CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in HDSN — Hudson Technologies Inc /Ny
CIK 884546
SAN FRANCISCO, CA
Position in HDSN
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$599,624
-$190,290 QoQ
Shares Held
101,977
-11.6% QoQ
Ownership
0.242%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
23 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in HDSN Over Time
Shares Held
Position Value (USD)
Position in Specialty Chemicals
Basic Materials · as of Mar 31, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $5,541,400,027 across 45 Specialty Chemicals names. HDSN ranks #42 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | LIN |
Linde PLC
|
3,865,271 | $1,916,246,750 | |
| 2 | SHW |
Sherwin Williams Co
|
1,710,826 | $548,405,274 | |
| 3 | ECL |
Ecolab Inc.
|
1,581,311 | $420,660,352 | |
| 4 | APD |
Air Products & Chemicals, Inc.
|
1,394,640 | $405,128,973 | |
| 5 | PPG |
Ppg Industries Inc
|
2,978,998 | $318,395,305 | |
| 6 | LYB |
LyondellBasell Industries N.V.
|
2,654,786 | $213,869,560 | |
| 7 | ALB |
Albemarle Corp
|
1,159,065 | $208,086,939 | |
| 8 | DD |
DuPont de Nemours, Inc.
|
3,163,472 | $144,887,017 |
All Filings in HDSN
Export CSV
23 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $599,624 | 101,977 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $789,914 | 115,316 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $1,140,877 | 114,892 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $933,320 | 114,941 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $788,063 | 127,725 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $681,072 | 122,056 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $1,017,947 | 122,056 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $1,074,621 | 122,255 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $1,269,045 | 115,263 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $1,615,481 | 119,754 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $1,592,728 | 119,754 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $1,132,091 | 117,681 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $1,009,083 | 115,588 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $1,158,861 | 114,512 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $794,358 | 108,076 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $809,382 | 107,774 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $80,742 | 13,002 | Shares | Sole | 2022-05-13 | |
| 2021-06-30 | $48,715 | 14,328 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $23,068 | 14,328 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $15,617 | 14,328 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $16,477 | 14,328 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $14,471 | 14,328 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $9,886 | 14,328 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||