Gossamer Bio Inc
Gossamer Bio Inc (GOSS) Unusual Options Activity Today
GOSS options volume power reached 2.91x on the previous trading day. The highest reading was on the $1 PUT expiring 2026-09-18.
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Checking GOSS unusual options activity helps you spot when traders are making outsized bets on Gossamer Bio Inc before the broader market catches on. Gossamer Bio Inc's unusual options activity flags contracts trading at multiples of their average daily volume, often signaling that informed money is positioning ahead of a catalyst. Use our scanner to monitor GOSS unusual options activity today and surface the prints that deserve a second look.
Unusual options flow typically refers to trades where volume vastly exceeds open interest at a given strike, or where total contract volume on a name spikes well above its norm. Watching GOSS unusual options flow today can reveal large block trades, sweeps across exchanges, and aggressive directional bets. Tracking GOSS unusual options volume across calls and puts helps you separate hedging activity from genuinely speculative positioning, and GOSS unusual options flow data becomes especially valuable around earnings, product launches, and macro events.
Gossamer Bio, Inc., a clinical-stage biopharmaceutical company, focuses on discovering, acquiring, developing, and commercializing therapeutics in the disease areas of immunology, inflammation, and oncology in the United States. The company is developing GB002, an inhaled, small molecule, platelet-derived growth factor receptor, or PDGFR, colonystimulating factor 1 receptor, or CSF1R, and c-KIT inhibitor for the treatment of pulmonary arterial hypertension; GB004, a gut-targeted, oral small molecule for the treatment of inflammatory bowel disease; GB5121, an oral, irreversible, covalent, small molecule inhibitor of Bruton's Tyrosine Kinase for the treatment of primary central nervous system lymphoma; and GB7208, an oral, small molecule, BTK inhibitor for the treatment of multiple sclerosis.
It has license agreements with Pulmokine, Inc. to develop and commercialize GB002 and related backup compounds; and Aerpio Pharmaceuticals, Inc. to develop and commercialize GB004 and related compounds. The company was formerly known as FSG, Bio, Inc. and changed its name to Gossamer Bio, Inc. in 2017. Gossamer Bio, Inc. was incorporated in 2015 and is headquartered in San Diego, California.
Catalysts rarely arrive without a footprint, and GOSS unusual options activity is often where that footprint shows up first. Our scanner tracks Gossamer Bio Inc's unusual options flow in real time, ranks prints by volume-to-open-interest, premium spent, and aggressor side, and separates real conviction from noise. Whether you're looking at GOSS unusual options volume on the call side or chasing put sweeps, Gossamer Bio Inc's unusual options flow today is one click away, so put it on your radar before the headlines hit.
| 0.50 | — | 0.05 | 0.05 | 553% | 0 | 177 | 0.00% |
| 1.00 | — | 3.90 | 3.90 | 1,000% | 0 | 0 | — |
| 1.50 | — | 3.90 | 3.90 | 1,000% | 0 | 0 | — |
| 2.00 | — | 3.90 | 3.90 | 1,000% | 0 | 0 | — |
| 3.00 | — | 3.90 | 3.90 | 1,000% | 0 | 1 | 0.00% |
| 0.50 | — | 0.40 | 0.40 | 507% | 0 | 7 | 0.00% |
| 1.00 | — | 0.90 | 0.90 | 619% | 0 | 1 | 0.00% |
| 1.50 | — | 1.40 | 1.40 | 682% | 0 | 6 | 0.00% |
| 2.00 | — | 1.90 | 1.90 | 728% | 0 | 6 | 0.00% |
| 3.00 | 0.55 | 2.90 | 1.73 | 86% | 0 | 1 | 0.00% |
As of September 30, 2026
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