SI-BONE Inc
SIBN
168 hedge funds and large institutions have $774M invested in SI-BONE Inc in 2026 Q2 according to their latest regulatory filings, with 22 funds opening new positions, 82 increasing their positions, 46 reducing their positions, and 30 closing their positions.
100% more funds holding in top 10
Funds holding in top 10: 1 → 2 (+1)
78% more repeat investments, than reductions
Existing positions increased: 82 | Existing positions reduced: 46
41% more capital invested
Capital invested by funds: $548M → $774M (+$226M)
19% more call options, than puts
Call options by funds: $3.69M | Put options by funds: $3.1M
8.69% more ownership
Funds ownership: 98.24% → 106.93% (+8.7%)
7% less funds holding
Funds holding: 180 → 168 (-12)
27% less first-time investments, than exits
New positions opened: 22 | Existing positions closed: 30
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
+$39.6M |
| 2 |
CCM
Cadian Capital Management
New York
|
+$20.9M |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$7.46M |
| 4 |
HWM
HighMark Wealth Management
St. Paul,
Minnesota
|
+$3.79M |
| 5 |
BlackRock
New York
|
+$3.54M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
-$8.31M |
| 2 |
Renaissance Technologies
New York
|
-$6.12M |
| 3 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
-$4.69M |
| 4 |
Nuveen
Charlotte,
North Carolina
|
-$3.71M |
| 5 |
PC
Pier Capital
Stamford,
Connecticut
|
-$3.04M |
SIBN Hedge Fund Activity: Q2 2026 in Review
168 of the 8,318 institutional investors tracked by Wall St. Rank reported a position in SI-BONE Inc (SIBN) for Q2 2026, worth a combined $774M — up 41% from $548M a quarter earlier.
Sellers outnumbered buyers: 30 funds closed out of SIBN and 22 opened new positions — a net loss of 8 holders — while 46 trimmed existing stakes and 82 added.
The largest buyer was First Light Asset Management, adding an estimated $39.6M. The largest seller was Morgan Stanley, cutting an estimated $8.31M.
- 168 institutional investors held SI-BONE Inc (SIBN) as of Q2 2026, down from 180 in Q1 2026.
- Funds reported $774M of SI-BONE Inc stock for Q2 2026, up 41% quarter-over-quarter.
- 22 funds opened new SI-BONE Inc positions in Q2 2026 and 30 closed out, a net change of -8 holders.
- The largest SI-BONE Inc buyer in Q2 2026 was First Light Asset Management, an estimated $39.6M added.
- The largest SI-BONE Inc seller in Q2 2026 was Morgan Stanley, an estimated $8.31M sold.
Based on aggregated 13F filings for Q2 2026.