36 tracked 13F filers disclose a position in ECX as of the latest SEC 13F filings, a combined $14.9M 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 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5.0M | 5.1M | —Held | Q1 2026 | |
| 2 | TUDOR INVESTMENT CORP ET AL | $2.1M | 2.2M | ▲+2.9% Added · +61K sh | Q1 2026 | |
| 3 | RENAISSANCE TECHNOLOGIES LLC | $2.0M | 2.0M | ▲+9.4% Added · +174K sh | Q1 2026 | |
| 4 | Legal & General Group Plc | $1.1M | 1.1M | —Held | Q1 2026 | |
| 5 | MARSHALL WACE, LLP | $743K | 758K | ▲+206% Added · +510K sh | Q1 2026 | |
| 6 | UBS Group AG | $667K | 682K | ▼−3.5% Reduced · −24K sh | Q1 2026 | |
| 7 | JANE STREET GROUP, LLC | $615K | 628K | ▼−73% Reduced · −1.7M sh | Q1 2026 | |
| 8 | Altshuler Shaham Ltd | $24K | 600K | —Held | Q2 2026 | |
| 9 | Mitsubishi UFJ Asset Management Co., Ltd. | $578K | 591K | ▼−4.6% Reduced · −28K sh | Q1 2026 | |
| 10 | BARCLAYS PLC | $331K | 338K | ▼−4.6% Reduced · −16K sh | Q1 2026 | |
| 11 | STATE STREET CORP | $346K | 269K | ▼−78% Reduced · −969K sh | Q2 2026 | |
| 12 | XTX Topco Ltd | $210K | 215K | ▲+524% Added · +180K sh | Q1 2026 | |
| 13 | BlackRock, Inc. | $189K | 194K | ▲+30% Added · +45K sh | Q1 2026 | |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | $184K | 143K | ▼−32% Reduced · −66K sh | Q2 2026 | |
| 15 | Susquehanna Portfolio Strategies, LLC | $139K | 142K | ▼−18% Reduced · −30K sh | Q1 2026 | |
| 16 | Themes Management Co LLC | $155K | 120K | ▲+17% Added · +18K sh | Q2 2026 | |
| 17 | Centiva Capital, LP | $112K | 114K | ▲New +114K sh | Q1 2026 | |
| 18 | MILLENNIUM MANAGEMENT LLC | $71K | 72K | ▲+157% Added · +44K sh | Q1 2026 | |
| 19 | HSBC HOLDINGS PLC | $60K | 63K | ▲+6.2% Added · +4K sh | Q1 2026 | |
| 20 | NORTHERN TRUST CORP | $55K | 56K | ▼−1.2% Reduced · −696 sh | Q1 2026 | |
| 21 | Green Alpha Advisors, LLC | $67K | 52K | ▲+5.8% Added · +3K sh | Q2 2026 | |
| 22 | Quantbot Technologies LP | $49K | 51K | ▲+16% Added · +7K sh | Q1 2026 | |
| 23 | Vanguard Personalized Indexing Management, LLC | $34K | 26K | ▲New +26K sh | Q2 2026 | |
| 24 | CITADEL ADVISORS LLC | $22K | 23K | ▼−99% Reduced · −2.4M sh | Q1 2026 | |
| 25 | BANK OF AMERICA CORP /DE/ | $15K | 15K | ▲+58% Added · +6K 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 ECX and 10 added to an existing one, while 3 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 |
|---|---|---|
| ARISTA NETWORKS INCANET | 19 funds | $1.1B |
| NVIDIA CORPNVDA | 18 funds | $21.0B |
| ALPHABET INC-CL AGOOGL | 18 funds | $9.1B |
| BROADCOM INCAVGO | 18 funds | $7.0B |
| MICRON TECHNOLOGY INCMU | 18 funds | $5.3B |
| JPMORGAN CHASE & COJPM | 18 funds | $4.5B |
| GARMIN LTDGRMN | 18 funds | $388.5M |
| AMAZON.COM INCAMZN | 17 funds | $11.7B |
| META PLATFORMS INC-CLASS AMETA | 17 funds | $6.5B |
| TESLA INCTSLA | 17 funds | $6.2B |
| ADVANCED MICRO DEVICESAMD | 17 funds | $2.5B |
| INTUITIVE SURGICAL INCISRG | 17 funds | $2.4B |
Ranked by how many of ECX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 27, 2023 | Heng Jun Hong | Director | Sell (S) | 3K | $9K |
| Sep 26, 2023 | Heng Jun Hong | Director | Sell (S) | 47K | $157K |
| Class | 13F holders | Value held |
|---|---|---|
| ECXthis pageStock | 36 funds | $14.9M |
| ECXWWWarrant | 25 funds | $712K |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for ECX
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/ECX/capital-change-brief"
Use Arkolith's capital_change_brief for ECX. 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 ECX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.