QUIDEL CORP's ticker is QDEL and the CUSIP is 74838J101. A total of 390 filers reported holding QUIDEL CORP in Q4 2020. The put-call ratio across all filers is 1.38 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $2,161,000 | +413.3% | 19,218 | +516.8% | 0.02% | +700.0% |
| Q4 2021 | $421,000 | -64.6% | 3,116 | -63.0% | 0.00% | -66.7% |
| Q3 2021 | $1,189,000 | +41.2% | 8,421 | +28.2% | 0.01% | +50.0% |
| Q2 2021 | $842,000 | +19.4% | 6,570 | +19.2% | 0.00% | 0.0% |
| Q1 2021 | $705,000 | -86.6% | 5,514 | -81.1% | 0.00% | -85.7% |
| Q4 2020 | $5,246,000 | +335.7% | 29,204 | +442.7% | 0.03% | +180.0% |
| Q2 2020 | $1,204,000 | +34.2% | 5,381 | -41.3% | 0.01% | +25.0% |
| Q1 2020 | $897,000 | +149.2% | 9,169 | +91.0% | 0.01% | +166.7% |
| Q4 2019 | $360,000 | +141.6% | 4,800 | +98.2% | 0.00% | +200.0% |
| Q3 2019 | $149,000 | -79.9% | 2,422 | -80.7% | 0.00% | -80.0% |
| Q2 2019 | $743,000 | -80.9% | 12,523 | -78.9% | 0.01% | -86.1% |
| Q1 2019 | $3,891,000 | +2.0% | 59,438 | -23.9% | 0.04% | +9.1% |
| Q4 2018 | $3,814,000 | +89.8% | 78,126 | +153.4% | 0.03% | +120.0% |
| Q3 2018 | $2,009,000 | -17.1% | 30,831 | -15.4% | 0.02% | -31.8% |
| Q2 2018 | $2,423,000 | +30.3% | 36,430 | +1.5% | 0.02% | +46.7% |
| Q1 2018 | $1,859,000 | +20.6% | 35,885 | +0.9% | 0.02% | +7.1% |
| Q4 2017 | $1,542,000 | -7.0% | 35,560 | -5.9% | 0.01% | -6.7% |
| Q3 2017 | $1,658,000 | +59.3% | 37,804 | -1.4% | 0.02% | +66.7% |
| Q2 2017 | $1,041,000 | +29.6% | 38,347 | +8.1% | 0.01% | +28.6% |
| Q1 2017 | $803,000 | +0.1% | 35,476 | -5.2% | 0.01% | 0.0% |
| Q4 2016 | $802,000 | -12.3% | 37,429 | -9.7% | 0.01% | -30.0% |
| Q3 2016 | $915,000 | +48.5% | 41,440 | +20.2% | 0.01% | +150.0% |
| Q2 2016 | $616,000 | -5.4% | 34,465 | -8.7% | 0.00% | -20.0% |
| Q1 2016 | $651,000 | -15.1% | 37,744 | +4.3% | 0.01% | 0.0% |
| Q4 2015 | $767,000 | +7.7% | 36,193 | -4.0% | 0.01% | +25.0% |
| Q3 2015 | $712,000 | -15.4% | 37,714 | +2.8% | 0.00% | -33.3% |
| Q2 2015 | $842,000 | -16.2% | 36,689 | -1.5% | 0.01% | 0.0% |
| Q1 2015 | $1,005,000 | +256.4% | 37,253 | +282.3% | 0.01% | +500.0% |
| Q4 2014 | $282,000 | +108.9% | 9,744 | +104.6% | 0.00% | 0.0% |
| Q3 2013 | $135,000 | – | 4,762 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| ORACLE INVESTMENT MANAGEMENT INC | 1,759,421 | $316,080,000 | 39.61% |
| Birchview Capital, LP | 58,644 | $10,535,000 | 6.07% |
| Trellus Management Company, LLC | 39,810 | $7,152,000 | 5.90% |
| MANA Advisors LLC | 1,364 | $245,000 | 4.53% |
| Cannell & Co. | 493,107 | $88,587,000 | 2.94% |
| Brown Capital Management | 2,282,444 | $410,041,000 | 2.83% |
| Trellus Management Company, LLC | 15,000 | $2,695,000 | 2.22% |
| GAGNON SECURITIES LLC | 58,936 | $10,588,000 | 1.69% |
| PREMIER ASSET MANAGEMENT LLC | 40,470 | $7,270,000 | 1.49% |
| Millrace Asset Group, Inc. | 11,926 | $2,143,000 | 1.49% |