Medifast, Inc.
US ˙ NYSE ˙ US58470H1014

SecurityMED / Medifast, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership39,580 shares
Latest Disclosed Value $ 403,320
Engineers Gate Manager LP ownership in MED / Medifast, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 39,580 shares of Medifast, Inc. (US:MED) valued at $403,320 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 14, 2025 disclosing 0 shares of Medifast, Inc.. The current value of the position is $484,459 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MEDIFAST COM 58470H101 39,580 39,580 403 0.0050
2025-11-14 2025-09-30 13F MEDIFAST COM 58470H101 0 -11,451 -100.00 0 -100.00
2025-08-14 2025-06-30 13F MEDIFAST COM 58470H101 11,451 11,451 161 0.0020
2025-05-15 2025-03-31 13F MEDIFAST COM 58470H101 0 -17,333 -100.00 0 -100.00
2025-02-14 2024-12-31 13F MEDIFAST COM 58470H101 17,333 -5,920 -25.46 305 -31.46 0.0053
2024-11-14 2024-09-30 13F MEDIFAST COM 58470H101 23,253 -9,625 -29.27 445 -37.94 0.0087
2024-08-14 2024-06-30 13F MEDIFAST COM 58470H101 32,878 32,878 717 0.0162
2024-05-15 2024-03-31 13F MEDIFAST COM 58470H101 0 -7,227 -100.00 0 -100.00
2024-02-14 2023-12-31 13F MEDIFAST COM 58470H101 7,227 -17,298 -70.53 486 -73.57 0.0139
2023-11-14 2023-09-30 13F MEDIFAST COM 58470H101 24,525 -14,509 -37.17 1,836 -48.99 0.0679
2023-08-14 2023-06-30 13F MEDIFAST COM 58470H101 39,034 4,422 12.78 3,597 0.25 0.1360
2023-05-15 2023-03-31 13F MEDIFAST COM 58470H101 34,612 22,773 192.36 3,588 162.86 0.1499
2023-02-14 2022-12-31 13F MEDIFAST COM 58470H101 11,839 2,064 21.12 1,366 28.90 0.0820
2022-11-14 2022-09-30 13F MEDIFAST COM 58470H101 9,775 9,775 1,059 0.0659
2022-08-15 2022-06-30 13F MEDIFAST COM 58470H101 0 -11,116 -100.00 0 -100.00
2022-05-16 2022-03-31 13F MEDIFAST COM 58470H101 11,116 6,962 167.60 1,898 118.16 0.0743
2022-02-14 2021-12-31 13F MEDIFAST COM 58470H101 4,154 -10,749 -72.13 870 -69.70 0.0391
2021-11-15 2021-09-30 13F MEDIFAST COM 58470H101 14,903 5,784 63.43 2,871 11.28 0.1636
2021-08-16 2021-06-30 13F MEDIFAST COM 58470H101 9,119 -2,544 -21.81 2,580 4.45 0.1659
2021-05-17 2021-03-31 13F MEDIFAST COM 58470H101 11,663 9,325 398.85 2,470 438.13 0.1224
2021-02-16 2020-12-31 13F MEDIFAST COM 58470H101 2,338 -9,321 -79.95 459 -76.06 0.0199
2020-11-16 2020-09-30 13F MEDIFAST COM 58470H101 11,659 1,231 11.80 1,917 32.48 0.0899
2020-08-17 2020-06-30 13F MEDIFAST COM 58470H101 10,428 1,673 19.11 1,447 164.53 0.0736
2020-05-15 2020-03-31 13F MEDIFAST COM 58470H101 8,755 8,755 547 0.0394
2018-11-01 2018-09-30 13F MEDIFAST COM 58470H101 0 -12,238 -100.00 0 -100.00
2018-08-03 2018-06-30 13F MEDIFAST COM 58470H101 12,238 -9,967 -44.89 1,960 -5.54 0.1528
2018-05-07 2018-03-31 13F MEDIFAST COM 58470H101 22,205 22,205 2,075 0.1383
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.