AI summary pending
View Full Filing (SEC EDGAR)Si-bone Inc
$19.68-1.2%
+$109.6M
Net Activity
+11.53% total shares
Institutions Holding
171
Popularity Rank
#3391
Avg Weight
0.15%
Total Value
$830.0M
Market Cap
$845.4M
171 institutions currently hold SIBN, with 111 net buyers and 78 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
78
Net Buying Institutions
111
Top 5 by Value
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Across its top 20 institutional holders, SIBN's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 7/100, avg. turnover score 41/100).
SIBN ranks #3391 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
SIBN is a top-conviction position for First Light Asset Management, LLC — at 8.1% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
Perpetual Ltd has added to its SIBN position for two straight quarters, increasing it by $235.3K to reach $637.1K today.
SIBN is down 1.2% today, but institutions show net buying of $109.6M this quarter — a divergence between today's price move and the underlying institutional flow.
SIBN reported a net loss of $14.6M over the trailing twelve months.
+$183.6M
Total Buy Value
$64.2M
Total Sell Value
111
Net Buyers
78
Net Sellers
SIBN
Q2 2026
Top 5 Institutional Movers
SIBN does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
9
Filings (90d)
$4.38M
Total Est. Value
230K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003 | 2026-10-13 | $736K |
| ANSHUL MAHESHWARI | 2026-10-05 | $31K |
| DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003 | 2026-08-24 | $518K |
| ANSHUL MAHESHWARI | 2026-08-24 | $232K |
| DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003 | 2026-08-21 | $76K |
| ANSHUL MAHESHWARI | 2026-08-21 | $219K |
| DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003 | 2026-08-20 | $1.03M |
| ANSHUL MAHESHWARI | 2026-08-19 | $110K |
| THE JEFFREY W DUNN LIVING TRUST DTD 05/17/2012 | 2026-08-03 | $1.42M |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| BlackRock, Inc. | 13G/A | 2026-07-30 | 8.0% |
2
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)825704109
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
5,174
Total reported value
$671.0B
Held by 5174 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,106
Total reported value
$1.1T
Held by 5106 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,949
Total reported value
$485.2B
Held by 4949 institutions — one of the most-tracked stocks on AlphaSMO
Access SIBN's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/SIBNCLI
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