IridexIRIX
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 22 institutions reported holding Iridex Corp. (IRIX) in their 13F filings, up 2 from Q2 2025. 4 opened new positions and 2 sold out. The largest holders were Paragon Associates & Paragon Associates II Joint Venture ($1.1M), Vanguard Group Inc. ($666K) and Renaissance Technologies ($444K). 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $95K |
| Exits | 2 | $51K |
All 13F filers, Q2 2025 → Q3 2025: 227,951 shares bought and 82,907 shares sold, net +145,044 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 22 holders
| Paragon Associates & Paragon Associates II Joint Venture | 2.03% | No change | 1,000,000 | $1.1M |
| Vanguard Group Inc. | 0.00% | Reduce -1.2% | 578,711 | $666K |
| Renaissance Technologies | 0.00% | Add +2.7% | 389,060 | $444K |
| AMH Equity Ltd | 0.26% | Reduce -3.0% | 184,230 | $210K |
| Geode Capital Management, LLC | 0.00% | Add +1.0% | 133,059 | $153K |
| Citadel Advisors | 0.00% | Add +251.2% | 109,473 | $126K |
| Apexium Financial, LP | 0.01% | Add +53.0% | 100,529 | $116K |
| Susquehanna International Group, LLP | 0.00% | Add +46.2% | 56,470 | $65K |
| Goldman Sachs Group Inc. | 0.00% | New | 47,793 | $55K |
| State Street Corp. | 0.00% | No change | 44,718 | $51K |
| Perkins Capital Management Inc. | 0.04% | Reduce -12.7% | 41,300 | $47K |
| Bank of New York Mellon Corp | 0.00% | No change | 31,540 | $36K |
| XTX Topco Ltd | 0.00% | Add +4.7% | 26,400 | $30K |
| Northern Trust Corp. | 0.00% | Reduce -6.6% | 23,259 | $27K |
| BlackRock, Inc. | 0.00% | No change | 20,260 | $23K |
| Centiva Capital, LP | 0.00% | New | 18,768 | $22K |
| Jane Street Group, LLC | 0.00% | New | 16,381 | $19K |
| HighTower Advisors, LLC | 0.00% | No change | 10,000 | $11K |
| Group One Trading LLC | 0.00% | No change | 1,100 | $1K |
| Bank of America Corp. | 0.00% | Add +405.7% | 622 | $709 |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -90.8% | 501 | $571 |
| Simplex Trading, LLC | 0.00% | New | 759 | $0 |
"% of holder's portfolio" is IRIX's weight in each manager's 13F, not the share of Iridex Corp. the manager owns.