Jane Street’s Medifast MED Stock Holding History

Jane Street’s Portfolio MED Stock Details MED Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2024 Q3	–	Sell	-12,400	Closed	-$271K	–	10089
2024 Q2	$271K	Sell	12,400 -5,300	-30%	-$141K	﹤0.01%	7959
2024 Q1	$678K	Buy	17,700 +8,700	+97%	+$421K	﹤0.01%	6132
2023 Q4	$605K	Sell	9,000 -2,200	-20%	-$153K	﹤0.01%	6440
2023 Q3	$838K	Buy	11,200 +4,500	+67%	+$399K	﹤0.01%	5460
2023 Q2	$617K	Hold	6,700	–	–	﹤0.01%	5992
2023 Q1	$695K	Buy	6,700 +2,200	+49%	+$244K	﹤0.01%	5732
2022 Q4	$519K	Sell	4,500 -1,200	-21%	-$140K	﹤0.01%	6066
2022 Q3	$618K	Buy	5,700 +3,700	+185%	+$530K	﹤0.01%	6294
2022 Q2	$361K	Buy	+2,000	New	+$358K	﹤0.01%	7296
2021 Q4	–	Sell	-4,200	Closed	-$809K	–	10531
2021 Q3	$809K	Sell	4,200 -1,600	-28%	-$393K	﹤0.01%	6337
2021 Q2	$1.64M	Buy	5,800 +4,500	+346%	+$1.22M	﹤0.01%	4742
2021 Q1	$275K	Buy	+1,300	New	+$311K	﹤0.01%	7821
2020 Q3	–	Sell	-5,800	Closed	-$805K	–	7607
2020 Q2	$805K	Buy	+5,800	New	+$533K	﹤0.01%	4391
2020 Q1	–	Sell	-2,200	Closed	-$241K	–	5720
2019 Q4	$241K	Sell	2,200 -800	-27%	-$77.4K	﹤0.01%	4538
2019 Q3	$311K	Buy	+3,000	New	+$322K	﹤0.01%	4137

Other funds holding MED

Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

SCP

Steamboat Capital Partners Rye, New York $468M AUM 80.81% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Jane Street's MED Position: Q2 2026 in Review

Jane Street increased its Medifast (MED) stake by 30% in Q2 2026, buying an estimated $444K and bringing the position to 164,881 shares worth $1.75M. The position accounts for ﹤0.01% of the portfolio, ranked #5433.

Jane Street first reported a position in MED in Q3 2013 and has held it in 24 quarters since. The position peaked at $5.74M in Q2 2024. 112 funds tracked by Wall St. Rank hold MED as of Q2 2026.

Jane Street held 164,881 shares of Medifast worth $1.75M as of Q2 2026.
Jane Street bought 38,474 Medifast shares in Q2 2026, an estimated $444K.
Medifast made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #5433 holding.
Jane Street first reported a position in Medifast in Q3 2013 and has held it in 24 quarters since.
Jane Street's Medifast position peaked at $5.74M in Q2 2024.
112 funds tracked by Wall St. Rank held Medifast as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.