MARTEN TRANS LTD MRTN
COM · Common Stock · CUSIP 573075108
American trucking company
- SectorIndustrials
- IndustryTrucking (No Local)
- HeadquartersMondovi, WI
- Websitemarten.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.1m this quarter). Holder counts are more reliable. Shares outstanding: 81.5m as of 2025-07-24, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $12.99. Options: 7 managers hold calls ($5.4m notional), 8 hold puts ($7.5m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 204 |
| Q4 2022 | 210 |
| Q1 2023 | 205 |
| Q2 2023 | 196 |
| Q3 2023 | 194 |
| Q4 2023 | 190 |
| Q1 2024 | 202 |
| Q2 2024 | 191 |
| Q3 2024 | 200 |
| Q4 2024 | 196 |
| Q1 2025 | 194 |
| Q2 2025 | 215 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 80 | 108 |
| Q4 2023 | 65 | 110 |
| Q1 2024 | 92 | 87 |
| Q2 2024 | 98 | 97 |
| Q3 2024 | 86 | 96 |
| Q4 2024 | 97 | 89 |
| Q1 2025 | 98 | 86 |
| Q2 2025 | 116 | 91 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $12.4k | $1.2m | 100.49 |
| Q4 2024 | $35.9k | $5.2m | 143.48 |
| Q1 2025 | $2.8m | $5.3m | 1.88 |
| Q2 2025 | $5.4m | $7.5m | 1.40 |
Biggest buyers
| NUANCE INVESTMENTS, LLC | Added | +508.5k |
| CITADEL ADVISORS LLC | Added | +275.9k |
| RENAISSANCE TECHNOLOGIES LLC | New | +267.4k |
| WOLVERINE TRADING, LLC | Added | +222.3k |
| TEACHER RETIREMENT SYSTEM OF TEXAS | Added | +219.1k |
| GENEVA CAPITAL MANAGEMENT LLC | Added | +199.7k |
| ExodusPoint Capital Management, LP | New | +171.6k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Added | +157.4k |
| AMERICAN CENTURY COMPANIES INC | Added | +126.3k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +107.9k |
Biggest sellers
| VICTORY CAPITAL MANAGEMENT INC | Reduced | -950.7k |
| AMERIPRISE FINANCIAL INC | Reduced | -853.0k |
| GHP Investment Advisors, Inc. | Reduced | -275.9k |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | -232.3k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -222.4k |
| BlackRock, Inc. | Reduced | -211.6k |
| Empirical Capital Management, LLC | Sold out | -200.0k |
| D. E. Shaw & Co., Inc. | Reduced | -195.6k |
| FIRST TRUST ADVISORS LP | Reduced | -117.5k |
| Van Hulzen Asset Management, LLC | Sold out | -116.8k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $2.5m194.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.2m90.1k shares |
| JANE STREET GROUP, LLC | New | $970.4k74.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $315.0k24.3k shares |
| WOLVERINE TRADING, LLC | New | $309.7k23.9k shares |
| GROUP ONE TRADING LLC | Reduced | $79.2k6.1k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| WOLVERINE TRADING, LLC | Added | $3.3m253.9k shares |
| PEAK6 LLC | New | $2.2m169.6k shares |
| CITADEL ADVISORS LLC | Added | $1.0m78.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $296.2k22.8k shares |
| SIMPLEX TRADING, LLC | Added | $264.0k20.4k shares |
| GROUP ONE TRADING LLC | Reduced | $237.7k18.3k shares |
| JANE STREET GROUP, LLC | Reduced | $193.6k14.9k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| DIMENSIONAL FUND ADVISORS LP 13G · institution filed 2026-01-21 | 6.0% |
Fell to 5% or below in the last year: NUANCE INVESTMENTS, LLC (4.9%, 2026-07-06), VANGUARD GROUP INC (4.9%, 2026-01-30)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 1 | $82.0k | — |
| Q3 2024 | 0 | — | 1 | $82.5k | — |
| Q4 2024 | 1 | $158.1k | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 1 | $257.6k | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-04-28 | BAUER JERRY M Director | Bought | $257.6k20.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 8.7m $113.1m | Reduced -211.6k |
| NUANCE INVESTMENTS, LLC 5.81% of their portfolio | 5.7m $74.6m | Added +508.5k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 5.3m $68.6m | Reduced -222.4k |
| VANGUARD GROUP INC 0.00% of their portfolio | 4.2m $54.7m | Reduced -1.7k |
| GENEVA CAPITAL MANAGEMENT LLC 0.73% of their portfolio | 3.4m $43.6m | Added +199.7k |
| VICTORY CAPITAL MANAGEMENT INC 0.03% of their portfolio | 3.2m $41.4m | Reduced -950.7k |
| STATE STREET CORP 0.00% of their portfolio | 2.4m $31.2m | Reduced -1.5k |
| AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio | 2.1m $27.1m | Added +126.3k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.5m $19.0m | Added +15.0k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.05% of their portfolio | 1.3m $17.2m | Reduced -110.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 1.1m $14.0m | Reduced -21.2k |
| MORGAN STANLEY 0.00% of their portfolio | 1.0m $13.4m | Added +3.5k |
| LONDON CO OF VIRGINIA 0.07% of their portfolio | 973.0k $12.6m | Added +96.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 799.1k $10.4m | Reduced -56.9k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 670.8k $8.7m | Added +39.5k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 651.4k $8.5m | Reduced -17.5k |
| Nuveen, LLC 0.00% of their portfolio | 614.7k $8.0m | Added +21.9k |
| FMR LLC 0.00% of their portfolio | 483.6k $6.3m | Reduced -11.4k |
| DEPRINCE RACE & ZOLLO INC 0.13% of their portfolio | 465.8k $6.1m | Reduced -28.8k |
| Clearbridge Investments, LLC 0.00% of their portfolio | 454.9k $5.9m | Reduced -92.6k |
| Invesco Ltd. 0.00% of their portfolio | 410.8k $5.3m | Reduced -6.5k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 410.0k $5.3m | Added +275.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 403.5k $5.2m | Reduced -853.0k |
| HEARTLAND ADVISORS INC 0.29% of their portfolio | 400.0k $5.2m | Added +100.0k |
| NICHOLAS COMPANY, INC. 0.09% of their portfolio | 398.9k $5.2m | Unchanged |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 377.4k $4.9m | Reduced -6.8k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 356.4k $4.6m | Added +107.9k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.02% of their portfolio | 350.5k $4.6m | Added +219.1k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 305.0k $4.0m | Added +23.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 289.7k $3.8m | Added +8.2k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 286.9k $3.7m | Reduced -1.3k |
| US BANCORP \DE\ 0.00% of their portfolio | 268.1k $3.5m | Reduced -814 |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 267.4k $3.5m | New |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 257.1k $3.3m | Reduced -64.2k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 242.2k $3.1m | Reduced -29.8k |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 242.1k $3.1m | Added +33.8k |
| WOLVERINE TRADING, LLC 0.08% of their portfolio | 234.5k $3.0m | Added +222.3k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 213.0k $2.8m | Added +5.3k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 201.9k $2.6m | Reduced -195.6k |
| Public Sector Pension Investment Board 0.01% of their portfolio | 196.9k $2.6m | Added +13.5k |
| Mariner, LLC 0.00% of their portfolio | 196.0k $2.5m | Added +43.5k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.01% of their portfolio | 177.8k $2.3m | Added +157.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 177.4k $2.3m | Reduced -232.3k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 172.0k $2.2m | Added +58.7k |
| ExodusPoint Capital Management, LP 0.03% of their portfolio | 171.6k $2.2m | New |
| Hodges Capital Management Inc. 0.21% of their portfolio | 166.1k $2.2m | Added +600 |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio | 164.3k $2.1m | Reduced -70.1k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 163.2k $2.1m | Added +48.6k |
| Legal & General Group Plc 0.00% of their portfolio | 159.3k $2.1m | Added +4.5k |
| UBS Group AG 0.00% of their portfolio | 158.3k $2.1m | Reduced -6.1k |
| BARCLAYS PLC 0.00% of their portfolio | 157.2k $2.0m | Added +36.2k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 153.4k $2.0m | Reduced -117.5k |
| CONFLUENCE INVESTMENT MANAGEMENT LLC 0.03% of their portfolio | 142.6k $1.9m | Reduced -9.3k |
| Forest Hill Capital, LLC 1.29% of their portfolio | 140.0k $1.8m | Unchanged |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 126.8k $1.6m | Added +6.7k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 119.9k $1.6m | Added +102.8k |
| Swiss National Bank 0.00% of their portfolio | 116.7k $1.5m | Reduced -1.7k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 114.1k $1.5m | Reduced -13.6k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 109.2k $1.4m | Added +59.5k |
| Creative Planning 0.00% of their portfolio | 108.8k $1.4m | Added +46.6k |
| AlphaQuest LLC 0.13% of their portfolio | 103.1k $1.3m | Added +86.1k |
| Cubist Systematic Strategies, LLC 0.01% of their portfolio | 100.5k $1.3m | New |
| Hudson Bay Capital Management LP 0.01% of their portfolio | 100.1k $1.3m | Added +41.1k |
| Penn Capital Management Company, LLC 0.11% of their portfolio | 99.3k $1.3m | Reduced -43.4k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 89.2k $1.2m | Added +27.8k |
| WINTON GROUP Ltd 0.05% of their portfolio | 82.8k $1.1m | Added +6.2k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 77.1k $1.0m | Added +2.2k |
| GSA CAPITAL PARTNERS LLP 0.07% of their portfolio | 75.6k $982.0k | Added +56.7k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 75.4k $979.7k | Unchanged |
| Dynamic Technology Lab Private Ltd 0.13% of their portfolio | 72.8k $945.0k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 71.9k $933.9k | Reduced -101.0k |
| TECTONIC ADVISORS LLC 0.05% of their portfolio | 69.2k $899.0k | Added +5.1k |
| Nebula Research & Development LLC 0.07% of their portfolio | 65.6k $852.5k | Reduced -6.2k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 61.5k $798.7k | Added +3.2k |
| Verition Fund Management LLC 0.00% of their portfolio | 61.4k $798.0k | Added +39.3k |
| CITIGROUP INC 0.00% of their portfolio | 60.4k $784.4k | Reduced -32.7k |
| WEALTHEDGE INVESTMENT ADVISORS, LLC 0.31% of their portfolio | 58.0k $752.8k | Added +6.2k |
| Canvas Wealth Advisors, LLC 0.15% of their portfolio | 57.9k $745.0k | Reduced -4.6k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 54.8k $711.7k | Reduced -2.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 52.6k $683.5k | Reduced -4.3k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 50.2k $652.7k | Reduced -24.2k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 49.6k $644.0k | Reduced -4.3k |
| Allianz Asset Management GmbH 0.00% of their portfolio | 47.2k $613.2k | New |
| SEI INVESTMENTS CO 0.00% of their portfolio | 47.0k $611.0k | Added +8.1k |
| Campbell & CO Investment Adviser LLC 0.04% of their portfolio | 44.2k $573.8k | New |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 42.5k $553.0k | Added +61 |
| PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio | 42.1k $547.3k | Unchanged |
| Engineers Gate Manager LP 0.01% of their portfolio | 41.4k $537.3k | Reduced -57.4k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 39.5k $514.0k | Added +3.1k |
| HRT FINANCIAL LP 0.00% of their portfolio | 39.3k $510.0k | New |
| CAXTON ASSOCIATES LLP 0.01% of their portfolio | 39.1k $508.0k | Added +27.6k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 38.9k $505.2k | Added +1.9k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 37.9k $492.5k | New |
| LPL Financial LLC 0.00% of their portfolio | 36.4k $472.4k | Added +3.3k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 34.7k $451.3k | Added +1.3k |
| State of Alaska, Department of Revenue 0.00% of their portfolio | 34.4k $446.0k | Added +2.4k |
| Trexquant Investment LP 0.00% of their portfolio | 34.0k $441.3k | New |
| Point72 Asset Management, L.P. 0.00% of their portfolio | 33.9k $439.8k | New |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio | 32.0k $415.6k | Added +100 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 32.0k $415.3k | Reduced -2.5k |