Marten Transport, Ltd.
US ˙ NasdaqGS ˙ US5730751089

SecurityMRTN / Marten Transport, Ltd.
InstitutionFox Run Management, L.l.c.
Latest Disclosed Ownership17,163 shares
Latest Disclosed Value $ 220,716
Fox Run Management, L.l.c. reports 46.44% decrease in ownership of MRTN / Marten Transport, Ltd.

On May 12, 2026 - Fox Run Management, L.l.c. filed a 13F-HR form disclosing ownership of 17,163 shares of Marten Transport, Ltd. (US:MRTN) valued at $225,350 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 32,047 shares of Marten Transport, Ltd.. This represents a change in shares of -46.44% during the quarter. The current value of the position is $300,696 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)
2026-05-12 2026-03-31 13F MARTEN TRANS COM 573075108 17,163 -14,884 -46.44 221 -39.56 0.0386
2026-02-11 2025-12-31 13F MARTEN TRANS COM 573075108 32,047 17,496 120.24 365 134.84 0.0563
2025-11-12 2025-09-30 13F MARTEN TRANS COM 573075108 14,551 -6,563 -31.08 155 -43.43 0.0242
2025-08-06 2025-06-30 13F MARTEN TRANS COM 573075108 21,114 1,362 6.90 274 1.48 0.0457
2025-05-13 2025-03-31 13F MARTEN TRANS COM 573075108 19,752 -7,774 -28.24 271 -37.06 0.0420
2025-02-11 2024-12-31 13F MARTEN TRANS COM 573075108 27,526 27,526 430 0.0780
2023-08-11 2023-06-30 13F MARTEN TRANS COM 573075108 0 -11,188 -100.00 0 -100.00
2023-05-12 2023-03-31 13F MARTEN TRANS COM 573075108 11,188 11,188 234 0.0763
2023-02-07 2022-12-31 13F MARTEN TRANS COM 573075108 0 -10,559 -100.00 0 -100.00
2022-11-07 2022-09-30 13F MARTEN TRANS COM 573075108 10,559 10,559 202 0.0786
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.