Stocks › MED
MEDIFAST INC
MED·NYSE·
United States·USD
United States·USD$11.44
-0.07 (-0.61%)
Close · Oct 7, 2026 · Close Prices from Tiingo.com
MED
MEDIFAST INC · NYSE
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
MEDS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of MED by members of U.S. Congress · 2 on record
| Politician | Stock | Type | Filed | Traded | |
|---|---|---|---|---|---|
 Donna ShalalaHouse · D · FL |
MEDMEDIFAST INC · Stock |
Sale $1,001 - $15,000 |
Apr 27, 2020 | Jun 24, 2019 | Filing ↗ |
| Donna ShalalaHouse · D · FL |
MEDMEDIFAST INC · Stock |
Purchase $1,001 - $15,000 |
Apr 27, 2020 | Apr 30, 2019 | Filing ↗ |
Whale Activity
Position changes in MED reported for 2026-06-30 by 9 tracked institutional filers
- Increased3
- New3
- Held0
- Decreased3
- Closed0
- No prior filing0
| Filer | Shares | Value | Change |
|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 778.6K | $8.3M | increased |
| TWO SIGMA INVESTMENTS, LP | 481.4K | $5.1M | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 446.6K | $4.7M | increased |
| BlackRock, Inc. | 369.5K | $3.9M | decreased |
| D. E. Shaw & Co., Inc. | 92.3K | $980K | decreased |
| CITADEL ADVISORS LLC | 56.4K | $598K | new |
| MILLENNIUM MANAGEMENT LLC | 47.9K | $508K | new |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 29.1K | $309K | decreased |
| Point72 Asset Management, L.P. | 21.0K | $223K | new |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by MED insiders, by quarter · Form 4
Recent Insider Transactions
825 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Chard Daniel RDirector · Director | Sale | −9,544 | $11.73 | $112K | Sep 29, 2026 | Form 4 ↗ |
| Chard Daniel RDirector · Director | Sale | −9,545 | $11.98 | $114K | Sep 28, 2026 | Form 4 ↗ |
| Kiai ParsaDirector · Director | Purchase | +42.0K | $12.26 | $515K | Aug 26, 2026 | Form 4 ↗ |
| Kiai ParsaDirector · Director | Purchase | +1,175 | $12.26 | $14K | Aug 26, 2026 | Form 4 ↗ |
| Kiai ParsaDirector · Director | Purchase | +4,211 | $12.00 | $51K | Aug 24, 2026 | Form 4 ↗ |
| Kiai ParsaDirector · Director | Purchase | +118 | $12.00 | $1K | Aug 24, 2026 | Form 4 ↗ |
| Kiai ParsaDirector · Director | Purchase | +42.0K | $11.60 | $487K | Aug 20, 2026 | Form 4 ↗ |
| Kiai ParsaDirector · Director | Purchase | +1,175 | $11.60 | $14K | Aug 20, 2026 | Form 4 ↗ |
| Kiai ParsaDirector · Director | Purchase | +799 | $11.66 | $9K | Aug 19, 2026 | Form 4 ↗ |
| Kiai ParsaDirector · Director | Purchase | +28.5K | $11.66 | $333K | Aug 19, 2026 | Form 4 ↗ |
| Rose Jeffrey MatthewDirector | Grant / award | +6,739 | $0.00 | $0 | May 26, 2026 | Form 4 ↗ |
| Rose Jeffrey MatthewDirector | Grant / award | +11.7K | $0.00 | $0 | May 26, 2026 | Form 4 ↗ |
| Kiai ParsaDirector | Grant / award | +7,637 | $0.00 | $0 | May 26, 2026 | Form 4 ↗ |
| Kiai ParsaDirector | Grant / award | +11.7K | $0.00 | $0 | May 26, 2026 | Form 4 ↗ |
| Thomas Andrea BDirector | Grant / award | +11.7K | $0.00 | $0 | May 26, 2026 | Form 4 ↗ |
| SCHLACKMAN SCOTTDirector | Grant / award | +11.7K | $0.00 | $0 | May 26, 2026 | Form 4 ↗ |
| Geary Elizabeth A.Director | Grant / award | +11.7K | $0.00 | $0 | May 26, 2026 | Form 4 ↗ |
| SCHLACKMAN SCOTTDirector | Purchase | +2,500 | $12.53 | $31K | May 11, 2026 | Form 4 ↗ |
| SCHLACKMAN SCOTTDirector | Purchase | +2,500 | $12.65 | $32K | May 8, 2026 | Form 4 ↗ |
| MacKenzie Jonathan BarrettVP, Finance & CAO | Grant / award | +10.8K | $0.00 | $0 | Mar 25, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding MED · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| Schwab Fundamental U.S. Small Company ETF SCHWAB STRATEGIC TRUST | 377.6K | $4.7M | 0.05% | May 31, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 319.0K | $3.4M | 0.00% | Jun 30, 2026 |
| Avantis U.S. Small Cap Value ETF American Century ETF Trust | 232.4K | $2.9M | 0.01% | May 31, 2026 |
| iShares Russell 2000 ETF iSHARES TRUST | 276.9K | $2.8M | 0.00% | Mar 31, 2026 |
| VANGUARD CONSUMER STAPLES INDEX FUND VANGUARD WORLD FUND | 130.7K | $1.6M | 0.02% | May 31, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 115.5K | $1.2M | 0.00% | Jun 30, 2026 |
| iShares U.S. Small-Cap Equity Factor ETF iShares Trust | 121.0K | $1.2M | 0.03% | Jul 31, 2026 |
| Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 103.4K | $1.1M | 0.00% | Apr 30, 2026 |
| U.S. SMALL CAP VALUE PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 110.8K | $1.1M | 0.01% | Jul 31, 2026 |
| iShares Russell 2000 Value ETF iSHARES TRUST | 92.8K | $945K | 0.01% | Mar 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list MED's shares (CUSIP 58470H101), each fund at its latest report since Mar 8, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Parsa KiaiSCHEDULE 13D/A · activist (13D) · 790.7K shares7.1%
Aug 21, 2026 · ↗ - Steamboat Capital Partners, LLCSCHEDULE 13D/A · activist (13D) · 790.7K shares7.1%
Aug 21, 2026 · ↗ - Susquehanna Securities, LLCSCHEDULE 13G · passive (13G) · 587.2K shares5.3%
Aug 14, 2026 · ↗ - Susquehanna Portfolio Strategies, LLCSCHEDULE 13G · passive (13G) · 587.2K shares5.3%
Aug 14, 2026 · ↗ - Kenneth GriffinSCHEDULE 13G/A · passive (13G) · 289.8K shares2.6%
Aug 14, 2026 · ↗ - Citadel GP LLCSCHEDULE 13G/A · passive (13G) · 53.3K shares0.5%
Aug 14, 2026 · ↗ - Citadel Advisors Holdings LPSCHEDULE 13G/A · passive (13G) · 53.3K shares0.5%
Aug 14, 2026 · ↗ - Citadel Advisors LLCSCHEDULE 13G/A · passive (13G) · 53.3K shares0.5%
Aug 14, 2026 · ↗ - Citadel Securities Group LPSCHEDULE 13G/A · passive (13G) · 236.4K shares2.1%
Aug 14, 2026 · ↗ - Citadel Securities LLCSCHEDULE 13G/A · passive (13G) · 233.4K shares2.1%
Aug 14, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming MEDIFAST INC as client
No lobbying filings found naming MEDIFAST INC as the client.
Government Contracts
Federal awards to MEDIFAST INC · USAspending
No federal contract awards found for MEDIFAST INC.
U.S. Patents
Recent USPTO applications naming MEDIFAST INC
No USPTO patent applications found for MEDIFAST INC.
Annual Financials
From MED's 10-K filings · XBRL
No annual XBRL figures on record for MED. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in MED's price history.
Material Events (8-K)
Corporate events filed with the SEC
- 8-K · Items 2.02, 9.01Results of operationsAug 3, 2026
EDGAR ↗ - 8-K · Items 7.01, 9.01Reg FD disclosureJul 17, 2026
EDGAR ↗ - 8-K · Items 5.02, 9.01Officer / director changeJun 1, 2026
EDGAR ↗ - 8-K · Items 5.02, 5.07, 7.01, 9.01Officer / director change · Shareholder vote · Reg FD disclosureMay 26, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsMay 4, 2026
EDGAR ↗
About MEDIFAST INC
From SEC EDGAR company records
Industry (SIC 2090)Miscellaneous Food Preparations & Kindred Products
SectorConsumer
HeadquartersBALTIMORE, MD
IncorporatedDE
SEC CIK0000910329 ↗
Former namesHEALTHRITE INC