Quidel Corporation (QDEL)
Healthcare
Medical Devices
16.80 $
+1.2%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Quidel Corporation (QDEL)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 91.1% of the shares are freely tradable; institutional investors hold 124.1%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
124.1%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
0.9%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
91.1%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
24.8%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
68Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.32 | 10,449,127 | +1.0 | 03/31/2026 |
| Vanguard Group Inc | 11.10 | 7,572,075 | -0.8 | 12/31/2025 |
| FMR Inc | 9.67 | 6,591,152 | +21.6 | 03/31/2026 |
| T. Rowe Price Investment Management,Inc. | 8.26 | 5,629,965 | -66.4 | 03/31/2026 |
| Newtyn Management LLC | 6.68 | 4,558,472 | +51.2 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.91 | 4,031,768 | +0.0 | 03/31/2026 |
| Rubric Capital Management LP | 4.85 | 3,306,281 | -12.5 | 03/31/2026 |
| Amvescap Plc. | 4.57 | 3,117,469 | -10.2 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.48 | 3,052,710 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.07 | 4,138,797 | +0.0 | 05/29/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.