155 tracked 13F filers disclose a position in SIBN as of the latest SEC 13F filings, a combined $558.8M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | First Light Asset Management, LLC | $67.6M | 5.4M | ▲+6.4% Added · +320K sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $43.3M | 3.4M | ▼−1.7% Reduced · −59K sh | Q1 2026 | |
| 3 | AMERICAN CENTURY COMPANIES INC | $31.7M | 2.5M | ▲+9.1% Added · +209K sh | Q1 2026 | |
| 4 | BROWN ADVISORY INC | $26.8M | 2.1M | ▼−14% Reduced · −339K sh | Q1 2026 | |
| 5 | CADIAN CAPITAL MANAGEMENT, LP | $23.8M | 1.9M | ▲+61% Added · +716K sh | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $22.3M | 1.8M | →First observed position No prior filed position | Q1 2026 | |
| 7 | Granahan Investment Management, LLC | $22.0M | 1.7M | ▲+98% Added · +859K sh | Q1 2026 | |
| 8 | Impax Asset Management Group plc | $23.3M | 1.4M | —Held | Q2 2026 | |
| 9 | Nuveen, LLC | $16.2M | 1.3M | ▼−9.6% Reduced · −136K sh | Q1 2026 | |
| 10 | GILDER GAGNON HOWE & CO LLC | $20.4M | 1.3M | ▲+20% Added · +205K sh | Q2 2026 | |
| 11 | SILVERCREST ASSET MANAGEMENT GROUP LLC | $15.7M | 1.2M | ▼−10.0% Reduced · −138K sh | Q1 2026 | |
| 12 | PARADIGM CAPITAL MANAGEMENT INC/NY | $20.1M | 1.2M | ▲+9.5% Added · +107K sh | Q2 2026 | |
| 13 | STATE STREET CORP | $19.8M | 1.2M | ▲+7.5% Added · +84K sh | Q2 2026 | |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | $17.6M | 1.1M | ▲+13% Added · +125K sh | Q2 2026 | |
| 15 | Champlain Investment Partners, LLC | $14.6M | 896K | ▲+2.1% Added · +19K sh | Q2 2026 | |
| 16 | Point72 Asset Management, L.P. | $10.6M | 840K | ▲+13% Added · +94K sh | Q1 2026 | |
| 17 | First Eagle Investment Management, LLC | $12.5M | 769K | —Held | Q3 2026 | |
| 18 | MORGAN STANLEY | $9.0M | 713K | ▲+248% Added · +508K sh | Q1 2026 | |
| 19 | GOLDMAN SACHS GROUP INC | $7.9M | 622K | ▼−7.9% Reduced · −54K sh | Q1 2026 | |
| 20 | DIMENSIONAL FUND ADVISORS LP | $7.8M | 619K | ▲+42% Added · +182K sh | Q1 2026 | |
| 21 | RENAISSANCE TECHNOLOGIES LLC | $6.0M | 473K | ▲+102% Added · +238K sh | Q1 2026 | |
| 22 | PEREGRINE CAPITAL MANAGEMENT LLC | $5.4M | 428K | ▲+13% Added · +49K sh | Q1 2026 | |
| 23 | HighMark Wealth Management LLC | $6.9M | 425K | ▲+166% Added · +265K sh | Q2 2026 | |
| 24 | BANK OF AMERICA CORP /DE/ | $5.3M | 419K | ▲+8.7% Added · +34K sh | Q1 2026 | |
| 25 | VANGUARD PORTFOLIO MANAGEMENT LLC | $5.2M | 413K | →First observed position No prior filed position | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 4 funds opened a new position in SIBN and 24 added to an existing one, while 23 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 78 funds | $126.4B |
| MICROSOFT CORPMSFT | 76 funds | $177.7B |
| ALPHABET INC-CL AGOOGL | 76 funds | $97.5B |
| MICRON TECHNOLOGY INCMU | 76 funds | $24.1B |
| META PLATFORMS INC-CLASS AMETA | 75 funds | $75.5B |
| ELI LILLY & COLLY | 75 funds | $52.6B |
| INTUITIVE SURGICAL INCISRG | 75 funds | $20.3B |
| BRISTOL-MYERS SQUIBB COBMY | 74 funds | $8.6B |
| VISA INC-CLASS A SHARESV | 73 funds | $42.8B |
| MASTERCARD INC - AMA | 73 funds | $37.0B |
| UNITEDHEALTH GROUP INCUNH | 73 funds | $19.2B |
| NEWMONT CORPNEM | 73 funds | $7.3B |
Ranked by how many of SIBN's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 24, 2026 | FRANCIS LAURA | Chief Executive Officer, Director | Sell (S) | 26K | $523K |
| Aug 21, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell (S) | 11K | $225K |
| Aug 21, 2026 | FRANCIS LAURA | Chief Executive Officer, Director | Sell (S) | 4K | $79K |
| Aug 20, 2026 | FRANCIS LAURA | Chief Executive Officer, Director | Sell (S) | 52K | $1.0M |
| Aug 19, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell (S) | 6K | $112K |
| Aug 17, 2026 | FRANCIS LAURA | Chief Executive Officer, Director | Sell (S) | 2K | $37K |
| Aug 17, 2026 | FRANCIS LAURA | Chief Executive Officer, Director | Sell (S) | 2K | $42K |
| Aug 17, 2026 | FRANCIS LAURA | Chief Executive Officer, Director | Sell (S) | 3K | $60K |
| Aug 17, 2026 | FRANCIS LAURA | Chief Executive Officer, Director | Sell (S) | 4K | $68K |
| Aug 17, 2026 | FRANCIS LAURA | Chief Executive Officer, Director | Sell (S) | 4K | $73K |
| Aug 17, 2026 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell (S) | 2K | $35K |
| Aug 17, 2026 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell (S) | 2K | $35K |
Connected entities for SIBN
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/SIBN/capital-change-brief"
Use Arkolith's capital_change_brief for SIBN. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SIBN. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.