Rubico Inc. (RUBI): Cost to Borrow & Stock Loan Fee
Latest borrow fee for RUBI: 183.56% per year (as of Oct 19, 2026 10:19 AM ET) . Shortable shares available: 0.
Over the last window (Sep 21, 2026 – Oct 19, 2026) , borrow fees ranged from 118.73% to 252.08%, averaging 153.08% across 1,281 samples.
Frequently asked questions
What is the cost to borrow RUBI?
The latest borrow fee for RUBI is 183.56% per year.
Why do borrow rates change?
Borrow fees rise when fewer shares are available to lend and fall when supply grows. Low-float, high short interest names often show sharp intraday fee spikes.
How often is CTB updated?
Borrow fees and shortable share counts are refreshed every few minutes during market hours.