MED Institutional Ownership & Shareholders
MEDIFAST INC (MED) is currently held by 102 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $87.57M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
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 $9.05M, representing an estimated gain of +9.52% 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
102
Total Reported Value
$87.57M
Largest Holder
Renaissance Technologies LLC
Largest Position
$8.26M
Insider Transactions (90d)
10
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 | $9,047,448 | +$786,396 | +9.52% |
| Steamboat Capital Partners, Llc | 1.60% | 706,699 | $7,498,076 | $8,211,842 | +$713,766 | +9.52% | |
| Two Sigma Investments, Lp | 0.00% | 481,381 | $5,107,452 | $5,593,647 | +$486,195 | +9.52% | |
| Vanguard Capital Management Llc | 0.00% | 446,614 | $4,738,575 | $5,189,655 | +$451,080 | +9.52% | |
| Charles Schwab Investment Management Inc | 0.00% | 396,996 | $4,212,128 | $4,613,094 | +$400,966 | +9.52% | |
| Blackrock, Inc. | 0.00% | 369,503 | $3,920,427 | $4,293,625 | +$373,198 | +9.52% | |
| Dimensional Fund Advisors Lp | 0.00% | 363,394 | $3,855,669 | $4,222,638 | +$366,969 | +9.52% | |
| American Century Companies Inc | 0.00% | 318,911 | $3,383,646 | $3,705,746 | +$322,100 | +9.52% | |
| Morgan Stanley | 0.00% | 292,508 | $3,103,524 | $3,398,943 | +$295,419 | +9.52% | |
| Goldman Sachs Group Inc | 0.00% | 243,085 | $2,579,132 | $2,824,648 | +$245,516 | +9.52% | |
| Marshall Wace, Llp | 0.00% | 241,649 | $2,563,897 | $2,807,961 | +$244,064 | +9.52% | |
| Aqr Capital Management Llc | 0.00% | 236,434 | $2,508,564 | $2,747,363 | +$238,799 | +9.52% | |
| Peapod Lane Capital Llc | 1.59% | 222,576 | $2,361,531 | $2,586,333 | +$224,802 | +9.52% | |
| Lido Advisors, Llc | 0.01% | 220,337 | $2,337,779 | $2,560,316 | +$222,537 | +9.52% | |
| Trexquant Investment Lp | 0.01% | 212,684 | $2,256,577 | $2,471,388 | +$214,811 | +9.52% | |
| Jane Street Group, Llc | 0.00% | 164,881 | $1,749,388 | $1,915,917 | +$166,529 | +9.52% | |
| Commons Capital, Llc | 1.11% | 149,916 | $1,590,609 | $1,742,024 | +$151,415 | +9.52% | |
| Quinn Opportunity Partners Llc | 0.06% | 127,112 | $1,348,658 | $1,477,041 | +$128,383 | +9.52% | |
| Geode Capital Management, Llc | 0.00% | 121,071 | $1,285,312 | $1,406,845 | +$121,533 | +9.46% | |
| Bridgeway Capital Management, Llc | 0.02% | 117,078 | $1,242,198 | $1,360,446 | +$118,248 | +9.52% | |
| Rbf Capital, Llc | 0.05% | 109,000 | $1,156,490 | $1,266,580 | +$110,090 | +9.52% | |
| Jpmorgan Chase & Co | 0.00% | 92,512 | $989,878 | $1,074,989 | +$85,111 | +8.60% | |
| D. E. Shaw & Co., Inc. | 0.00% | 92,345 | $979,780 | $1,073,049 | +$93,269 | +9.52% | |
| Bank Of America Corp | 0.00% | 87,118 | $924,323 | $1,012,311 | +$87,988 | +9.52% | |
| Quantinno Capital Management Lp | 0.00% | 82,997 | $880,598 | $964,425 | +$83,827 | +9.52% | |
| Divisadero Street Capital Management, Lp | 0.02% | 79,839 | $847,092 | $927,729 | +$80,637 | +9.52% | |
| Virtus Family Office Llc | 0.66% | 79,060 | $838,827 | $918,677 | +$79,850 | +9.52% | |
| Tudor Investment Corp Et Al | 0.00% | 76,031 | $806,689 | $883,480 | +$76,791 | +9.52% | |
| Bnp Paribas Financial Markets | 0.00% | 73,878 | $783,846 | $858,462 | +$74,616 | +9.52% | |
| Federated Hermes, Inc. | 0.00% | 69,605 | $738,509 | $808,810 | +$70,301 | +9.52% | |
| Empowered Funds, Llc | 0.00% | 66,105 | $701,374 | $768,140 | +$66,766 | +9.52% | |
| Vanguard Fiduciary Trust Co | 0.00% | 63,337 | $672,006 | $735,976 | +$63,970 | +9.52% | |
| Atom Investors Lp | 0.06% | 62,119 | $659,083 | $721,823 | +$62,740 | +9.52% | |
| Citadel Advisors Llc | 0.00% | 56,350 | $597,873 | $654,787 | +$56,914 | +9.52% | |
| State Street Corp | 0.00% | 52,319 | $555,105 | $607,947 | +$52,842 | +9.52% | |
| Great Lakes Advisors, Llc | 0.00% | 51,611 | $547,593 | $599,720 | +$52,127 | +9.52% | |
| Ubs Group Ag | 0.00% | 50,223 | $532,866 | $583,591 | +$50,725 | +9.52% | |
| Engineers Gate Manager Lp | 0.01% | 49,829 | $528,686 | $579,013 | +$50,327 | +9.52% | |
| Millennium Management Llc | 0.00% | 47,906 | $508,283 | $556,668 | +$48,385 | +9.52% | |
| Summerhaven Investment Management, Llc | 0.27% | 47,835 | $507,529 | $555,843 | +$48,314 | +9.52% | |
| Centiva Capital, Lp | 0.02% | 44,432 | $471,424 | $516,300 | +$44,876 | +9.52% | |
| Susquehanna Portfolio Strategies, Llc | 0.01% | 41,777 | $443,254 | $485,449 | +$42,195 | +9.52% | |
| Jump Financial, Llc | 0.00% | 40,500 | $429,705 | $470,610 | +$40,905 | +9.52% | |
| Gsa Capital Partners Llp | 0.03% | 38,443 | $408,000 | $446,708 | +$38,708 | +9.49% | |
| Victory Capital Management Inc | 0.00% | 35,655 | $378,300 | $414,311 | +$36,011 | +9.52% | |
| Jain Global Llc | 0.00% | 35,223 | $373,716 | $409,291 | +$35,575 | +9.52% | |
| Pdt Partners, Llc | 0.02% | 32,756 | $347,541 | $380,625 | +$33,084 | +9.52% | |
| Price T Rowe Associates Inc | 0.00% | 32,378 | $344,000 | $376,232 | +$32,232 | +9.37% | |
| Xtx Topco Ltd | 0.00% | 30,654 | $325,239 | $356,199 | +$30,960 | +9.52% | |
| Vanguard Portfolio Management Llc | 0.00% | 29,108 | $308,836 | $338,235 | +$29,399 | +9.52% |
Frequently asked questions about MED
Who are the largest institutional holders of MED?
The largest institutional holders of MED reported in the latest SEC Form 13F filings include Renaissance Technologies LLC, Steamboat Capital Partners, Llc, Two Sigma Investments, Lp, Vanguard Capital Management Llc, and Charles Schwab Investment Management Inc. InsiderSet ranks institutional holders by their latest reported MED position.
What is MED institutional ownership?
This page tracks MED positions reported by institutional investment managers through SEC Form 13F. MEDIFAST INC (MED) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MED?
InsiderSet currently tracks 102 institutional managers reporting MED holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MED shareholders.
How much MED stock do institutions own?
Institutional investment managers disclosed approximately $87.57M in MED holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MED institutional ownership last updated?
The latest MED institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MED holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MED position after the reporting date.
Are institutions buying or selling MED?
Institutional buying and selling can be analyzed by comparing MED positions across consecutive 13F reporting periods. InsiderSet's MED Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MED ownership changes.
How has MED institutional ownership changed over time?
InsiderSet tracks MED institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.