About historical data charts
Chart any US-listed stock's short interest, short volume ratio, cost to borrow, and price history. Short interest history extends across years of FINRA bi-monthly reports, short volume is daily from Reg SHO data, and cost-to-borrow history is captured from Interactive Brokers throughout each session.
Frequently asked questions
How far back does short interest history go?
finshort stores every FINRA bi-monthly settlement report it has collected per symbol, letting you chart multi-year short interest trends alongside price, short volume, and borrow fee history.
Why does short interest only change twice a month?
FINRA collects short interest from broker-dealers on two settlement dates per month (mid-month and month-end) and publishes several business days later. Daily signals like short volume and cost to borrow fill the gap between reports.