iShares

iShares ETF holdings to Watchlist. A single-file client-side tool that reads the generated ./api/ishares static feed (iShares Data Download SpreadsheetML (.xls) exports, Yahoo Finance history) into a searchable ETF/asset-class catalog with per-fund tabs, watchlist aggregation, ticker copy and CSV/TXT export — the same look, feel, columns and business logic as the sibling applications.

Using Bun

bunx degit daggerok/iShares#main ./12345 && cd $_
bunx serve . -p 1234
open http://0:1234

The published application is available at https://daggerok.github.io/iShares/.

Updating the static iShares data

Run the updater with Bun:

bun test scripts/update-data.test.ts
./scripts/update-data.ts

Run ./scripts/update-data.ts -h (or --help) to print every configuration variable with its default and usage examples.

The Update iShares ETF data GitHub Actions workflow exposes the same settings as manual inputs. All supplied filters use AND logic.

Data sources

Block	Source
Catalog (all US iShares ETFs)	https://www.ishares.com/us/products/etf-product-list/1524258966511.ajax?fileName=productView&fileType=xls (iShares product list XLS)
Holdings per fund	https://www.ishares.com/us/products/{TICKER}/1467271812596.ajax?fileName={TICKER}_holdings&fileType=xls (per-fund holdings XLS)
Daily history, distributions	Yahoo Finance chart API for price history
Fallback	Previously published api/ishares/index.json as catalog fallback

Each fund carries a derived metrics object that powers the catalog columns shared with the sibling sites:

• ytd / tr1y — official YTD and 1-year returns → YTD Return, TR 1Y
• cagr3y / cagr5y / cagr10y — published annualized 3Y/5Y/10Y figures → CAGR 3Y/5Y/10Y
• tr3y / tr5y / tr10y — cumulative 3Y/5Y/10Y figures (1 + CAGR)^n - 1 → TR 3Y/5Y/10Y
• siAnn — since-inception annualized → SI Ann.
• dividendYield — 12-month trailing yield or indicated yield (latest distribution × frequency ÷ price)
• secYield — 30-day SEC yield when published; — otherwise

Update controls

Environment variable	Default	Meaning
MAX_FETCHES	all	Batch size: with a positive value the updater continues after the committed cursor in api/ishares/update-state.json; empty or 0 is a full pass — every fund is refreshed in one run.
REQUEST_SLEEP	1	Minimum delay in seconds between outgoing request starts, including retries.
CONCURRENCY	2	Number of parallel fund update workers. Request starts are still globally spaced by REQUEST_SLEEP.
AUM	:	Net Assets range. Each bound may be a USD amount or K/M/B/T, or one of nano, micro, small, mid, large.
TER	:	Expense ratio range in % (strict min:max).
DIVIDEND_YIELD	:	Dividend-yield percentage range.
TICKERS	all	Space-, comma- or semicolon-separated ticker allowlist, e.g. IVV DGRO DVY HDV.
HOLDINGS_PAGE_SIZE	250	Rows in each generated current-holdings JSON page.
HISTORY_PAGE_SIZE	1000	Rows in each generated daily-history JSON page.
MAX_RETRIES	2	Retries after the initial request. Only network errors and HTTP 408/425/429/5xx are retried with exponential backoff.
SEC_UA	declared UA	Override the SEC User-Agent. SEC policy requires automated tools to declare a contact.
SKIP_YAHOO	off	Skip Yahoo Finance history updates.

TICKERS combines with AUM, TER, yield filters using AND logic; it does not override them. Funds not selected for a successful update keep their prior published metadata and data files.

Examples

MAX_FETCHES=10 ./scripts/update-data.ts
TICKERS="IVV DGRO DVY HDV" ./scripts/update-data.ts
AUM="1B:" TER=":0.5" ./scripts/update-data.ts
PERFORMANCE_1Y="15:" ./scripts/update-data.ts

TypeScript

The browser app is intentionally build-free: index.html carries the markup, styles and bootstrap, and app.tsx is TypeScript compiled in the browser with Babel standalone — no build step, no bundler, no tsconfig.json needed. Bun runs TypeScript out of the box.

Verification before every publish: bun install --frozen-lockfile, bun test, and git diff --check.

Brands table

Brand	Where to get the data
VanEck	vaneck.com | VanEck
JPMorgan	am.jpmorgan.com | JPMorgan
Schwab	schwabassetmanagement.com | Schwab
Invesco	invesco.com | Invesco
iShares	ishares.com | iShares
Fidelity	fidelity.com | Fidelity
Amplify	amplifyetfs.com | Amplify
Vanguard	investor.vanguard.com | Vanguard
SPDR	ssga.com | SPDR
WisdomTree	wisdomtree.com | WisdomTree
Goldman Sachs	am.gs.com | Goldman-Sachs

Sibling applications

Application	Data provider	Repository
VanEck	vaneck.com ETF finder + product pages	VanEck
JPMorgan	am.jpmorgan.com fund explorer + product-data JSON	JPMorgan
Schwab	schwabassetmanagement.com product pages + CSV exports	Schwab
Invesco	invesco.com CSV downloads + Yahoo Finance	Invesco
iShares	iShares (BlackRock) product workbooks	iShares
Fidelity	SEC EDGAR N-PORT-P + Yahoo Finance	Fidelity
Amplify	Amplify ETFs (Firestore data feed)	Amplify
Vanguard	Vanguard product pages + SEC EDGAR N-PORT-P	Vanguard
SPDR	SSGA / State Street public feeds	SPDR
WisdomTree	WisdomTree product table + SEC EDGAR N-PORT-P + Yahoo Finance	WisdomTree
Goldman Sachs	am.gs.com fund finder + detail pages + SEC EDGAR N-PORT-P	Goldman-Sachs

License

MIT — same as all sibling ETF repositories.

iShares® and BlackRock® and the fund names/tickers referenced here are trademarks of BlackRock, Inc. or its affiliates. This is an independent, unofficial tool; it is not affiliated with, endorsed by, or sponsored by BlackRock or iShares. All data is reproduced from iShares' own public downloads for research purposes. All other trademarks, including index names, are the property of their respective owners.