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Large Decrease in Open Interest

GOSS Gossamer Bio0.43-0.02 (-4.9%)

The open interest (OI) on the 20-Mar-26 1.50 strike had no change for calls and decreased by 36,590 put contracts. The total OI for the expiration was decreased by 4x the average option volume. View Open Interest
$GOSS Gossamer Bio Option Order Flow Sentiment is 98.9% Bullish.
Unusual Option Volume

GOSS Gossamer Bio0.45+0.02 (+3.7%)

Gossamer Bio trades 11,052 contracts. The highest volume is in the 20-Mar-26 1 puts, which is -122.2% below the current price. News: INVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Gossamer Bio, Inc. - GOSS
Large Decrease in Open Interest

GOSS Gossamer Bio0.41-0.01 (-3.1%)

The open interest (OI) on the 20-Mar-26 2.00 strike decreased by 242 call contracts and 24,370 puts. The total OI for the expiration was decreased by 3x the average option volume. View Open Interest
Something to keep an eye on: Mostly professional traders are showing a short build up in $GOSS. Net option volume delta is -209 K!
Large Increase in Open Interest

GOSS Gossamer Bio0.42-1.71 (-80.3%)

The open interest (OI) on the 20-Mar-26 3.00 strike increased by 4,288 call contracts and 4,040 puts. The total OI for the expiration was increased by 2x the average option volume. View Open Interest
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