102 tracked 13F filers disclose a position in ALTO as of the latest SEC 13F filings, a combined $148.2M 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 | MARSHALL WACE, LLP | $16.2M | 3.3M | ▲+189% Added · +2.2M sh | Q1 2026 | |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $15.4M | 3.2M | →First observed position No prior filed position | Q1 2026 | |
| 3 | TWO SIGMA INVESTMENTS, LP | $9.7M | 2.0M | ▲+139% Added · +1.2M sh | Q1 2026 | |
| 4 | MILLENNIUM MANAGEMENT LLC | $9.3M | 1.9M | ▲+419% Added · +1.5M sh | Q1 2026 | |
| 5 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $8.7M | 1.8M | ▲+68% Added · +724K sh | Q1 2026 | |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $8.1M | 1.7M | ▲+9.8% Added · +150K sh | Q1 2026 | |
| 7 | BlackRock, Inc. | $6.3M | 1.3M | ▲+10% Added · +119K sh | Q1 2026 | |
| 8 | JANE STREET GROUP, LLC | $6.3M | 1.3M | ▲+65% Added · +507K sh | Q1 2026 | |
| 9 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5.3M | 1.1M | ▲+3.3% Added · +34K sh | Q1 2026 | |
| 10 | Hillsdale Investment Management Inc. | $4.8M | 1.0M | ▲+590% Added · +856K sh | Q1 2026 | |
| 11 | Qube Research & Technologies Ltd | $4.7M | 970K | ▲+123% Added · +535K sh | Q1 2026 | |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | $4.3M | 891K | ▲+2.6% Added · +22K sh | Q1 2026 | |
| 13 | DIMENSIONAL FUND ADVISORS LP | $3.2M | 659K | ▲+75% Added · +282K sh | Q1 2026 | |
| 14 | CREATIVE FINANCIAL DESIGNS INC /ADV | $3.5M | 615K | ▼−20% Reduced · −155K sh | Q2 2026 | |
| 15 | GOLDMAN SACHS GROUP INC | $2.9M | 602K | ▼−16% Reduced · −114K sh | Q1 2026 | |
| 16 | BANK OF AMERICA CORP /DE/ | $2.7M | 550K | ▲15× Added · +515K sh | Q1 2026 | |
| 17 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $2.4M | 488K | ▲+8.2% Added · +37K sh | Q1 2026 | |
| 18 | VANGUARD FIDUCIARY TRUST CO | $2.3M | 474K | →First observed position No prior filed position | Q1 2026 | |
| 19 | Walleye Capital LLC | $2.3M | 465K | ▲New +465K sh | Q1 2026 | |
| 20 | Empowered Funds, LLC | $2.0M | 411K | ▲New +411K sh | Q1 2026 | |
| 21 | Connor, Clark & Lunn Investment Management Ltd. | $1.9M | 385K | ▲+166% Added · +240K sh | Q1 2026 | |
| 22 | STATE STREET CORP | $1.8M | 373K | ▲+3.8% Added · +14K sh | Q1 2026 | |
| 23 | MORGAN STANLEY | $1.7M | 354K | ▲+147% Added · +211K sh | Q1 2026 | |
| 24 | Point72 Asset Management, L.P. | $1.6M | 335K | ▲+28% Added · +73K sh | Q1 2026 | |
| 25 | CITADEL ADVISORS LLC | $1.6M | 324K | ▲+70% Added · +134K 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, 21 funds opened a new position in ALTO and 19 added to an existing one, while 5 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 |
|---|---|---|
| MICROSOFT CORPMSFT | 29 funds | $9.8B |
| AMAZON.COM INCAMZN | 29 funds | $9.5B |
| BROADCOM INCAVGO | 29 funds | $5.0B |
| MASTERCARD INC - AMA | 29 funds | $2.4B |
| ELI LILLY & COLLY | 29 funds | $2.0B |
| COSTCO WHOLESALE CORPCOST | 29 funds | $1.9B |
| PALANTIR TECHNOLOGIES INC-APLTR | 29 funds | $1.5B |
| BANK OF AMERICA CORPBAC | 29 funds | $1.1B |
| META PLATFORMS INC-CLASS AMETA | 28 funds | $4.9B |
| MICRON TECHNOLOGY INCMU | 28 funds | $3.6B |
| TESLA INCTSLA | 28 funds | $3.3B |
| NETFLIX INCNFLX | 28 funds | $2.3B |
Ranked by how many of ALTO's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| May 13, 2026 | NATHAN GILBERT E | Director | Buy (P) | 5K | $22K |
| May 12, 2026 | NATHAN GILBERT E | Director | Buy (P) | 20K | $92K |
| Aug 13, 2025 | Sneed James R | Chief Commercial Officer | Buy (P) | 3K | $3K |
| Nov 13, 2024 | NATHAN GILBERT E | Director | Buy (P) | 5K | $7K |
| Nov 13, 2024 | NATHAN GILBERT E | Director | Buy (P) | 25K | $34K |
| Nov 12, 2024 | Olander Robert R. | Chief Financial Officer | Buy (P) | 7K | $10K |
| Nov 12, 2024 | McGregor Bryon T | President & CEO, Director | Buy (P) | 37K | $50K |
| Jun 1, 2023 | NATHAN GILBERT E | Director | Buy (P) | 5K | $10K |
| May 31, 2023 | NATHAN GILBERT E | Director | Buy (P) | 5K | $10K |
| Mar 17, 2023 | NATHAN GILBERT E | Director | Buy (P) | 10K | $17K |
| Mar 16, 2023 | Graham Auste M | Gen. Counsel, VP & Secy | Buy (P) | 3K | $5K |
| Mar 16, 2023 | NATHAN GILBERT E | Director | Buy (P) | 10K | $18K |
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/ALTO/capital-change-brief"
Use Arkolith's capital_change_brief for ALTO. 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 ALTO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.