Medifast, Inc.
MX ˙ BMV ˙ US58470H1014
SecurityMX:MED / Medifast, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership92,595 shares
Latest Disclosed Value $ 943,544
Northern Trust Corp reports 5.63% increase in ownership of MED / Medifast, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 92,595 shares of Medifast, Inc. (MX:MED) valued at $943,544 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 87,662 shares of Medifast, Inc.. This represents a change in shares of 5.63% during the quarter.

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)
2026-05-14 2026-03-31 13F MEDIFAST COM 58470H101 92,595 4,933 5.63 944 0.75 0.0000
2026-02-17 2025-12-31 13F MEDIFAST COM 58470H101 87,662 -8,113 -8.47 936 -28.50 0.0001
2025-11-14 2025-09-30 13F MEDIFAST COM 58470H101 95,775 3,514 3.81 1,309 1.00 0.0002
2025-08-13 2025-06-30 13F MEDIFAST COM 58470H101 92,261 -4,629 -4.78 1,296 -0.77 0.0002
2025-05-13 2025-03-31 13F MEDIFAST COM 58470H101 96,890 -4,885 -4.80 1,306 -27.16 0.0002
2025-02-14 2024-12-31 13F MEDIFAST COM 58470H101 101,775 871 0.86 1,793 -7.15 0.0003
2024-11-13 2024-09-30 13F MEDIFAST COM 58470H101 100,904 -1,257 -1.23 1,931 -13.37 0.0003
2024-08-14 2024-06-30 13F MEDIFAST COM 58470H101 102,161 -17,090 -14.33 2,229 -51.21 0.0004
2024-05-14 2024-03-31 13F MEDIFAST COM 58470H101 119,251 -6,291 -5.01 4,570 -45.85 0.0008
2024-02-13 2023-12-31 13F MEDIFAST COM 58470H101 125,542 -586 -0.46 8,439 -10.61 0.0015
2023-11-13 2023-09-30 13F MEDIFAST COM 58470H101 126,128 3,178 2.58 9,441 -16.69 0.0018
2023-08-11 2023-06-30 13F MEDIFAST COM 58470H101 122,950 -3,615 -2.86 11,331 -13.64 0.0022
2023-05-15 2023-03-31 13F MEDIFAST COM 58470H101 126,565 552 0.44 13,121 -9.74 0.0026
2023-02-13 2022-12-31 13F MEDIFAST COM 58470H101 126,013 4,159 3.41 14,536 10.07 0.0031
2022-11-14 2022-09-30 13F MEDIFAST COM 58470H101 121,854 -4,996 -3.94 13,205 -42.33 0.0030
2022-08-12 2022-06-30 13F MEDIFAST COM 58470H101 126,850 -4,304 -3.28 22,898 2.23 0.0049
2022-05-13 2022-03-31 13F MEDIFAST COM 58470H101 131,154 -5,122 -3.76 22,398 -21.52 0.0039
2022-02-08 2021-12-31 13F MEDIFAST COM 58470H101 136,276 -4,027 -2.87 28,540 5.59 0.0047
2021-11-15 2021-09-30 13F MEDIFAST COM 58470H101 140,303 -4,122 -2.85 27,028 -33.87 0.0048
2021-08-13 2021-06-30 13F MEDIFAST COM 58470H101 144,425 -1,738 -1.19 40,869 32.01 0.0072
2021-05-12 2021-03-31 13F MEDIFAST COM 58470H101 146,163 -11,442 -7.26 30,960 0.05 0.0058
2021-02-11 2020-12-31 13F MEDIFAST COM 58470H101 157,605 -5,300 -3.25 30,945 15.51 0.0060
2020-11-16 2020-09-30 13F MEDIFAST COM 58470H101 162,905 -9,852 -5.70 26,790 11.75 0.0059
2020-08-14 2020-06-30 13F MEDIFAST COM 58470H101 172,757 13,892 8.74 23,973 141.44 0.0057
2020-05-14 2020-03-31 13F MEDIFAST COM 58470H101 158,865 3,652 2.35 9,929 -41.63 0.0029
2020-02-14 2019-12-31 13F MEDIFAST COM 58470H101 155,213 -10,111 -6.12 17,009 -0.72 0.0038
2019-11-13 2019-09-30 13F MEDIFAST COM 58470H101 165,324 697 0.42 17,132 -18.89 0.0041
2019-08-13 2019-06-30 13F MEDIFAST COM 58470H101 164,627 1,610 0.99 21,121 1.58 0.0050
2019-05-13 2019-03-31 13F MEDIFAST COM 58470H101 163,017 6,188 3.95 20,792 6.05 0.0051
2019-02-12 2018-12-31 13F MEDIFAST COM 58470H101 156,829 -2,760 -1.73 19,606 -44.55 0.0055
2018-11-14 2018-09-30 13F MEDIFAST COM 58470H101 159,589 8,537 5.65 35,357 46.15 0.0087
2018-09-18 2018-06-30 13F/A-1 MEDIFAST COM 58470H101 151,052 15,400 11.35 24,193 90.84 0.0061
2018-08-14 2018-06-30 13F MEDIFAST COM 58470H101 151,783 16,131 24,310
2018-05-09 2018-03-31 13F MEDIFAST COM 58470H101 135,652 -1,231 -0.90 12,677 32.67 0.0033
2018-02-14 2017-12-31 13F MEDIFAST COM 58470H101 136,883 -277 -0.20 9,555 17.31 0.0024
2017-11-13 2017-09-30 13F MEDIFAST COM 58470H101 137,160 -3,985 -2.82 8,145 39.16 0.0021
2017-08-11 2017-06-30 13F MEDIFAST COM 58470H101 141,145 2,597 1.87 5,853 -4.80 0.0016
2017-05-12 2017-03-31 13F MEDIFAST COM 58470H101 138,548 383 0.28 6,148 6.88 0.0018
2017-02-13 2016-12-31 13F MEDIFAST COM 58470H101 138,165 1,521 1.11 5,752 11.39 0.0018
2016-11-09 2016-09-30 13F MEDIFAST COM 58470H101 136,644 4,508 3.41 5,164 17.44 0.0016
2016-08-12 2016-06-30 13F MEDIFAST COM 58470H101 132,136 -2,155 -1.60 4,397 9.22 0.0014
2016-08-19 2016-03-31 13F/A-1 MEDIFAST COM 58470H101 134,291 751 0.56 4,026 -0.76 0.0013
2016-05-13 2016-03-31 13F Medifast COMM 58470H101 134,290 4,053
2016-02-12 2015-12-31 13F Medifast COMM 58470H101 133,540 3,400 2.61 4,057 16.05 0.0013
2015-11-12 2015-09-30 13F Medifast COMM 58470H101 130,140 130,140 0.00 3,496 0.0012
2015-08-13 2015-06-30 13F Medifast COMM 58470H101 0 -147,763 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Medifast COMM 58470H101 147,763 135 0.09 4,428 -10.62 0.0013
2015-02-12 2014-12-31 13F Medifast COM 58470H101 147,628 -10,288 -6.51 4,954 -4.44 0.0015
2014-11-13 2014-09-30 13F Medifast COMM 58470H101 157,916 -6,160 -3.75 5,184 3.89 0.0016
2014-08-14 2014-06-30 13F MEDIFAST com 58470H101 164,076 -25,524 -13.46 4,990 -9.52 0.0016
2014-05-14 2014-03-31 13F MEDIFAST COMM 58470H101 189,600 -9,320 -4.69 5,515 6.10 0.0017
2014-02-21 2013-12-31 13F/A-1 MEDIFAST COM 58470H101 198,920 3,833 1.96 5,198 -0.90 0.0017
2014-02-12 2013-12-31 13F MEDIFAST COM 58470H101 198,920 5,198
2013-11-13 2013-09-30 13F MEDIFAST COM 58470H101 195,087 12,308 6.73 5,245 11.38 0.0018
2013-08-09 2013-06-30 13F MEDIFAST COM 58470H101 182,779 182,779 4,709 0.0017
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.