The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query AMST owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/AMST"
Use Arkolith to show who owns AMST, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Focus Partners Wealth | $305K | 166K | ▼−0.3% Reduced · −500 sh | Q1 2026 | |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | $99K | 54K | ▲+65% Added · +21K sh | Q1 2026 | |
| 3 | STATE STREET CORP | $58K | 32K | —Held | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $56K | 30K | ▲New +30K sh | Q1 2026 | |
| 5 | VANGUARD FIDUCIARY TRUST CO | $25K | 14K | ▲New +14K sh | Q1 2026 | |
| 6 | XTX Topco Ltd | $19K | 10K | ▲New +10K sh | Q1 2026 | |
| 7 | OSAIC HOLDINGS, INC. | $18K | 10K | —Held | Q1 2026 | |
| 8 | JPMORGAN CHASE & CO | $11K | 6K | —Held | Q1 2026 | |
| 9 | UBS Group AG | $5K | 3K | ▲New +3K sh | Q1 2026 | |
| 10 | Tower Research Capital LLC (TRC) | $3K | 2K | ▼−14% Reduced · −283 sh | Q1 2026 | |
| 11 | CITIGROUP INC | $2 | 1 | ▲New +1 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 30, 2026 | Brewer Barbie | Director | Grant (A) | 10K | $0 |
| Jun 30, 2026 | LOSH J MICHAEL | Director | Grant (A) | 11K | $0 |
| Jun 30, 2026 | OMENN GILBERT S | Director | Grant (A) | 9K | $0 |
| Jun 30, 2026 | Parmer George | Director | Grant (A) | 9K | $0 |
| Jun 29, 2026 | Berman Sarah | CHIEF FINANCIAL OFFICER | Grant (A) | 10K | $0 |
| Apr 28, 2026 | Sastry Ann Marie | CHIEF EXECUTIVE OFFICER, Director | Buy (P) | 174K | $250K |
| Apr 28, 2026 | Sastry Ann Marie | CHIEF EXECUTIVE OFFICER, Director | Buy (P) | 174K | $0 |
| Apr 28, 2026 | Sastry Ann Marie | CHIEF EXECUTIVE OFFICER, Director | Buy (P) | 174K | $0 |
| Apr 28, 2026 | Parmer George | Director | Buy (P) | 244K | $350K |
| Apr 28, 2026 | Parmer George | Director | Buy (P) | 244K | $0 |
| Apr 28, 2026 | Parmer George | Director | Buy (P) | 244K | $0 |
| Mar 31, 2026 | OMENN GILBERT S | Director | Grant (A) | 7K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| SS SPDR S&P 500 ETF TRUST-USSPY | 1 funds | $116.0M |
| ISHARES CORE MSCI EMERGINGIEMG | 1 funds | $76.2M |
| ALPHABET INC-CL AGOOGL | 1 funds | $64.6M |
| VANGUARD FTSE DEVELOPED ETFVEA | 1 funds | $59.3M |
| NVIDIA CORPNVDA | 1 funds | $56.1M |
| ISHARES CHINA LARGE-CAP ETFFXI | 1 funds | $53.8M |
| ISHARES MSCI EMERGING MARKETEEM | 1 funds | $44.5M |
| VESTAS WIND SYSTEMS A/SVWSYF | 1 funds | $37.3M |
| ISHARES 1-3 YEAR TREASURY BOSHY | 1 funds | $25.2M |
| ISHARES MSCI SOUTH KOREA ETFEWY | 1 funds | $24.0M |
| SPDR GOLD SHARESGLD | 1 funds | $24.0M |
| TESLA INCTSLA | 1 funds | $23.9M |
Ranked by how many of AMST's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for AMST. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.