Coverage
4 Jan 2013 – 8 Sep 2026
Frequency
Weekly
Files
2

Weekly average securities lending fee (aluguel de ações) for Brazilian equities traded in the BTC market, expressed as a fraction per year (0.015 = 1.5%). Each observation is the average of the daily loan fee over the week, dated on its last trading day.

This is the weekly version of the daily average loan fee published on the Short Interest page (in percent per year there, as a fraction here). The series was discontinued in September 2023 and resumed in October 2026, rebuilt from the daily data for the whole period since 2013. The rebuilt history moves with the version published until 2023 (correlation 0.82) but sits about 16% higher, so re-download the file rather than appending to an old copy.

The few weeks above 5% in 2013–2014 are real, not data errors: they are loans of VALE5 and PETR4 taken around interest-on-equity (JCP) record dates, settled three sessions later.

Read it directly

# Python
import pandas as pd
df = pd.read_csv("https://nefin.com.br/nefindata/loan-fees/loan_fees.csv")

# R
df <- readr::read_csv("https://nefin.com.br/nefindata/loan-fees/loan_fees.csv")

How to cite

Please cite the dataset when you use it in published work.

NEFIN (2026). Loan Fees.
Center for Research in Financial Economics, University of São Paulo.
https://nefin.com.br/data/loan-fees/