MEDIFAST INC

MEDNYSE

$11.73+0.30 (+2.62%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

MEDIFAST INC price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-14.2%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Renaissance Technologies LLC	6.96%	$8.26M	0.01%	Not reported
Steamboat Capital Partners, LLC	6.32%	$7.5M	1.60%	Reduce 0.13%
Two Sigma Investments, LP	4.31%	$5.11M	0.00%	Not reported
Vanguard Capital Management LLC	3.99%	$4.74M	0.00%	Not reported
Charles Schwab Investment Management Inc	3.55%	$4.21M	0.00%	Not reported
BlackRock, Inc.	3.30%	$3.92M	0.00%	Not reported
Dimensional Fund Advisors LP	3.25%	$3.86M	0.00%	Not reported
American Century Companies Inc	2.85%	$3.38M	0.00%	Not reported
Morgan Stanley	2.62%	$3.1M	0.00%	Not reported
Goldman Sachs Group Inc	2.17%	$2.58M	0.00%	Not reported
Marshall Wace, LLP	2.16%	$2.56M	0.00%	Not reported
AQR Capital Management LLC	2.11%	$2.51M	0.00%	Not reported
Peapod Lane Capital LLC	1.99%	$2.36M	1.59%	Not reported
Lido Advisors, LLC	1.97%	$2.34M	0.01%	Add 20.38%
Trexquant Investment LP	1.90%	$2.26M	0.01%	Not reported
Jane Street Group, LLC	1.47%	$1.75M	0.00%	Not reported
Commons Capital, LLC	1.34%	$1.59M	1.11%	Add 294.52%
Quinn Opportunity Partners LLC	1.14%	$1.35M	0.06%	Not reported
Geode Capital Management, LLC	1.08%	$1.29M	0.00%	Not reported
Bridgeway Capital Management, LLC	1.05%	$1.24M	0.02%	Not reported
RBF Capital, LLC	0.97%	$1.16M	0.05%	New Not reported
JPMorgan Chase & Co	0.83%	$990K	0.00%	Not reported
D. E. Shaw & Co., Inc.	0.83%	$980K	0.00%	Not reported
Bank of America Corp	0.78%	$924K	0.00%	Not reported
Quantinno Capital Management LP	0.74%	$881K	0.00%	Add 47.81%
Divisadero Street Capital Management, LP	0.71%	$847K	0.02%	Not reported
Virtus Family Office LLC	0.71%	$839K	0.66%	Not reported
Tudor Investment Corp Et Al	0.68%	$807K	0.00%	Not reported
BNP Paribas Financial Markets	0.66%	$784K	0.00%	Not reported
Federated Hermes, Inc.	0.62%	$739K	0.00%	Not reported
Empowered Funds, LLC	0.59%	$701K	0.00%	Reduce 7.65%
Vanguard Fiduciary Trust Co	0.57%	$672K	0.00%	Not reported
Atom Investors LP	0.56%	$659K	0.06%	Not reported
Citadel Advisors LLC	0.50%	$598K	0.00%	Not reported
State Street Corp	0.47%	$555K	0.00%	Not reported
Great Lakes Advisors, LLC	0.46%	$548K	0.00%	New Not reported
UBS Group AG	0.45%	$533K	0.00%	Not reported
Engineers Gate Manager LP	0.45%	$529K	0.01%	Not reported
Millennium Management LLC	0.43%	$508K	0.00%	Not reported
SummerHaven Investment Management, LLC	0.43%	$508K	0.27%	Not reported
Centiva Capital, LP	0.40%	$471K	0.00%	Not reported
Susquehanna Portfolio Strategies, LLC	0.37%	$443K	0.01%	New Not reported
Jump Financial, LLC	0.36%	$430K	0.00%	Not reported
Gsa Capital Partners LLP	0.34%	$408K	0.03%	Not reported
Victory Capital Management Inc	0.32%	$378K	0.00%	Not reported
Jain Global LLC	0.32%	$374K	0.00%	New Not reported
PDT Partners, LLC	0.29%	$348K	0.02%	Add 6.62%
XTX Topco Ltd	0.27%	$325K	0.00%	Not reported
Marquette Asset Management, LLC	0.27%	$319K	0.04%	Not reported
Vanguard Portfolio Management LLC	0.26%	$309K	0.00%	Not reported

50 of 110 holders

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