MEDIFAST INC (MED) Institutional Shareholders
MEDIFAST INC (MED) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $87.94M in MED holdings during the latest filing period.
Renaissance Technologies LLC is currently the largest disclosed institutional shareholder of MED tracked by InsiderSet, reporting ownership valued at approximately $8.26M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $9.31M, representing an estimated gain of +12.72% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed MED value among the investors covered in this analysis. Major shareholders include Renaissance Technologies LLC, Steamboat Capital Partners, Llc, Two Sigma Investments, Lp, and several other long-term asset managers with concentrated positions in MEDIFAST INC (MED).
This page ranks the largest institutional MED shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
105
Total Reported Value
$87.94M
Largest Holder
Renaissance Technologies LLC
Largest Position
$8.26M
Insider Transactions (90d)
8
Latest Filing Quarter
Q2 2026
New Institutional Positions
148
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | Jim Simons | 0.01% | 778,610 | $8,261,052 | $9,312,176 | +$1,051,124 | +12.72% |
| Steamboat Capital Partners, Llc | 1.60% | 706,699 | $7,498,076 | $8,452,120 | +$954,044 | +12.72% | |
| Two Sigma Investments, Lp | 0.00% | 481,381 | $5,107,452 | $5,757,317 | +$649,865 | +12.72% | |
| Vanguard Capital Management Llc | 0.00% | 446,614 | $4,738,575 | $5,341,503 | +$602,928 | +12.72% | |
| Charles Schwab Investment Management Inc | 0.00% | 396,996 | $4,212,128 | $4,748,072 | +$535,944 | +12.72% | |
| Blackrock, Inc. | 0.00% | 369,503 | $3,920,427 | $4,419,256 | +$498,829 | +12.72% | |
| Dimensional Fund Advisors Lp | 0.00% | 363,394 | $3,855,669 | $4,346,192 | +$490,523 | +12.72% | |
| American Century Companies Inc | 0.00% | 318,911 | $3,383,646 | $3,814,176 | +$430,530 | +12.72% | |
| Morgan Stanley | 0.00% | 292,508 | $3,103,524 | $3,498,396 | +$394,872 | +12.72% | |
| Goldman Sachs Group Inc | 0.00% | 243,085 | $2,579,132 | $2,907,297 | +$328,165 | +12.72% | |
| Marshall Wace, Llp | 0.00% | 241,649 | $2,563,897 | $2,890,122 | +$326,225 | +12.72% | |
| Aqr Capital Management Llc | 0.00% | 236,434 | $2,508,564 | $2,827,751 | +$319,187 | +12.72% | |
| Peapod Lane Capital Llc | 1.59% | 222,576 | $2,361,531 | $2,662,009 | +$300,478 | +12.72% | |
| Lido Advisors, Llc | 0.01% | 220,337 | $2,337,779 | $2,635,231 | +$297,452 | +12.72% | |
| Trexquant Investment Lp | 0.01% | 212,684 | $2,256,577 | $2,543,701 | +$287,124 | +12.72% | |
| Jane Street Group, Llc | 0.00% | 164,881 | $1,749,388 | $1,971,977 | +$222,589 | +12.72% | |
| Commons Capital, Llc | 1.11% | 149,916 | $1,590,609 | $1,792,995 | +$202,386 | +12.72% | |
| Quinn Opportunity Partners Llc | 0.06% | 127,112 | $1,348,658 | $1,520,260 | +$171,602 | +12.72% | |
| Geode Capital Management, Llc | 0.00% | 121,071 | $1,285,312 | $1,448,009 | +$162,697 | +12.66% | |
| Bridgeway Capital Management, Llc | 0.02% | 117,078 | $1,242,198 | $1,400,253 | +$158,055 | +12.72% | |
| Rbf Capital, Llc | 0.05% | 109,000 | $1,156,490 | $1,303,640 | +$147,150 | +12.72% | |
| Jpmorgan Chase & Co | 0.00% | 92,512 | $989,878 | $1,106,444 | +$116,566 | +11.78% | |
| D. E. Shaw & Co., Inc. | 0.00% | 92,345 | $979,780 | $1,104,446 | +$124,666 | +12.72% | |
| Bank Of America Corp | 0.00% | 87,118 | $924,323 | $1,041,931 | +$117,608 | +12.72% | |
| Quantinno Capital Management Lp | 0.00% | 82,997 | $880,598 | $992,644 | +$112,046 | +12.72% | |
| Divisadero Street Capital Management, Lp | 0.02% | 79,839 | $847,092 | $954,874 | +$107,782 | +12.72% | |
| Virtus Family Office Llc | 0.66% | 79,060 | $838,827 | $945,558 | +$106,731 | +12.72% | |
| Tudor Investment Corp Et Al | 0.00% | 76,031 | $806,689 | $909,331 | +$102,642 | +12.72% | |
| Bnp Paribas Financial Markets | 0.00% | 73,878 | $783,846 | $883,581 | +$99,735 | +12.72% | |
| Federated Hermes, Inc. | 0.00% | 69,605 | $738,509 | $832,476 | +$93,967 | +12.72% | |
| Empowered Funds, Llc | 0.00% | 66,105 | $701,374 | $790,616 | +$89,242 | +12.72% | |
| Vanguard Fiduciary Trust Co | 0.00% | 63,337 | $672,006 | $757,511 | +$85,505 | +12.72% | |
| Atom Investors Lp | 0.06% | 62,119 | $659,083 | $742,943 | +$83,860 | +12.72% | |
| Citadel Advisors Llc | 0.00% | 56,350 | $597,873 | $673,946 | +$76,073 | +12.72% | |
| State Street Corp | 0.00% | 52,319 | $555,105 | $625,735 | +$70,630 | +12.72% | |
| Great Lakes Advisors, Llc | 0.00% | 51,611 | $547,593 | $617,268 | +$69,675 | +12.72% | |
| Ubs Group Ag | 0.00% | 50,223 | $532,866 | $600,667 | +$67,801 | +12.72% | |
| Engineers Gate Manager Lp | 0.01% | 49,829 | $528,686 | $595,955 | +$67,269 | +12.72% | |
| Millennium Management Llc | 0.00% | 47,906 | $508,283 | $572,956 | +$64,673 | +12.72% | |
| Summerhaven Investment Management, Llc | 0.27% | 47,835 | $507,529 | $572,107 | +$64,578 | +12.72% | |
| Centiva Capital, Lp | 0.02% | 44,432 | $471,424 | $531,407 | +$59,983 | +12.72% | |
| Susquehanna Portfolio Strategies, Llc | 0.01% | 41,777 | $443,254 | $499,653 | +$56,399 | +12.72% | |
| Jump Financial, Llc | 0.00% | 40,500 | $429,705 | $484,380 | +$54,675 | +12.72% | |
| Gsa Capital Partners Llp | 0.03% | 38,443 | $408,000 | $459,778 | +$51,778 | +12.69% | |
| Victory Capital Management Inc | 0.00% | 35,655 | $378,300 | $426,434 | +$48,134 | +12.72% | |
| Jain Global Llc | 0.00% | 35,223 | $373,716 | $421,267 | +$47,551 | +12.72% | |
| Pdt Partners, Llc | 0.02% | 32,756 | $347,541 | $391,762 | +$44,221 | +12.72% | |
| Price T Rowe Associates Inc | 0.00% | 32,378 | $344,000 | $387,241 | +$43,241 | +12.57% | |
| Xtx Topco Ltd | 0.00% | 30,654 | $325,239 | $366,622 | +$41,383 | +12.72% | |
| Marquette Asset Management, Llc | 0.04% | 30,038 | $318,704 | $359,254 | +$40,550 | +12.72% |
Frequently asked questions about MED
Who owns the most MED stock?
The largest holders of MED are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MEDIFAST INC (MED).
Is MED widely held by superinvestors?
Many widely followed stocks like MED appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MED is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.