IridexIRIX
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 25 institutions reported holding Iridex Corp. (IRIX) in their 13F filings, up 3 from Q4 2025. 4 opened new positions and 3 sold out. The largest holders were Paragon Associates & Paragon Associates II Joint Venture ($1.0M), Vanguard Capital Management LLC ($520K) and Renaissance Technologies ($401K). 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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $49K |
| Exits | 3 | $60K |
All 13F filers, Q4 2025 → Q1 2026: 167,594 shares bought and 65,830 shares sold, net +101,764 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 25 holders
| Paragon Associates & Paragon Associates II Joint Venture | 1.37% | No change | 1,000,000 | $1.0M |
| Vanguard Capital Management LLC | 0.00% | — | 514,593 | $520K |
| Renaissance Technologies | 0.00% | Add +6.8% | 396,627 | $401K |
| Weber Capital Management LLC | 0.26% | No change | 259,558 | $262K |
| Geode Capital Management, LLC | 0.00% | Add +18.4% | 160,159 | $162K |
| Citadel Advisors | 0.00% | Add +76.9% | 60,851 | $61K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 60,155 | $61K |
| United Capital Financial Advisors, LLC | 0.00% | Reduce -12.2% | 57,529 | $58K |
| Perkins Capital Management Inc. | 0.05% | Add +33.9% | 55,300 | $56K |
| Thompson Davis & Co., Inc. | 0.03% | Add +66.5% | 47,444 | $48K |
| State Street Corp. | 0.00% | No change | 44,718 | $45K |
| Jane Street Group, LLC | 0.00% | Add +18.5% | 37,634 | $38K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -9.1% | 37,621 | $38K |
| Diversify Wealth Management, LLC | 0.00% | New | 33,840 | $35K |
| Susquehanna International Group, LLP | 0.00% | Add +18.1% | 28,919 | $29K |
| Bank of New York Mellon Corp | 0.00% | Reduce -18.7% | 25,649 | $26K |
| Northern Trust Corp. | 0.00% | No change | 21,308 | $22K |
| BlackRock, Inc. | 0.00% | No change | 20,260 | $20K |
| Two Sigma Securities, LLC | 0.00% | New | 10,792 | $11K |
| HighTower Advisors, LLC | 0.00% | No change | 10,000 | $10K |
| Vanguard Global Advisers, LLC | 0.00% | — | 3,963 | $4K |
| Tower Research Capital LLC (TRC) | 0.00% | New | 2,092 | $2K |
| UBS Group AG | 0.00% | New | 1,144 | $1K |
| Group One Trading LLC | 0.00% | No change | 1,100 | $1K |
| Simplex Trading, LLC | 0.00% | Reduce -72.4% | 160 | $161 |
"% of holder's portfolio" is IRIX's weight in each manager's 13F, not the share of Iridex Corp. the manager owns.