Star Bulk Carriers
SBLK
174 hedge funds and large institutions have $626M invested in Star Bulk Carriers in 2025 Q4 according to their latest regulatory filings, with 40 funds opening new positions, 45 increasing their positions, 51 reducing their positions, and 28 closing their positions.
100% more funds holding in top 10
Funds holding in top 10: 2 → 4 (+2)
43% more first-time investments, than exits
New positions opened: 40 | Existing positions closed: 28
15% more capital invested
Capital invested by funds: $542M → $626M (+$84M)
5% more funds holding
Funds holding: 165 → 174 (+9)
2.95% more ownership
Funds ownership: 24.98% → 27.93% (+3%)
12% less repeat investments, than reductions
Existing positions increased: 45 | Existing positions reduced: 51
26% less call options, than puts
Call options by funds: $26.7M | Put options by funds: $36.2M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$15.1M |
| 2 |
Point72 Asset Management
Stamford,
Connecticut
|
+$15.1M |
| 3 |
Boston Partners
Boston,
Massachusetts
|
+$12.7M |
| 4 |
Two Sigma Investments
New York
|
+$10.5M |
| 5 |
BA
Bridgewater Associates
Westport,
Connecticut
|
+$9.82M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$40.8M |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$16.7M |
| 3 |
Geode Capital Management
Boston,
Massachusetts
|
-$9.21M |
| 4 |
Balyasny Asset Management
Chicago,
Illinois
|
-$8.58M |
| 5 |
MFS
Mirabella Financial Services
London,
United Kingdom
|
-$2.82M |
SBLK Hedge Fund Activity: Q4 2025 in Review
174 of the 8,263 institutional investors tracked by Wall St. Rank reported a position in Star Bulk Carriers (SBLK) for Q4 2025, worth a combined $626M — up 15% from $542M a quarter earlier.
Buyers outnumbered sellers: 40 funds opened new SBLK positions and 28 closed out — a net gain of 12 holders — while 45 added to existing stakes and 51 trimmed.
The largest buyer was Millennium Management, adding an estimated $15.1M. The largest seller was BlackRock, cutting an estimated $40.8M.
- 174 institutional investors held Star Bulk Carriers (SBLK) as of Q4 2025, up from 165 in Q3 2025.
- Funds reported $626M of Star Bulk Carriers stock for Q4 2025, up 15% quarter-over-quarter.
- 40 funds opened new Star Bulk Carriers positions in Q4 2025 and 28 closed out, a net change of +12 holders.
- The largest Star Bulk Carriers buyer in Q4 2025 was Millennium Management, an estimated $15.1M added.
- The largest Star Bulk Carriers seller in Q4 2025 was BlackRock, an estimated $40.8M sold.
Based on aggregated 13F filings for Q4 2025.