Star Bulk Carriers
SBLK
164 hedge funds and large institutions have $542M invested in Star Bulk Carriers in 2025 Q3 according to their latest regulatory filings, with 23 funds opening new positions, 44 increasing their positions, 53 reducing their positions, and 30 closing their positions.
34% more call options, than puts
Call options by funds: $25.8M | Put options by funds: $19.2M
2% less capital invested
Capital invested by funds: $551M → $542M (-$9.39M)
2.38% less ownership
Funds ownership: 27.34% → 24.96% (-2.4%)
5% less funds holding
Funds holding: 172 → 164 (-8)
17% less repeat investments, than reductions
Existing positions increased: 44 | Existing positions reduced: 53
23% less first-time investments, than exits
New positions opened: 23 | Existing positions closed: 30
33% less funds holding in top 10
Funds holding in top 10: 3 → 2 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AllianceBernstein
Nashville,
Tennessee
|
+$31.7M |
| 2 |
BlackRock
New York
|
+$15.1M |
| 3 |
Morgan Stanley
New York
|
+$12.1M |
| 4 |
Ameriprise
Minneapolis,
Minnesota
|
+$10.2M |
| 5 |
Geode Capital Management
Boston,
Massachusetts
|
+$9.83M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Victory Capital Management
San Antonio,
Texas
|
-$33.2M |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$24.6M |
| 3 |
OCM
Oaktree Capital Management
Los Angeles,
California
|
-$23.9M |
| 4 |
UBS AM
Chicago,
Illinois
|
-$20.5M |
| 5 |
Arrowstreet Capital
Boston,
Massachusetts
|
-$11.8M |
SBLK Hedge Fund Activity: Q3 2025 in Review
164 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Star Bulk Carriers (SBLK) for Q3 2025, worth a combined $542M — down 1.7% from $551M a quarter earlier.
Sellers outnumbered buyers: 30 funds closed out of SBLK and 23 opened new positions — a net loss of 7 holders — while 53 trimmed existing stakes and 44 added.
The largest buyer was AllianceBernstein, adding an estimated $31.7M. The largest seller was Victory Capital Management, exiting entirely with an estimated $33.2M sold.
- 164 institutional investors held Star Bulk Carriers (SBLK) as of Q3 2025, down from 172 in Q2 2025.
- Funds reported $542M of Star Bulk Carriers stock for Q3 2025, down 1.7% quarter-over-quarter.
- 23 funds opened new Star Bulk Carriers positions in Q3 2025 and 30 closed out, a net change of -7 holders.
- The largest Star Bulk Carriers buyer in Q3 2025 was AllianceBernstein, an estimated $31.7M added.
- The largest Star Bulk Carriers seller in Q3 2025 was Victory Capital Management, an estimated $33.2M sold.
Based on aggregated 13F filings for Q3 2025.