24 tracked 13F filers disclose a position in CALC as of the latest SEC 13F filings, a combined $3.0M 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 | HEIGHTS CAPITAL MANAGEMENT, INC | $1.6M | 1.6M | ▲New +1.6M sh | Q2 2026 | |
| 2 | Stonepine Capital Management, LLC | $545K | 622K | ▲New +622K sh | Q2 2026 | |
| 3 | L1 Global Manager Pty Ltd | $256K | 249K | ▲New +249K sh | Q2 2026 | |
| 4 | JANE STREET GROUP, LLC | $96K | 179K | ▲+830% Added · +159K sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $91K | 169K | →First observed position No prior filed position | Q1 2026 | |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $69K | 128K | ▲+45% Added · +40K sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $114K | 110K | ▼−10% Reduced · −13K sh | Q2 2026 | |
| 8 | 180 WEALTH ADVISORS, LLC | $86K | 83K | ▼−34% Reduced · −43K sh | Q2 2026 | |
| 9 | VANGUARD FIDUCIARY TRUST CO | $25K | 46K | →First observed position No prior filed position | Q1 2026 | |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $17K | 31K | ▲New +31K sh | Q1 2026 | |
| 11 | STATE STREET CORP | $18K | 17K | —Held | Q2 2026 | |
| 12 | TritonPoint Partners, LLC | $16K | 15K | —Held | Q2 2026 | |
| 13 | FIRST MANHATTAN CO. LLC. | $7K | 13K | —Held | Q1 2026 | |
| 14 | SIMPLEX TRADING, LLC | $7K | 13K | ▲New +13K sh | Q1 2026 | |
| 15 | NORTHERN TRUST CORP | $7K | 13K | —Held | Q1 2026 | |
| 16 | Sound View Wealth Advisors Group, LLC | $10K | 10K | —Held | Q2 2026 | |
| 17 | Rockefeller Capital Management L.P. | $3K | 5K | ▼−50% Reduced · −5K sh | Q1 2026 | |
| 18 | Tower Research Capital LLC (TRC) | $1K | 2K | ▲New +2K sh | Q1 2026 | |
| 19 | BROWN BROTHERS HARRIMAN & CO | $317 | 308 | —Held | Q2 2026 | |
| 20 | OSAIC HOLDINGS, INC. | $58 | 107 | —Held | Q1 2026 | |
| 21 | SBI Securities Co., Ltd. | $90 | 87 | —Held | Q2 2026 | |
| 22 | UBS Group AG | $9 | 17 | ▼−98% Reduced · −1K sh | Q1 2026 | |
| 23 | WELLS FARGO & COMPANY/MN | $5 | 10 | —Held | Q1 2026 | |
| 24 | BNP PARIBAS FINANCIAL MARKETS | $2 | 3 | ▼−84% Reduced · −16 sh | 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 CALC and 1 added to an existing one, while 0 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 |
|---|---|---|
| CABALETTA BIO INCCABA | 5 funds | $10.7M |
| APPLE INCAAPL | 4 funds | $1.1B |
| PALANTIR TECHNOLOGIES INC-APLTR | 4 funds | $1.1B |
| NVIDIA CORPNVDA | 4 funds | $1.0B |
| MICRON TECHNOLOGY INCMU | 4 funds | $960.0M |
| SANDISK CORPSNDK | 4 funds | $554.8M |
| CHEVRON CORPCVX | 4 funds | $453.2M |
| INTEL CORPINTC | 4 funds | $364.1M |
| ALPHABET INC-CL AGOOGL | 4 funds | $363.6M |
| UNITEDHEALTH GROUP INCUNH | 4 funds | $331.9M |
| BROADCOM INCAVGO | 4 funds | $330.1M |
| LINDE PLCLIN | 4 funds | $328.7M |
Ranked by how many of CALC's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 25, 2026 | Middleton Fred A | Director, 10% Owner | Buy (P) | 249K | $200K |
| Sep 18, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 3K | $8K |
| Sep 15, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 3K | $9K |
| Sep 12, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 5K | $16K |
| Sep 9, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 2K | $7K |
| Aug 29, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 800 | $2K |
| Aug 28, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 9K | $26K |
| Aug 21, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 4K | $10K |
| Aug 20, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 2K | $5K |
| Aug 19, 2025 | Hebbar Sudarshan | Chief Medical Officer | Buy (P) | 10K | $27K |
| Aug 19, 2025 | Roberts Eric W | CHIEF BUSINESS OFFICER, Director, 10% Owner | Buy (P) | 1K | $3K |
| Aug 15, 2025 | Hebbar Sudarshan | Chief Medical Officer | Buy (P) | 4K | $12K |
Connected entities for CALC
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/CALC/capital-change-brief"
Use Arkolith's capital_change_brief for CALC. 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 CALC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.