High Mutual Fund Concentration US Stocks — Held by 10+ Funds on NYSE & NASDAQ

Mutual fund concentration refers to how many distinct mutual funds own a stock. Being held by 10+ separate funds means 10 independent active portfolio managers have each made a researched decision to include the stock in their professionally managed portfolio. This breadth of active manager conviction is a meaningful quality signal beyond any single institution's view.

Mutual fund managers (unlike ETF managers) actively choose each stock — they're paid to select the best investments for their mandates. When multiple independent active managers own the same stock, it reflects a convergence of professional research that's hard to achieve in low-quality businesses. It also means the stock benefits from regular re-evaluation as each fund conducts quarterly reviews.

US-registered mutual funds and institutional investors above $100M AUM are required to file 13F reports with the SEC within 45 days of each quarter end. These public filings disclose all equity holdings. StockSifting aggregates 13F data to show mutual fund holder counts. The 45-day lag means the data reflects positions as of the most recent quarter end, not real-time.

This screen specifically tracks mutual fund holders, which includes actively managed funds. Passive ETFs (index funds) are counted separately as institutional owners. The distinction matters: a mutual fund manager who chose to own the stock represents active conviction; an index ETF owns the stock mechanically based on index inclusion.

Ten independent active managers have each independently concluded the stock merits inclusion. Each has gone through their firm's investment committee, compliance review, and sector analyst scrutiny. The convergence across 10 separate decision-making processes is harder to achieve for low-quality companies. 10 is a minimum threshold — 25+ funds represents very broad professional consensus.

Yes. Sector peaks often coincide with peak institutional ownership as momentum funds chase performance. The most crowded trades — held by the most funds — can be the most vulnerable when sentiment reverses, because the simultaneous selling from multiple funds has limited natural buyers. Mutual fund concentration is a quality signal but not a valuation signal.

Higher mutual fund ownership generally provides more consistent price support from ongoing inflows, regular rebalancing buying, and dividend reinvestment. However, it can also amplify selling pressure during fund redemptions — when investors sell their mutual fund shares, managers must sell underlying holdings, including stocks with high fund concentration.

The underlying 13F data is updated quarterly as new filings are processed. The screen reflects the most recent available quarter's fund holder counts. For stocks where changes in ownership might be material, checking the 13F filing directly on SEC EDGAR provides the most current available data (with the inherent 45-day lag from quarter end).

Large-cap quality growth and value stocks with consistent earnings histories typically attract the most mutual fund ownership: technology platforms, healthcare leaders, consumer staples brands, and financial sector leaders. Small-cap stocks are frequently excluded from institutional mandates due to liquidity and size requirements, explaining their typically lower fund concentration.

Neither is definitively better — they're different signals. High active mutual fund ownership signals researched conviction from independent human analysts. High passive ETF ownership reflects index inclusion and mechanical demand. For quality signals, active fund ownership carries more meaning because it reflects deliberate investment decisions. For price support, passive ETF ownership (especially from large index funds) provides highly consistent demand.