Marten Transport, Ltd.
US ˙ NasdaqGS ˙ US5730751089

SecurityMRTN / Marten Transport, Ltd.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership27,710 shares
Latest Disclosed Value $ 363,835
Mercer Global Advisors Inc /adv reports 12.41% increase in ownership of MRTN / Marten Transport, Ltd.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 27,710 shares of Marten Transport, Ltd. (US:MRTN) valued at $363,832 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 24,650 shares of Marten Transport, Ltd.. This represents a change in shares of 12.41% during the quarter. The current value of the position is $491,852 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.

Upgrade to unlock premium data and export to Excel .

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 MARTEN TRANS COM 573075108 27,710 3,060 12.41 364 29.64 0.0005
2026-02-17 2025-12-31 13F MARTEN TRANS COM 573075108 24,650 11,311 84.80 281 97.18 0.0004
2025-11-14 2025-09-30 13F MARTEN TRANS COM 573075108 13,339 13,339 142 0.0002
2024-05-15 2024-03-31 13F MARTEN TRANS COM 573075108 0 -11,183 -100.00 0 0.0000
2024-02-15 2023-12-31 13F MARTEN TRANS COM 573075108 11,183 1,025 10.09 0 0.0007
2023-11-15 2023-09-30 13F/A-1 MARTEN TRANS COM 573075108 10,158 -505 -4.74 0 0.0008
2023-11-14 2023-09-30 13F MARTEN TRANS COM 573075108 10,158 -505 0 0.0008
2023-08-14 2023-06-30 13F MARTEN TRANS COM 573075108 10,663 -13 -0.12 0 0.0009
2023-05-16 2023-03-31 13F MARTEN TRANS COM 573075108 10,676 172 1.64 0 0.0010
2023-02-09 2022-12-31 13F MARTEN TRANS COM 573075108 10,504 101 0.97 0 -100.00 0.0010
2022-11-15 2022-09-30 13F MARTEN TRANS COM 573075108 10,403 -2 -0.02 199 13.71 0.0012
2022-08-10 2022-06-30 13F MARTEN TRANS COM 573075108 10,405 -384 -3.56 175 -8.85 0.0011
2022-05-10 2022-03-31 13F MARTEN TRANS COM 573075108 10,789 -4,239 -28.21 192 -25.58 0.0011
2022-02-04 2021-12-31 13F MARTEN TRANS COM 573075108 15,028 3,490 30.25 258 42.54 0.0016
2021-11-10 2021-09-30 13F MARTEN TRANS COM 573075108 11,538 -294 -2.48 181 -7.18 0.0013
2021-08-10 2021-06-30 13F MARTEN TRANS COM 573075108 11,832 -130 -1.09 195 -3.94 0.0015
2021-08-10 2021-03-31 13F/A-1 MARTEN TRANS COM 573075108 11,962 555 4.87 203 3.05 0.0018
2021-05-11 2021-03-31 13F MARTEN TRANS COM 573075108 11,962 555 203 0.0019
2021-02-12 2020-12-31 13F MARTEN TRANS COM 573075108 11,407 136 1.21 197 7.07 0.0025
2020-12-10 2020-09-30 13F MARTEN TRANS LTD COM COM 573075108 11,271 11,271 184 0.0028
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.