KOPIN CORP KOPN
CIK 0000771266 · CUSIP 500600101
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 | AWM Investment Company, Inc. CIK 1535264 · View history | $17.36M 8,549,346 shares | 2.38% | +2.60K(0.0%)Added | SEC filing ↗ Feb 14, 2024 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · Amended · View history | $10.76M 5,301,100 shares | 0.00% | +56.78K(+1.1%)Added | SEC filing ↗ Mar 11, 2024 | ▾ |
| 03 | Archon Capital Management LLC CIK 1398825 · View history | $9.74M 4,795,878 shares | 4.01% | +730.59K(+18.0%)Added | SEC filing ↗ Feb 14, 2024 | ▾ |
| 04 | BlackRock Inc. CIK 1364742 · View history | $3.14M 1,544,839 shares | 0.00% | +195.02K(+14.4%)Added | SEC filing ↗ Feb 13, 2024 | ▾ |
| 05 | D. E. Shaw & Co., Inc. CIK 1009207 · Amended · View history | $3.08M 1,515,718 shares | 0.00% | -104.80K(-6.5%)Reduced | SEC filing ↗ Feb 14, 2024 | ▾ |
| 06 | ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history | $2.68M 1,320,721 shares | 0.53% | -93.71K(-6.6%)Reduced | SEC filing ↗ Feb 8, 2024 | ▾ |
| 07 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $2.15M 1,061,226 shares | 0.00% | +48.67K(+4.8%)Added | SEC filing ↗ Feb 13, 2024 | ▾ |
| 08 | WealthTrust Axiom LLC CIK 1425949 · View history | $1.45M 712,349 shares | 0.48% | -2.80K(-0.4%)Reduced | SEC filing ↗ Feb 5, 2024 | ▾ |
| 09 | Silverberg Bernstein Capital Management LLC CIK 2007880 · View history | $1.30M 638,904 shares | 1.24% | — | SEC filing ↗ Jan 17, 2024 | ▾ |
| 10 | ROYCE & ASSOCIATES LP CIK 906304 · View history | $1.22M 602,399 shares | 0.01% | +602.40KNew | SEC filing ↗ Feb 12, 2024 | ▾ |
| 11 | Legato Capital Management LLC CIK 1442641 · View history | $1.08M 530,418 shares | 0.14% | 0(0.0%)Unchanged | SEC filing ↗ Jan 16, 2024 | ▾ |
| 12 | SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history | $993.71K 489,511 shares | 0.00% | +157.18K(+47.3%)Added | SEC filing ↗ Feb 14, 2024 | ▾ |
| 13 | MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history | $886.63K 436,763 shares | 0.00% | -129.89K(-22.9%)Reduced | SEC filing ↗ Feb 14, 2024 | ▾ |
| 14 | JANE STREET GROUP, LLC CIK 1595888 · View history | $832.93K 410,312 shares | 0.00% | +396.20K(+2808.0%)Added | SEC filing ↗ Feb 15, 2024 | ▾ |
| 15 | CITIGROUP INC CIK 831001 · View history | $763.93K 376,318 shares | 0.00% | +154.40K(+69.6%)Added | SEC filing ↗ Feb 9, 2024 | ▾ |
| 16 | STATE STREET CORP CIK 93751 · View history | $736.59K 362,853 shares | 0.00% | +800(+0.2%)Added | SEC filing ↗ Feb 14, 2024 | ▾ |
| 17 | Penbrook Management LLC CIK 1381055 · View history | $654.83K 322,575 shares | 0.44% | -2.50K(-0.8%)Reduced | SEC filing ↗ Jan 16, 2024 | ▾ |
| 18 | GROUP ONE TRADING, L.P. CIK 932540 · View history | $596.28K 293,736 shares | 0.02% | -35.21K(-10.7%)Reduced | SEC filing ↗ Feb 14, 2024 | ▾ |
| 19 | Balyasny Asset Management L.P. CIK 1218710 · View history | $560.43K 276,073 shares | 0.00% | +276.07KNew | SEC filing ↗ Feb 14, 2024 | ▾ |
| 20 | Qube Research & Technologies Ltd CIK 1729829 · View history | $522.20K 257,242 shares | 0.00% | +230.48K(+861.1%)Added | SEC filing ↗ Feb 13, 2024 | ▾ |
Showing 20 / 92 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 92 reporting institutions.
This page includes 20 of 92 reporting institutions. Sign 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 92 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.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"500600101","quarter":"2023Q4","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 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.