Position in IOSP
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$25,127,209
+$6,044,455 QoQ
Shares Held
308,726
+18.1% QoQ
Ownership
1.25%
of shares outstanding
% of Portfolio
0.20%
of 13F equity value
Holder Rank
#17
of 282 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in IOSP Over Time
Shares Held
Position Value (USD)
Position in Specialty Chemicals
Basic Materials · as of Jun 30, 2026ROYCE & ASSOCIATES LP holds $411,780,234 across 10 Specialty Chemicals names. IOSP ranks #5 (6.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | KWR |
Quaker Chemical Corp
|
860,494 | $136,706,681 | |
| 2 | ESI |
Element Solutions Inc
|
1,931,621 | $92,234,902 | |
| 3 | NGVT |
Ingevity Corp
|
940,417 | $70,220,937 | |
| 4 | WDFC |
Wd 40 Co
|
185,690 | $45,241,511 | |
| 5 | IOSP |
Innospec Inc.
This page
|
308,726 | $25,127,209 | |
| 6 | MTX |
Minerals Technologies Inc
|
160,947 | $11,905,249 | |
| 7 | HWKN |
Hawkins Inc
|
78,257 | $11,120,319 | |
| 8 | ASPN |
Aspen Aerogels Inc
|
1,323,218 | $8,389,202 |
All Filings in IOSP
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $25,127,209 | 308,726 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $19,082,754 | 261,336 | Shares | Sole | 2026-05-12 | |
| 2025-12-31 | $23,361,998 | 305,226 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $38,010,096 | 492,614 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $52,766,643 | 627,502 | Shares | Sole | 2025-08-11 | |
| 2025-03-31 | $61,932,011 | 653,636 | Shares | Sole | 2025-05-06 | |
| 2024-12-31 | $85,594,872 | 777,711 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $94,467,808 | 835,333 | Shares | Sole | 2024-11-06 | |
| 2024-06-30 | $94,476,027 | 764,431 | Shares | Sole | 2024-08-13 | |
| 2024-03-31 | $103,574,278 | 803,275 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $101,565,165 | 824,125 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $86,629,830 | 847,650 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $86,106,207 | 857,290 | Shares | Sole | 2023-08-07 | |
| 2023-03-31 | $85,364,663 | 831,447 | Shares | Sole | 2023-05-23 | |
| 2022-12-31 | $89,563,904 | 870,736 | Shares | Sole | 2023-05-23 | |
| 2022-09-30 | $89,755,430 | 1,047,688 | Shares | Sole | 2022-11-03 | |
| 2022-06-30 | $102,334,755 | 1,068,324 | Shares | Sole | 2022-08-04 | |
| 2022-03-31 | $111,315,067 | 1,202,756 | Shares | Sole | 2022-05-05 | |
| 2021-12-31 | $122,093,335 | 1,351,487 | Shares | Sole | 2022-02-07 | |
| 2021-09-30 | $100,897,075 | 1,198,018 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $83,023,677 | 916,275 | Shares | Sole | 2021-08-06 | |
| 2021-03-31 | $93,951,594 | 914,905 | Shares | Sole | 2021-05-10 | |
| 2020-12-31 | $80,746,796 | 889,968 | Shares | Sole | 2021-02-08 | |
| 2020-09-30 | $42,789,313 | 675,763 | Shares | Sole | 2020-11-12 | |
| 2020-06-30 | $52,413,429 | 678,491 | Shares | Sole | 2020-08-07 | |
| 2020-03-31 | $48,372,127 | 696,102 | Shares | Sole | 2020-05-12 | |
| No filing history on record for this holder in this stock. | ||||||