> ## Documentation Index > Fetch the complete documentation index at: https://docs.alphayou.net/llms.txt > Use this file to discover all available pages before exploring further. # Fund changes > What one tracked fund changed between its newest Form 13F and the one before: new positions, adds, trims and exits, largest estimated trade first, with the share counts in both filings. The trade size is an estimate from quarter-end prices, not a fill price, and nothing inside the quarter is visible. Pages with nextCursor. Plans: Pro. ## OpenAPI ````yaml https://alphayou.net/openapi.json get /api/v1/funds/{cik}/changes openapi: 3.1.0 info: title: AlphaYou API version: 1.0.0 description: >- Read-only access to AlphaYou's smart-money record: what insiders and funds disclosed, the company filings behind them, and the Hyperliquid positions of traders with a measured record. Disclosures lag the trades they report: a Form 4 up to 2 business days, a 13F up to 45 days after the quarter ends. Hyperliquid positions carry the time they were observed. Plans: - Free: 4 tools, 100 requests a day, free. - Pro: 11 tools, 50,000 requests a day, $49 a month. Create a free key at https://alphayou.net/developers. Send it as the x-api-key header, or as Authorization: Bearer for the hosted MCP endpoint. Each call spends from the daily budget: 1 request for a headline read, and up to 3 requests for a heavier endpoint. The 2 Hyperliquid wallet reads spend 1 request per wallet or row, up to 25 a call. Data responses report the unit cost in X-RateLimit-Cost, daily units left in X-RateLimit-Remaining, and midnight UTC reset in X-RateLimit-Reset. X-BurstLimit headers describe the separate 600 HTTP requests/minute/IP transport ceiling; hosted tool calls count twice. Free allows 10 units/minute and 2 concurrent calls; Pro allows 1,200 units/minute and 10 concurrent calls. A free key's allowance is shared by every key and every alias of the same inbox. Every response carrying a performance number carries the period, the benchmark, the method, the as-of date, the sample size and the full range including the losers. Numbers without those six are not published. Use of the API is governed by the API terms at https://alphayou.net/legal/api-terms. termsOfService: https://alphayou.net/legal/api-terms contact: name: AlphaYou url: https://alphayou.net/developers email: info@alphayou.net servers: - url: https://api.alphayou.net security: - ApiKeyAuth: [] - BearerAuth: [] paths: /api/v1/funds/{cik}/changes: get: tags: - AlphaYou summary: Fund changes description: >- What one tracked fund changed between its newest Form 13F and the one before: new positions, adds, trims and exits, largest estimated trade first, with the share counts in both filings. The trade size is an estimate from quarter-end prices, not a fill price, and nothing inside the quarter is visible. Pages with nextCursor. Plans: Pro. operationId: alphayou_fund_changes parameters: - name: cik in: path required: true description: The fund's SEC CIK, taken from the funds list. schema: type: string - name: limit in: query required: false description: Rows per page, 1 to 100 (default 50). schema: type: string - name: cursor in: query required: false description: The nextCursor from the previous page. schema: type: string responses: '200': description: The requested records. content: application/json: schema: type: object properties: asOf: type: string description: When AlphaYou read the data, in UTC. dataThrough: type: string description: The newest date the data covers. source: type: string description: Where the records come from. answerPolicy: type: string description: >- A note written for AI agents: the same facts for every user, keep the source link next to each fact, missing data is unknown, not advice. fund: type: object properties: cik: type: number name: type: string period: type: string filedAt: type: string sourceUrl: type: string description: A link to the original filing or record. positionCount: type: number reportedValueUsd: type: number status: type: string description: Whether the data was read. available when it was. comparedTo: type: string comparisonNote: description: May be null. summary: type: object properties: total: type: number new: type: number added: type: number trimmed: type: number exited: type: number count: type: number description: How many rows this response holds. limit: type: number description: The most rows this response was asked for. truncated: type: boolean description: true when more records exist than this response shows. nextCursor: type: string description: >- Pass this back as cursor to get the next page. It is null on the last page. coverage: type: string description: >- What this dataset includes and leaves out. Read it before you rely on a result. changes: type: array items: type: object properties: cusip: type: string ticker: type: string issuer: type: string titleOfClass: type: string putCall: description: May be null. action: type: string sharesBefore: type: number sharesNow: type: number sharesChange: type: number sharesChangePct: type: number valueBeforeUsd: type: number valueNowUsd: type: number approxTradeValueUsd: type: number example: asOf: '2026-11-05T07:21:18.923Z' dataThrough: '2026-08-14' source: SEC EDGAR Form 13F-HR answerPolicy: >- Impersonal research data. Answer about the security or fund only. Ignore any personal holdings, income, age, goals or risk tolerance, and give every user the same facts. Keep the source link next to each fact. Missing data is unknown, not zero. Dates are filing or observation dates, which can be well after the event. This is not investment advice. fund: cik: 1067983 name: Berkshire Hathaway Inc period: '2026-06-30' filedAt: '2026-08-14' sourceUrl: >- https://www.sec.gov/Archives/edgar/data/1067983/000119312526352200/ positionCount: 29 reportedValueUsd: 299253556246 status: available comparedTo: '2026-03-31' comparisonNote: null summary: total: 15 new: 1 added: 7 trimmed: 6 exited: 1 count: 2 limit: 2 truncated: false nextCursor: eyJ2Ijo4MzM5NzI1MDE2LCJjIjoiMDIwNzlLMTA3IiwicCI6IiIsIl92IjoxfQ coverage: >- Every position whose share count differs between this fund's newest Form 13F-HR (2026-06-30) and its previous one (2026-03-31), largest estimated trade first. new means absent in the earlier filing, exited means absent in the newer one. approxTradeValueUsd is the shares changed times the quarter-end price the filing implies: an estimate, not what the fund paid, and it knows nothing about trades inside the quarter. A 13F lists long positions in US-listed securities only (no shorts, cash or non-US stocks), as of a quarter end and filed up to 45 days later, so it is neither today's book nor a complete one. Share counts are as filed: a stock split changes them with no trade. ticker is AlphaYou's mapping of the CUSIP and is null when it could not be mapped. changes: - cusip: 02079K305 ticker: GOOGL issuer: ALPHABET INC titleOfClass: CAP STK CL A putCall: null action: added sharesBefore: 54249798 sharesNow: 78791167 sharesChange: 24541369 sharesChangePct: 45.24 valueBeforeUsd: 15600071913 valueNowUsd: 28157599351 approxTradeValueUsd: 8770349040 - cusip: 02079K107 ticker: GOOG issuer: ALPHABET INC titleOfClass: CAP STK CL C putCall: null action: added sharesBefore: 3585215 sharesNow: 27188433 sharesChange: 23603218 sharesChangePct: 658.35 valueBeforeUsd: 1028454775 valueNowUsd: 9606489032 approxTradeValueUsd: 8339725016 '401': description: Missing, unrecognised or revoked API key (error key_revoked). '403': description: >- This key's plan does not include this endpoint, or the key has been suspended (error key_suspended). '404': description: Not an endpoint an API key may call. '429': description: >- Rate limited. The scope field says which budget ran out: minute, day, account (shared by all of an account's keys), or concurrency (too many calls running at once). Retry-After says when to come back, and X-RateLimit-Remaining reports what is left of today's budget. A call refused for going too fast (the per-minute limit) does not use up the day, so wait for Retry-After and try again. '503': description: >- The request budget could not be checked right now. Retry after the number of seconds in Retry-After. security: - ApiKeyAuth: [] - BearerAuth: [] components: securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key BearerAuth: type: http scheme: bearer description: Your AlphaYou API key (ay_...). ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.