Active ETF Finder

Status

4,200+ US-listed ETFs enumerated, 2,750+ with holdings parsed from SEC N-PORT-P filings, 219 popular mutual funds pre-indexed, and three years of weekly returns for every fund in the scored set. Enter any of those tickers — or any US-listed stock held by an indexed ETF — to rank the Active ETFs most similar to it.

How it works

1. Offline corpus build. Node scripts enumerate every US-listed ETF from NASDAQ Trader, join to SEC's mutual-fund tickers JSON for CIK / series IDs, fetch the latest N-PORT filing for each fund, and parse holdings into a uniform shape. CUSIPs in N-PORT are bridged to tickers against SEC's company-tickers index. Per-stock sector and market-cap come from SEC XBRL company facts and a free quote feed.
2. Input resolution. A ticker is matched against the same profile map the ETFs use, so mutual funds resolve through the curated SEC N-PORT cache and ETFs match themselves.
3. Similarity scoring. Five components — holdings overlap (weighted Jaccard), sector cosine distance, market-cap distribution, style tilt (P/E and P/B proxies), and trailing 3-year weekly return correlation — combine into a composite 0–100 score with per-component breakdown. Missing components re-normalize the composite automatically.
4. Output. A ranked list of Active ETFs with score breakdown and the shared top holdings that explain each match.

Data sources

• NASDAQ Trader daily symbol file — US-listed ETF universe
• SEC EDGAR — N-PORT-P filings, company tickers, XBRL facts
• Yahoo Finance chart API — price and total-return history