IWB short interest

Name: IWB short interest
Creator: FinzData

iShares Russell 1000 ETF · Unclassified (ETFs, funds, other) · settlement date 2026-09-30

Shares short	1,554,113
Change vs prior report	137,732 (+9.7%)
Change over six months	+8.7%
Days to cover	2.85 (sector: 0.98)
Average daily volume	546,013
Rank in Unclassified (ETFs, funds, other)	not ranked (OTC, fund or thinly traded)

IWB short interest, last 12 months

Settlement	Shares short	Change	Days to cover	Avg daily volume
2026-09-30	1,554,113	+9.7%	2.85	546,013
2026-09-15	1,416,381	+12.3%	3.52	402,708
2026-08-31	1,261,629	-5.6%	2.61	484,300
2026-08-14	1,336,029	+10.5%	2.20	606,332
2026-07-31	1,209,408	-5.4%	2.61	464,120
2026-07-15	1,277,916	-12.9%	2.84	449,317
2026-06-30	1,468,008	-2.1%	1.91	770,529
2026-06-15	1,498,834	+10.9%	2.35	637,882
2026-05-29	1,351,497	+12.6%	1.93	701,098
2026-05-15	1,200,615	+0.1%	2.01	598,239
2026-04-30	1,199,750	-13.6%	1.19	1,011,747
2026-04-15	1,388,654	-2.8%	1.12	1,238,537
2026-03-31	1,429,132	-24.9%	1.00	2,941,079
2026-03-13	1,903,230	+45.2%	1.05	1,812,640
2026-02-27	1,310,462	-14.5%	1.00	1,423,388
2026-02-13	1,533,458	+21.4%	1.21	1,271,926
2026-01-30	1,263,346	-29.1%	1.00	1,878,215
2026-01-15	1,783,158	-16.5%	1.12	1,594,561
2025-12-31	2,135,191	+2.8%	2.23	955,895
2025-12-15	2,077,893	-7.1%	1.49	1,397,477
2025-11-28	2,237,757	-13.3%	2.24	999,530
2025-11-14	2,582,498	-0.9%	2.39	1,082,226
2025-10-31	2,606,080	-17.8%	3.50	744,947
2025-10-15	3,170,620	-5.8%	4.15	763,132
2025-09-30	3,367,359	+45.3%	3.26	1,032,185

import finzdata as yf
yf.Ticker("IWB").short_interest          # every report since 2017
yf.Client().short_interest(["IWB"], start="2018-01-01")