Jane Street
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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
2026
Q1 		$1.42M Sell
139,100
-121,100
-47% -$1.31M ﹤0.01% 5755
2025
Q4 		$2.78M Sell
260,200
-159,700
-38% -$1.91M ﹤0.01% 4179
2025
Q3 		$5.74M Buy
419,900
+226,600
+117% +$3.17M ﹤0.01% 3222
2025
Q2 		$2.72M Buy
193,300
+156,300
+422% +$2.05M ﹤0.01% 3929
2025
Q1 		$499K Buy
+37,000
New +$556K ﹤0.01% 6868
2024
Q3 		– Sell
-9,300
Closed -$203K – 10088
2024
Q2 		$203K Sell
9,300
-6,400
-41% -$171K ﹤0.01% 8365
2024
Q1 		$602K Buy
15,700
+11,400
+265% +$552K ﹤0.01% 6327
2023
Q4 		$289K Sell
4,300
-700
-14% -$48.8K ﹤0.01% 7644
2023
Q3 		$374K Sell
5,000
-100
-2% -$8.87K ﹤0.01% 6708
2023
Q2 		$470K Buy
5,100
+2,200
+76% +$196K ﹤0.01% 6413
2023
Q1 		$301K Buy
+2,900
New +$321K ﹤0.01% 7196
2022
Q4 		– Sell
-1,900
Closed -$206K – 9729
2022
Q3 		$206K Sell
1,900
-1,100
-37% -$158K ﹤0.01% 8136
2022
Q2 		$542K Buy
+3,000
New +$537K ﹤0.01% 6599
2022
Q1 		– Sell
-1,700
Closed -$356K – 10734
2021
Q4 		$356K Sell
1,700
-4,300
-72% -$889K ﹤0.01% 7866
2021
Q3 		$1.16M Buy
6,000
+2,400
+67% +$590K ﹤0.01% 5623
2021
Q2 		$1.02M Buy
+3,600
New +$976K ﹤0.01% 5801
2021
Q1 		– Sell
-10,400
Closed -$2.04M – 9401
2020
Q4 		$2.04M Sell
10,400
-52,000
-83% -$9.19M ﹤0.01% 3449
2020
Q3 		$10.3M Buy
62,400
+53,700
+617% +$8.84M 0.01% 1193
2020
Q2 		$1.21M Buy
+8,700
New +$799K ﹤0.01% 3795
2020
Q1 		– Sell
-4,800
Closed -$526K – 5718
2019
Q4 		$526K Buy
+4,800
New +$465K ﹤0.01% 3629

Other funds holding MED

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
SCP
Steamboat Capital Partners Rye, New York $403M AUM 43.57% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Man Group
Man Group London, United Kingdom $55.1B AUM 24.23% 1-Year Est. Return

Jane Street's MED Position: Q1 2026 in Review

Jane Street opened a new position in Medifast (MED) in Q1 2026: 126,407 shares worth $1.29M. The stake represents ﹤0.01% of the portfolio and ranks #5955 among its holdings. This is a return to the name: Jane Street previously reported a position in MED as recently as Q4 2024.

Jane Street first reported a position in MED in Q3 2013 and has held it in 23 quarters since. The position peaked at $5.74M in Q2 2024. 111 funds tracked by Wall St. Rank hold MED as of Q1 2026.

  • Jane Street held 126,407 shares of Medifast worth $1.29M as of Q1 2026.
  • Medifast was a new Jane Street position in Q1 2026.
  • Medifast made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #5955 holding.
  • Jane Street first reported a position in Medifast in Q3 2013 and has held it in 23 quarters since.
  • Jane Street's Medifast position peaked at $5.74M in Q2 2024.
  • 111 funds tracked by Wall St. Rank held Medifast as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.