# PSYCHEMEDICS CORPORATION CMN (PMDI)

> Institutional ownership reported to the SEC as of Q4 2025, from Form 13F filings. Source: https://holderbook.com/stocks/PMDI/

- Reporting holders: 1
- Reported value: $441.7K
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [22NW, LP](https://holderbook.com/funds/1694297-22nw-lp/) | $441.7K | 276,034 | 0.2% | 3 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q4 2025 | 1 | $441.7K |
| Q3 2025 | 1 | $582.4K |
| Q2 2025 | 1 | $618.3K |
| Q4 2024 | 2 | $663.7K |