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ECL |
Ecolab Inc.
|
1,084,615 | $288,529,280 | |
| 2 | NGVT |
Ingevity Corp
|
992,016 | $70,661,299 | |
| 3 | ECVT |
Ecovyst Inc.
|
4,842,174 | $62,270,357 | |
| 4 | FUL |
Fuller H B Co
|
919,133 | $56,692,122 | |
| 5 | LIN |
Linde PLC
|
105,990 | $52,545,600 | |
| 6 | IOSP |
Innospec Inc.
This page
|
296,465 | $21,647,873 | |
| 7 | CLMT |
Calumet, Inc. /DE
|
565,724 | $20,309,491 | |
| 8 | DD |
DuPont de Nemours, Inc.
|
336,289 | $15,402,035 |
All Filings in IOSP
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6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $21,647,873 | 296,465 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $23,419,479 | 305,977 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $27,003,838 | 349,972 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $35,868,084 | 426,544 | Shares | Defined | 2025-08-13 | |
| 2025-03-31 | $31,212,070 | 329,415 | Shares | Defined | 2025-04-30 | |
| 2020-12-31 | $206,864 | 2,280 | Shares | Defined | 2021-02-12 | |
| No filing history on record for this holder in this stock. | ||||||