Latest Period
Q1 2026
Security Snapshot
MEDIFAST INC - Common Stock, par value $0.001 per share (the "Shares") (MED) Institutional Ownership
CUSIP: 58470H101
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
110
Shares (Excl. Options)
8,602,468
Price
$10.19
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- Security type / class
- Equity / Common Stock, par value $0.001 per share (the "Shares")
- Symbol
- MED on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 8,602,468
- Total 13F value
- $87,639,525
- Portfolio coverage rank
- 0%
- Share change
- +522,594
- Value change
- +$5,082,323
- Number of holders
- 110
- Shares outstanding
- 11,014,000
- SEC-reported price per share
- $13.15
- Insider filing price
- $13.15
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MED - MEDIFAST INC - Common Stock, par value $0.001 per share (the "Shares") is tracked under CUSIP 58470H101.
- 110 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 107 to 110 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $86,510,994 to $87,639,525.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 110 institutions filings for Q1 2026.
Security key
58470H101
Latest holder period
Q1 2026
13F holders
110
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
MED full holder history
MEDIFAST INC SEC filings
MEDIFAST INC company facts
MEDIFAST INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 58470H101:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
MED
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 7% | -14% | $8,139,429 | -$1,212,093 | 773,710 | -13% | Renaissance Technologies LLC | 02 Jan 2026 |
| Citadel Securities GP LLC | 6.5% | $7,531,373 | 715,910 | Citadel Securities GP LLC | 31 Mar 2026 | |||
| Steamboat Capital Partners, LLC | 6% | $6,858,664 | 657,590 | Steamboat Capital Partners, LLC | 13 Mar 2026 | |||
| SUSQUEHANNA SECURITIES, LLC | 1.4% | -77% | $1,741,155 | -$5,915,152 | 148,944 | -77% | G1 Execution Services, LLC | 31 Dec 2025 |
As of 31 Mar 2026, 110 institutional investors reported holding 8,602,468 shares of MEDIFAST INC - Common Stock, par value $0.001 per share (the "Shares") (MED). This represents 78% of the company’s total 11,014,000 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
67%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.6% | 944,453 | +3.2% | 0% | $9,623,975 |
| RENAISSANCE TECHNOLOGIES LLC | 7% | 773,710 | -0.88% | 0.01% | $7,884,105 |
| Steamboat Capital Partners, LLC | 6.4% | 707,590 | +156% | 1.8% | $7,210,342 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 5.7% | 631,539 | -19% | 0% | $6,435,382 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4% | 444,467 | 0% | 0% | $4,529,119 |
| DIMENSIONAL FUND ADVISORS LP | 3.3% | 361,762 | +11% | 0% | $3,686,270 |
| TWO SIGMA INVESTMENTS, LP | 3.1% | 338,158 | +321% | 0% | $3,445,830 |
| MORGAN STANLEY | 3% | 325,311 | -2.9% | 0% | $3,314,924 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.3% | 253,315 | +2.4% | 0% | $2,581,952 |
| Man Group plc | 2.1% | 236,212 | -0.12% | 0% | $2,407,000 |
| AMERICAN CENTURY COMPANIES INC | 2% | 224,280 | +3% | 0% | $2,285,413 |
| STATE STREET CORP | 2% | 222,638 | +0.42% | 0% | $2,268,681 |
| Peapod Lane Capital LLC | 2% | 219,063 | +116% | 1.8% | $2,213,788 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.8% | 202,829 | 0% | 0% | $2,066,828 |
| Lido Advisors, LLC | 1.7% | 183,035 | -45% | 0.01% | $1,865,130 |
| Trexquant Investment LP | 1.6% | 180,081 | +42% | 0.01% | $1,835,025 |
| D. E. Shaw & Co., Inc. | 1.5% | 160,564 | -27% | 0% | $1,636,147 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 1.4% | 157,078 | +33% | 0.03% | $1,600,625 |
| GOLDMAN SACHS GROUP INC | 1.4% | 153,171 | -15% | 0% | $1,560,812 |
| AQR CAPITAL MANAGEMENT LLC | 1.3% | 145,575 | +11% | 0% | $1,483,408 |
| Quinn Opportunity Partners LLC | 1.2% | 127,112 | 0% | 0.07% | $1,295,271 |
| JANE STREET GROUP, LLC | 1.1% | 126,407 | 0% | $1,288,087 | |
| NORTHERN TRUST CORP | 0.84% | 92,595 | +5.6% | 0% | $943,544 |
| Jump Financial, LLC | 0.83% | 90,875 | 0.01% | $926,016 | |
| BANK OF AMERICA CORP /DE/ | 0.81% | 88,777 | -8.9% | 0% | $904,637 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 8,602,468 | $87,639,525 | +$5,082,323 | $10.19 | 110 |
| 2025 Q4 | 8,054,001 | $86,510,994 | -$13,371,466 | $10.68 | 107 |
| 2025 Q3 | 9,231,593 | $126,175,997 | +$8,181,617 | $13.67 | 121 |
| 2025 Q2 | 8,622,468 | $121,151,406 | +$5,639,293 | $14.05 | 119 |
| 2025 Q1 | 8,243,161 | $111,111,582 | -$12,305,056 | $13.48 | 122 |
| 2024 Q4 | 8,923,034 | $157,184,942 | -$4,774,951 | $17.62 | 129 |
| 2024 Q3 | 9,163,523 | $175,430,199 | -$26,787,069 | $19.14 | 139 |
| 2024 Q2 | 10,429,064 | $227,557,862 | -$54,011,494 | $21.82 | 157 |
| 2024 Q1 | 11,481,133 | $439,976,756 | +$30,953,025 | $38.32 | 184 |
| 2023 Q4 | 10,327,821 | $694,235,115 | +$41,374,328 | $67.22 | 216 |
| 2023 Q3 | 9,665,221 | $724,203,937 | -$8,659,421 | $74.85 | 222 |
| 2023 Q2 | 9,669,541 | $891,905,428 | -$61,913,795 | $92.16 | 234 |
| 2023 Q1 | 10,234,973 | $1,061,341,644 | +$86,814,952 | $103.67 | 261 |
| 2022 Q4 | 9,414,287 | $1,086,305,314 | -$11,929,284 | $115.35 | 273 |
| 2022 Q3 | 9,527,598 | $1,033,430,006 | -$59,199,848 | $108.36 | 246 |
| 2022 Q2 | 9,687,197 | $1,748,984,608 | -$24,539,021 | $180.51 | 271 |
| 2022 Q1 | 9,926,997 | $1,697,651,687 | +$16,771,177 | $170.78 | 279 |
| 2021 Q4 | 9,781,823 | $2,049,223,135 | -$47,927,471 | $209.43 | 293 |
| 2021 Q3 | 9,994,460 | $1,926,341,111 | -$26,844,446 | $192.64 | 289 |
| 2021 Q2 | 9,961,273 | $2,819,353,209 | +$76,744,435 | $282.98 | 294 |
| 2021 Q1 | 9,730,211 | $2,062,202,677 | -$49,579,570 | $211.82 | 270 |
| 2020 Q4 | 9,997,947 | $1,963,691,126 | -$25,626,899 | $196.34 | 255 |
| 2020 Q3 | 10,066,415 | $1,655,403,260 | -$331,394,781 | $164.45 | 237 |
| 2020 Q2 | 12,151,352 | $1,686,977,900 | -$24,806,617 | $138.77 | 220 |
| 2020 Q1 | 12,405,204 | $775,864,757 | -$71,958,765 | $62.50 | 190 |