HUDSON TECHNOLOGIES INC /NY HDSN
CIK 0000925528 · CUSIP 444144109
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $17.64M 3,161,573 shares | 0.00% | -161.56K(-4.90%)Reduced | SEC filing ↗ Feb 7, 2025 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $14.38M 2,577,556 shares | 0.00% | +89.27K(+3.60%)Added | SEC filing ↗ Feb 11, 2025 | ▾ |
| 03 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $11.45M 2,051,672 shares | 0.00% | -81.59K(-3.80%)Reduced | SEC filing ↗ Feb 13, 2025 | ▾ |
| 04 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $8.38M 1,502,150 shares | 0.01% | +246.00K(+19.60%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 05 | D. E. Shaw & Co., Inc. CIK 1009207 · View history | $7.51M 1,345,553 shares | 0.01% | +993.83K(+282.60%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 06 | NEW SOUTH CAPITAL MANAGEMENT INC CIK 1044797 · View history | $7.38M 1,321,717 shares | 0.31% | -21.45K(-1.60%)Reduced | SEC filing ↗ Feb 6, 2025 | ▾ |
| 07 | WESTERLY CAPITAL MANAGEMENT, LLC CIK 1546172 · View history | $5.68M 1,017,580 shares | 2.62% | +207.58K(+25.60%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 08 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $5.56M 995,729 shares | 0.00% | +4.87K(+0.50%)Added | SEC filing ↗ Feb 12, 2025 | ▾ |
| 09 | STATE STREET CORP CIK 93751 · View history | $5.30M 950,108 shares | 0.00% | -5.02K(-0.50%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 10 | JPMORGAN CHASE & CO CIK 19617 · View history | $4.76M 853,252 shares | 0.00% | +514.64K(+152.00%)Added | SEC filing ↗ Feb 12, 2025 | ▾ |
| 11 | AMERICAN CENTURY COMPANIES INC CIK 748054 · View history | $4.41M 790,472 shares | 0.00% | +90.92K(+13.00%)Added | SEC filing ↗ Feb 11, 2025 | ▾ |
| 12 | MORGAN STANLEY CIK 895421 · Amended · View history | $4.14M 742,363 shares | 0.00% | +274.14K(+58.50%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 13 | 683 Capital Management, LLC CIK 1404574 · View history | $3.55M 635,900 shares | 0.35% | +300.11K(+89.40%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 14 | AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history | $3.08M 551,991 shares | 0.00% | +423.98K(+331.20%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 15 | CITADEL ADVISORS LLC CIK 1423053 · View history | $2.77M 496,948 shares | 0.00% | +225.02K(+82.70%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 16 | LAZARD ASSET MANAGEMENT LLC CIK 1207017 · View history | $2.71M 485,626 shares | 0.00% | -12.28K(-2.50%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 17 | PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO CIK 1007280 · View history | $2.34M 418,740 shares | 0.01% | +51.10K(+13.90%)Added | SEC filing ↗ Feb 19, 2025 | ▾ |
| 18 | Praetorian PR LLC CIK 1949877 · View history | $2.23M 400,000 shares | 0.91% | -1.06K(-0.30%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 19 | MARATHON CAPITAL MANAGEMENT CIK 1213206 · View history | $2.18M 390,700 shares | 0.54% | -8.10K(-2.00%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 20 | GRIZZLYROCK CAPITAL, LLC CIK 2011732 · View history | $2.13M 382,199 shares | 2.23% | -121.40K(-24.10%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
Showing 20 / 169 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 169 reporting institutions.
This page includes 20 of 169 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 169 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"444144109","quarter":"2024Q4","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.