MED — MEDIFAST INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Measured signals that fired on MED
| date | signal | measured base rate |
|---|---|---|
| 2026-08-04 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-25 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-03-11 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-20 | Kiai Parsa Director | Open-market purchase | 42.0K | 11.60 | 487.1K |
| 2026-08-20 | Kiai Parsa Director | Open-market purchase | 1.2K | 11.60 | 13.6K |
| 2026-08-19 | Kiai Parsa Director | Open-market purchase | 28.5K | 11.66 | 332.7K |
| 2026-08-19 | Kiai Parsa Director | Open-market purchase | 799 | 11.66 | 9.3K |
| 2026-05-26 | Kiai Parsa Director | Grant or award | 11.7K | 0.00 | 0 |
| 2026-05-26 | Kiai Parsa Director | Grant or award | 7.6K | 0.00 | 0 |
| 2026-05-26 | Rose Jeffrey Matthew Director | Grant or award | 11.7K | 0.00 | 0 |
| 2026-05-26 | Thomas Andrea B Director | Grant or award | 11.7K | 0.00 | 0 |
| 2026-05-26 | SCHLACKMAN SCOTT Director | Grant or award | 11.7K | 0.00 | 0 |
| 2026-05-26 | Geary Elizabeth A. Director | Grant or award | 11.7K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 9.6M | 944.5K |
| RENAISSANCE TECHNOLOGIES LLC | 7.9M | 773.7K |
| Steamboat Capital Partners, LLC | 7.2M | 707.6K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 6.4M | 631.5K |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5M | 444.5K |
| DIMENSIONAL FUND ADVISORS LP | 3.7M | 361.8K |
| TWO SIGMA INVESTMENTS, LP | 3.4M | 338.2K |
| MORGAN STANLEY | 3.3M | 325.3K |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6M | 253.3K |
| Man Group plc | 2.4M | 236.2K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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