SI-BONE Inc
SIBN
175 hedge funds and large institutions have $616M invested in SI-BONE Inc in 2025 Q3 according to their latest regulatory filings, with 19 funds opening new positions, 64 increasing their positions, 66 reducing their positions, and 22 closing their positions.
99,400% more call options, than puts
Call options by funds: $995K | Put options by funds: $1K
1.14% more ownership
Funds ownership: 95.88% → 97.02% (+1.1%)
3% less repeat investments, than reductions
Existing positions increased: 64 | Existing positions reduced: 66
2% less funds holding
Funds holding: 178 → 175 (-3)
14% less first-time investments, than exits
New positions opened: 19 | Existing positions closed: 22
20% less capital invested
Capital invested by funds: $769M → $616M (-$153M)
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CCM
Cadian Capital Management
New York
|
+$9.71M |
| 2 |
PD
Point72 (DIFC)
Dubai,
United Arab Emirates
|
+$9.5M |
| 3 |
American Century Companies
Kansas City,
Missouri
|
+$8.52M |
| 4 |
Wellington Management Group
Boston,
Massachusetts
|
+$5.96M |
| 5 |
Impax Asset Management Group
London,
United Kingdom
|
+$5.44M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Holocene Advisors
New York
|
-$11M |
| 2 |
HCA
Harbor Capital Advisors
Chicago,
Illinois
|
-$6.92M |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$3.98M |
| 4 |
BG
Bellevue Group
Kuesnacht,
Switzerland
|
-$3.94M |
| 5 |
NCGI
Next Century Growth Investors
Plymouth,
Minnesota
|
-$3.8M |
SIBN Hedge Fund Activity: Q3 2025 in Review
175 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in SI-BONE Inc (SIBN) for Q3 2025, worth a combined $616M — down 20% from $769M a quarter earlier.
Sellers outnumbered buyers: 22 funds closed out of SIBN and 19 opened new positions — a net loss of 3 holders — while 66 trimmed existing stakes and 64 added.
The largest buyer was Cadian Capital Management, opening a new position worth an estimated $9.71M. The largest seller was Holocene Advisors, exiting entirely with an estimated $11M sold.
- 175 institutional investors held SI-BONE Inc (SIBN) as of Q3 2025, down from 178 in Q2 2025.
- Funds reported $616M of SI-BONE Inc stock for Q3 2025, down 20% quarter-over-quarter.
- 19 funds opened new SI-BONE Inc positions in Q3 2025 and 22 closed out, a net change of -3 holders.
- The largest SI-BONE Inc buyer in Q3 2025 was Cadian Capital Management, an estimated $9.71M added.
- The largest SI-BONE Inc seller in Q3 2025 was Holocene Advisors, an estimated $11M sold.
Based on aggregated 13F filings for Q3 2025.