IridexIRIX
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 22 institutions reported holding Iridex Corp. (IRIX) in their 13F filings, unchanged from Q3 2025. 3 opened new positions and 2 sold out. The largest holders were Paragon Associates & Paragon Associates II Joint Venture ($1.1M), Vanguard Group Inc. ($660K) and Renaissance Technologies ($424K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Iridex Corp.
- CUSIP
- 462684101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 3 | $134K |
| Exits | 2 | $22K |
All 13F filers, Q3 2025 → Q4 2025: 132,783 shares bought and 152,863 shares sold, net −20,080 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 22 holders
| Paragon Associates & Paragon Associates II Joint Venture | 2.36% | No change | 1,000,000 | $1.1M |
| Vanguard Group Inc. | 0.00% | No change | 578,711 | $660K |
| Renaissance Technologies | 0.00% | Reduce -4.5% | 371,560 | $424K |
| Weber Capital Management LLC | 0.28% | — | 259,558 | $296K |
| Geode Capital Management, LLC | 0.00% | Add +1.6% | 135,208 | $154K |
| United Capital Financial Advisors, LLC | 0.00% | New | 65,529 | $75K |
| State Street Corp. | 0.00% | No change | 44,718 | $51K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -13.4% | 41,385 | $47K |
| Perkins Capital Management Inc. | 0.04% | No change | 41,300 | $47K |
| Citadel Advisors | 0.00% | Reduce -68.6% | 34,395 | $39K |
| Jane Street Group, LLC | 0.00% | Add +93.9% | 31,758 | $36K |
| Bank of New York Mellon Corp | 0.00% | No change | 31,540 | $36K |
| Thompson Davis & Co., Inc. | 0.02% | New | 28,500 | $32K |
| XTX Topco Ltd | 0.00% | Add +7.9% | 28,494 | $32K |
| Susquehanna International Group, LLP | 0.00% | Reduce -56.6% | 24,487 | $28K |
| Diversify Advisory Services, LLC | 0.00% | New | 19,134 | $27K |
| Northern Trust Corp. | 0.00% | Reduce -8.4% | 21,308 | $24K |
| BlackRock, Inc. | 0.00% | No change | 20,260 | $23K |
| HighTower Advisors, LLC | 0.00% | No change | 10,000 | $11K |
| Group One Trading LLC | 0.00% | No change | 1,100 | $1K |
| Simplex Trading, LLC | 0.00% | Reduce -23.6% | 580 | $661 |
| Bank of America Corp. | 0.00% | Reduce -79.6% | 127 | $144 |
"% of holder's portfolio" is IRIX's weight in each manager's 13F, not the share of Iridex Corp. the manager owns.