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Check out our Dark Pool Levels

FSLY
Fastly, Inc. Class A Common Stock
stock NASDAQ

At Close
Aug 10, 2026 3:59:56 PM EDT
27.75USD+20.862%(+4.79)14,320,843
27.74Bid   31.89Ask   4.15Spread
Pre-market
Aug 10, 2026 9:28:30 AM EDT
22.60USD-1.568%(-0.36)24,289
After-hours
Aug 10, 2026 4:52:30 PM EDT
27.64USD-0.396%(-0.11)10,967
OverviewOption ChainMax PainOptionsHistoricalExchange VolumeDark Pool LevelsDark Pool PrintsExchangesShort VolumeShort Interest - DailyShort InterestBorrow Fee (CTB)Failure to Deliver (FTD)Short InterestTrendsNewsMore
for Daily Short Interest
FSLY Short Interest (SI) Latest - Official
As of 2026-07-15, there were 25,531,692 shares short with a short interest of 17.57%.

FSLY Short Interest - Official
 

FSLY Short Position Change - Official
 
FSLY Short Interest - Official chartexchange.com
Historical data is split-adjusted.
1) Data from Finra. Finra publishes an updated file every two weeks.
2) Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.



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