QUIDEL CORP's ticker is and the CUSIP is 74838J901. A total of 2 filers reported holding QUIDEL CORP in Q4 2018. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $4,566,000 | -24.7% | 40,600 | -9.6% | 0.01% | 0.0% |
| Q4 2021 | $6,061,000 | +40.3% | 44,900 | +46.7% | 0.01% | 0.0% |
| Q3 2021 | $4,319,000 | -2.3% | 30,600 | -11.3% | 0.01% | 0.0% |
| Q2 2021 | $4,420,000 | +178.7% | 34,500 | +178.2% | 0.01% | +150.0% |
| Q1 2021 | $1,586,000 | -54.0% | 12,400 | -35.4% | 0.00% | -66.7% |
| Q4 2020 | $3,449,000 | +13.1% | 19,200 | +38.1% | 0.01% | -40.0% |
| Q3 2020 | $3,049,000 | -51.7% | 13,900 | -50.7% | 0.01% | -65.5% |
| Q2 2020 | $6,309,000 | +726.9% | 28,200 | +261.5% | 0.03% | +383.3% |
| Q1 2020 | $763,000 | +2212.1% | 7,800 | +1460.0% | 0.01% | – |
| Q3 2018 | $33,000 | -89.6% | 500 | -91.8% | 0.00% | -100.0% |
| Q1 2018 | $316,000 | +45.6% | 6,100 | +22.0% | 0.00% | +50.0% |
| Q4 2017 | $217,000 | +5325.0% | 5,000 | +4900.0% | 0.00% | – |
| Q3 2017 | $4,000 | – | 100 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 30,600 | $4,319,000 | 0.01% |
| SIMPLEX TRADING, LLC | 25,500 | $3,279,000 | 0.00% |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% |
| WELLS FARGO & COMPANY/MN | 7,400 | $1,045,000 | 0.00% |