Marten Transport
MRTN
204 hedge funds and large institutions have $648M invested in Marten Transport in 2025 Q4 according to their latest regulatory filings, with 33 funds opening new positions, 78 increasing their positions, 76 reducing their positions, and 41 closing their positions.
2,050% more call options, than puts
Call options by funds: $129K | Put options by funds: $6K
9% more capital invested
Capital invested by funds: $594M → $648M (+$53.4M)
1.43% more ownership
Funds ownership: 68.4% → 69.82% (+1.4%)
3% more repeat investments, than reductions
Existing positions increased: 78 | Existing positions reduced: 76
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
6% less funds holding
Funds holding: 216 → 204 (-12)
20% less first-time investments, than exits
New positions opened: 33 | Existing positions closed: 41
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Boston Partners
Boston,
Massachusetts
|
+$9.76M |
| 2 |
BlackRock
New York
|
+$7.88M |
| 3 |
Russell Investments Group
London,
United Kingdom
|
+$5.52M |
| 4 |
Two Sigma Advisers
New York
|
+$3.63M |
| 5 |
Verition Fund Management
Greenwich,
Connecticut
|
+$3.22M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GCM
Geneva Capital Management
Milwaukee,
Wisconsin
|
-$15M |
| 2 |
Renaissance Technologies
New York
|
-$5.51M |
| 3 |
ClearBridge Investments
New York
|
-$4.94M |
| 4 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
-$3.63M |
| 5 |
JP Morgan Chase
New York
|
-$3.08M |
MRTN Hedge Fund Activity: Q4 2025 in Review
204 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Marten Transport (MRTN) for Q4 2025, worth a combined $648M — up 9% from $594M a quarter earlier.
Sellers outnumbered buyers: 41 funds closed out of MRTN and 33 opened new positions — a net loss of 8 holders — while 76 trimmed existing stakes and 78 added.
The largest buyer was Boston Partners, opening a new position worth an estimated $9.76M. The largest seller was Geneva Capital Management, cutting an estimated $15M.
- 204 institutional investors held Marten Transport (MRTN) as of Q4 2025, down from 216 in Q3 2025.
- Funds reported $648M of Marten Transport stock for Q4 2025, up 9% quarter-over-quarter.
- 33 funds opened new Marten Transport positions in Q4 2025 and 41 closed out, a net change of -8 holders.
- The largest Marten Transport buyer in Q4 2025 was Boston Partners, an estimated $9.76M added.
- The largest Marten Transport seller in Q4 2025 was Geneva Capital Management, an estimated $15M sold.
Based on aggregated 13F filings for Q4 2025.