17 tracked 13F filers disclose a position in CYCN as of the latest SEC 13F filings, a combined $6.4M 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 | Kalehua Capital Management LLC | $5.6M | 1.7M | ▲New +1.7M sh | Q2 2026 | |
| 2 | BRAIDWELL LP | $532K | 157K | ▲New +157K sh | Q2 2026 | |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | $155K | 46K | ▼−46% Reduced · −39K sh | Q2 2026 | |
| 4 | CITADEL ADVISORS LLC | $28K | 18K | ▲New +18K sh | Q1 2026 | |
| 5 | BlackRock, Inc. | $26K | 17K | —Held | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $25K | 16K | →First observed position No prior filed position | Q1 2026 | |
| 7 | VANGUARD FIDUCIARY TRUST CO | $11K | 7K | →First observed position No prior filed position | Q1 2026 | |
| 8 | FMR LLC | $7K | 5K | —Held | Q1 2026 | |
| 9 | UBS Group AG | $5K | 3K | ▲+802% Added · +3K sh | Q1 2026 | |
| 10 | GROUP ONE TRADING LLC | $295 | 192 | —Held | Q1 2026 | |
| 11 | OSAIC HOLDINGS, INC. | $201 | 130 | —Held | Q1 2026 | |
| 12 | MAI Capital Management | $155 | 100 | —Held | Q1 2026 | |
| 13 | Activest Wealth Management | $155 | 100 | —Held | Q1 2026 | |
| 14 | CITIGROUP INC | $137 | 89 | ▼−99% Reduced · −8K sh | Q1 2026 | |
| 15 | WHI TRUST Co LLC | $244 | 72 | —Held | Q2 2026 | |
| 16 | BNP PARIBAS FINANCIAL MARKETS | $8 | 5 | —Held | Q1 2026 | |
| 17 | MORGAN STANLEY | $2 | 1 | —Held | 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, 3 funds opened a new position in CYCN, 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 |
|---|---|---|
| ACLARIS THERAPEUTICS INCACRS | 3 funds | $29.5M |
| UNIQURE NVQURE | 3 funds | $24.2M |
| SURROZEN INCSRZN | 3 funds | $21.2M |
| INTUITIVE SURGICAL INCISRG | 2 funds | $653.0M |
| ELEVANCE HEALTH INCELV | 2 funds | $478.2M |
| THERMO FISHER SCIENTIFIC INCTMO | 2 funds | $469.7M |
| BOSTON SCIENTIFIC CORPBSX | 2 funds | $289.7M |
| GLAUKOS CORPGKOS | 2 funds | $238.5M |
| DANAHER CORPDHR | 2 funds | $223.3M |
| XENON PHARMACEUTICALS INCXENE | 2 funds | $222.6M |
| DIANTHUS THERAPEUTICS INCDNTH | 2 funds | $193.1M |
| ARGENX SE - ADRARGX | 2 funds | $176.4M |
Ranked by how many of CYCN's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Nov 21, 2024 | Greenspan David Gerald | 10% Owner | Sell (S) | 358K | $555K |
| Aug 9, 2023 | MCGUIRE TERRANCE | Director | Sell (S) | 8 | $27 |
| Jun 3, 2021 | MCGUIRE TERRANCE | Director | Buy (P) | 93K | $290K |
| Jun 3, 2021 | MCGUIRE TERRANCE | Director | Buy (P) | 3K | $10K |
| Jun 3, 2021 | Greenspan David Gerald | 10% Owner | Buy (P) | 962K | $3.0M |
| Jun 3, 2021 | Hecht Peter M | Chief Executive Officer, Director | Buy (P) | 823K | $2.7M |
| May 6, 2021 | Hecht Peter M | Chief Executive Officer, Director | Buy (P) | 302K | $734K |
| May 5, 2021 | Hecht Peter M | Chief Executive Officer, Director | Buy (P) | 398K | $1.0M |
| May 4, 2021 | Hecht Peter M | Chief Executive Officer, Director | Buy (P) | 300K | $687K |
| Feb 25, 2021 | Wright Christopher I | Chief Medical Officer | Sell (S) | 3K | $11K |
| Feb 25, 2021 | Gjino Anjeza | Chief Financial Officer | Sell (S) | 2K | $7K |
| Dec 28, 2020 | Currie Mark G | President and CSO | Sell (S) | 20K | $61K |
Connected entities for CYCN
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/CYCN/capital-change-brief"
Use Arkolith's capital_change_brief for CYCN. 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 CYCN. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.