GraniteShares YieldBOOST Biotec (BIOY) — Cost to Borrow & Stock Loan Fee
Latest borrow fee for BIOY: 128.27% per year (as of Jul 6, 2026 1:56 PM ET) . Shortable shares available: 0.
Over the last window (Jun 15, 2026 – Jul 6, 2026) , borrow fees ranged from 114.87% to 128.28%, averaging 118.96% across 990 samples.
Frequently asked questions
What is the cost to borrow BIOY?
The latest borrow fee for BIOY is 128.27% per year, sourced from IBKR.
Why does borrow fee change?
Borrow fees rise when fewer shares are available to lend and fall when supply grows. Low-float, high-interest names often show sharp intraday fee spikes.
How often is CTB updated?
finshort polls IBKR throughout each trading session. Borrow fees and shortable share counts are refreshed every few minutes during market hours.