Marten Transport, Ltd. (MRTN) Ownership
MRTN ownership summary
as of October 18, 2026- Institutions
- 76.8% of shares outstanding
- Insiders
- 29.29% of shares outstanding
- Shares outstanding
- 81.7M
- Float
- 57.6M shares available to trade
- Short interest
- 8.68% 3.2M shares short
- Days to cover
- 4.15 short interest down 11.6% vs prior month
- Institutions 76.77%
- Insiders 29.29%
MRTN top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 12.32% | 10.1M | $129.2M | +298,912 (+3.1%) | June 30, 2026 |
| 2 | Dimensional Fund Advisors, Inc. | 6.12% | 5.0M | $64.2M | +105,658 (+2.2%) | June 30, 2026 |
| 3 | American Century Companies Inc | 3.43% | 2.8M | $36.0M | +180,895 (+6.9%) | June 30, 2026 |
| 4 | State Street Corp | 3.34% | 2.7M | $35.0M | +126,055 (+4.9%) | June 30, 2026 |
| 5 | FMR Inc | 3.31% | 2.7M | $34.7M | +933,232 (+52.8%) | June 30, 2026 |
| 6 | Vanguard Capital Management, LLC | 3.09% | 2.5M | $32.4M | +28,174 (+1.1%) | June 30, 2026 |
| 7 | The Goldman Sachs Group Inc | 2.57% | 2.1M | $27.0M | +1.5M (+238.9%) | June 30, 2026 |
| 8 | Nuveen, LLC | 2.38% | 1.9M | $25.0M | +1.3M (+198.6%) | June 30, 2026 |
| 9 | Two Sigma Investments LLC | 2.24% | 1.8M | $23.5M | +401,084 (+28.1%) | June 30, 2026 |
| 10 | Geode Capital Management, LLC | 1.90% | 1.6M | $20.0M | +86,004 (+5.9%) | June 30, 2026 |
| 11 | Cramer Rosenthal McGlynn LLC | 1.87% | 1.5M | $19.6M | +1.5M (0.0%) | June 30, 2026 |
| 12 | Royce & Associates, LP | 1.71% | 1.4M | $17.9M | +414,680 (+42.3%) | June 30, 2026 |
| 13 | Morgan Stanley - Brokerage Accounts | 1.66% | 1.4M | $17.4M | +58,926 (+4.6%) | June 30, 2026 |
| 14 | Vanguard Portfolio Management, LLC | 1.49% | 1.2M | $15.7M | +105,153 (+9.4%) | June 30, 2026 |
| 15 | Charles Schwab Investment Management Inc | 1.47% | 1.2M | $15.4M | −76,337 (−6.0%) | June 30, 2026 |
| 16 | Ameriprise Financial Inc | 1.32% | 1.1M | $13.9M | +111,626 (+11.5%) | June 30, 2026 |
| 17 | Boston Partners Global Investors, Inc | 1.28% | 1.0M | $13.5M | −650,668 (−38.3%) | June 30, 2026 |
| 18 | Arrowstreet Capital Limited Partnership | 1.13% | 920K | $11.8M | +243,156 (+35.9%) | June 30, 2026 |
| 19 | Bessemer Group Inc | 1.07% | 874K | $11.2M | +873,347 (+507,759.9%) | June 30, 2026 |
| 20 | London Company of Virginia | 1.05% | 854K | $11.0M | −35,304 (−4.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 17 holders added 8.3M shares and 3 cut 762K.
MRTN top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 4.22% | 3.5M | $44.3M | +891 (+0.0%) | September 30, 2026 |
| 2 | Avantis US Small Cap Value ETF | 2.60% | 2.1M | $27.3M | — | September 30, 2026 |
| 3 | Vanguard MStar Total Stk Mkt Idx Invest | 2.21% | 1.8M | $23.1M | — | August 31, 2026 |
| 4 | iShares Russell 2000 ETF | 1.94% | 1.6M | $20.4M | +24,474 (+1.6%) | September 30, 2026 |
| 5 | Fidelity Small Cap Value Fund | 1.48% | 1.2M | $15.5M | −543,655 (−31.0%) | July 31, 2026 |
| 6 | DFA US Small Cap Value I | 1.47% | 1.2M | $15.4M | — | August 31, 2026 |
| 7 | Fidelity Enhanced Small Cap Core ETF | 1.16% | 948K | $12.2M | +1,986 (+0.2%) | September 30, 2026 |
| 8 | CREF Total Global Stock Account R3 | 1.11% | 903K | $11.6M | −52,507 (−5.5%) | August 31, 2026 |
| 9 | Columbia Small Cap Value Discv A | 0.83% | 678K | $8.7M | +4,300 (+0.6%) | August 31, 2026 |
| 10 | Fidelity Small Cap Index | 0.80% | 649K | $8.3M | +3,075 (+0.5%) | July 31, 2026 |
| 11 | CRM Long/Short Opportunities Instl | 0.73% | 600K | $7.7M | +599,574 (0.0%) | June 30, 2026 |
| 12 | iShares Russell 2000 Value ETF | 0.69% | 561K | $7.2M | +850 (+0.2%) | September 30, 2026 |
| 13 | Dimensional US Targeted Value ETF | 0.65% | 534K | $6.9M | +46 (+0.0%) | September 30, 2026 |
| 14 | Nuveen Quant Small Cap Equity R6 | 0.64% | 524K | $6.7M | — | August 31, 2026 |
| 15 | State Street SPDR Port S&P 600 Sm CpETF | 0.63% | 519K | $6.7M | — | September 30, 2026 |
| 16 | DFA US Targeted Value I | 0.63% | 514K | $6.6M | — | August 31, 2026 |
| 17 | Dimensional US Small Cap Value ETF | 0.61% | 502K | $6.4M | — | September 24, 2026 |
| 18 | iShares S&P Small-Cap 600 Value ETF | 0.60% | 490K | $6.3M | — | September 30, 2026 |
| 19 | DFA US Small Cap I | 0.59% | 485K | $6.2M | — | August 31, 2026 |
| 20 | FTGF RY US SmCp Opp A USD Dis(A) | 0.55% | 450K | $5.8M | +5,373 (+1.2%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
MRTN insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-04-28 | Jerry M Bauer | Buy | $12.88 | 20,000 | $257,600 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
MRTN shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns MRTN
Institutional investors own 76.8% of Marten Transport's shares and insiders 29.29%. The largest holder is BlackRock Inc with 12.32% of the shares (10.1M), as of June 30, 2026. Among the top 20 institutions, 17 added shares and 3 reduced their stake in the latest filings. Short interest is 8.68% of the float, or 4.15 days of average trading volume. The share count fell 3.2% since 2014.
Related: MRTN analyst forecast, MRTN key metrics, MRTN dividend history. See the MRTN stock overview for the latest quote and news.
MRTN ownership FAQ
Who owns the most Marten Transport stock?
The largest shareholders of Marten Transport are BlackRock Inc (12.32%), Dimensional Fund Advisors, Inc. (6.12%), American Century Companies Inc (3.43%), State Street Corp (3.34%), FMR Inc (3.31%).
What percentage of Marten Transport is owned by institutions?
Institutions hold 76.8% of Marten Transport's shares outstanding; insiders hold 29.29%.
Which funds own Marten Transport?
The largest fund holders of Marten Transport are iShares Core S&P Small-Cap ETF (4.22%), Avantis US Small Cap Value ETF (2.60%), Vanguard MStar Total Stk Mkt Idx Invest (2.21%), iShares Russell 2000 ETF (1.94%), Fidelity Small Cap Value Fund (1.48%).
What is Marten Transport's short interest?
3.2M shares of Marten Transport were sold short, 8.68% of the float; at the average daily volume it would take 4.15 days to cover.
Are insiders buying or selling Marten Transport?
Of the latest 1 reported insider transactions in Marten Transport (since April 28, 2025), 1 were purchases and 0 were sales.
How many shares of Marten Transport are outstanding?
Marten Transport has 81.7M shares outstanding, of which 57.6M are in the public float.