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iShares Core 1-5 Year USD Bond ETF (ISTB) Short Interest Ratio & Short Volume

iShares Core 1-5 Year USD Bond ETF logo
$47.10 -0.06 (-0.13%)
Closing price 04:00 PM Eastern
Extended Trading
$47.10 0.00 (0.00%)
As of 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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iShares Core 1-5 Year USD Bond ETF Short Interest Overview

As of September 15, 2026, iShares Core 1-5 Year USD Bond ETF (ISTB) had a short interest of 140,195 shares sold short, representing 0.13% of the public float. This marks a -76.68% decrease in short interest since the prior report. The short interest ratio (days to cover) is 0.4, meaning it would take 0.4 days of the average trading volume of 502,070 shares to cover all short positions.

Current Short Interest
140,195 shares
Previous Short Interest
601,181 shares
Change Vs. Previous Month
-76.68%
Dollar Volume Sold Short
$6.66 million
Short Interest Ratio
0.4 Days to Cover
Last Record Date
September 15, 2026
Outstanding Shares
108,900,000 shares
Short Percent of Float
0.13%
Today's Trading Volume
627,774 shares
Average Trading Volume
502,070 shares
Today's Volume Vs. Average
125%
Short Selling iShares Core 1-5 Year USD Bond ETF?
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

ISTB Short Interest Over Time

ISTB Days to Cover Over Time

ISTB Percentage of Float Shorted Over Time

iShares Core 1-5 Year USD Bond ETF Tesla Short Interest History & Recent Changes

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Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
9/15/2026140,195 shares $6.66 million -76.7%0.1%0.36 $47.47
8/31/2026601,181 shares $28.86 million +277.8%0.6%1.56 $48.00
8/14/2026159,137 shares $7.65 million +194.4%0.1%0.31 $48.07
7/31/202654,059 shares $2.60 million -80.9%0.1%0.14 $48.03
7/15/2026282,889 shares $13.61 million -48.6%0.3%0.67 $48.10
6/30/2026550,165 shares $26.55 million +454.6%0.5%1.35 $48.25
6/15/202699,193 shares $4.79 million -75.9%0.1%0.12 $48.25
5/29/2026411,262 shares $19.90 million +848.4%0.4%0.59 $48.39
5/15/202643,365 shares $2.09 million +129.9%0.0%0.09 $48.13
4/30/202618,864 shares $913.96 thousand -78.7%0.0%0.05 $48.45
4/15/202688,571 shares $4.30 million +117.8%0.1%0.2 $48.52
3/31/202640,676 shares $1.97 million -39.6%0.0%0.08 $48.46
3/13/202667,326 shares $3.26 million +75.6%0.1%0.17 $48.46
2/27/202638,343 shares $1.88 million -65.2%0.0%0.08 $49.02
2/13/2026110,237 shares $5.39 million -15.5%0.1%0.25 $48.94
1/30/2026130,461 shares $6.38 million -37.9%0.1%0.24 $48.89
1/15/2026210,176 shares $10.24 million +159.0%0.2%0.41 $48.74
12/31/202581,159 shares $3.96 million +445.7%0.1%0.23 $48.75
12/15/202514,873 shares $725.36 thousand -75.6%0.0%0.03 $48.77
11/28/202561,067 shares $2.99 million -65.0%0.1%0.12 $48.94
11/14/2025174,444 shares $8.50 million -15.1%0.2%0.53 $48.71
10/31/2025205,472 shares $10.04 million +8.4%0.2%0.62 $48.86
10/15/2025189,500 shares $9.26 million +315.6%0.2%0.5 $48.88
9/30/202545,600 shares $2.23 million -50.1%N/A0.1 $48.84
9/15/202591,300 shares $4.46 million -75.1%N/A0.2 $48.90
8/31/2025367,300 shares $17.94 million +380.8%0.4%1 $48.84
8/15/202576,400 shares $3.72 million -60.4%N/A0.2 $48.63
7/31/2025193,000 shares $9.36 million +77.4%0.2%0.5 $48.51
7/15/2025108,800 shares $5.26 million +43.5%N/A0.3 $48.31
6/30/202575,800 shares $3.69 million -9.3%0.1%0.2 $48.65
6/15/202583,600 shares $4.03 million +97.6%0.1%0.2 $48.25
5/31/202542,300 shares $2.05 million -59.6%0.0%0.1 $48.36
5/15/2025104,700 shares $5.05 million -19.0%0.1%0.2 $48.19
4/30/2025129,300 shares $6.28 million -60.2%N/A0.2 $48.58
4/15/2025324,800 shares $15.63 million +73.0%0.3%0.6 $48.11
3/31/2025187,800 shares $9.08 million +16.2%0.2%0.3 $48.35
3/15/2025161,600 shares $7.77 million -6.5%0.2%0.4 $48.11
2/28/2025172,900 shares $8.36 million -30.3%0.2%0.4 $48.33
2/15/2025248,100 shares $11.90 million -2.6%0.3%0.6 $47.96
1/31/2025254,800 shares $12.24 million -22.4%N/A0.6 $48.03
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1/15/2025328,300 shares $15.69 million -67.5%N/A0.8 $47.80
12/31/20241,010,000 shares $48.25 million +213.2%N/A2.8 $47.77
12/15/2024322,500 shares $15.45 million +12.6%N/A0.9 $47.92
11/30/2024286,300 shares $13.78 million -17.0%N/A0.9 $48.13
11/15/2024345,000 shares $16.50 million -29.9%N/A1 $47.82
10/31/2024492,000 shares $23.64 million +12.2%N/A1.5 $48.04
10/15/2024438,500 shares $21.16 million +430.2%N/A1.3 $48.26
9/30/202482,700 shares $4.03 million -59.9%N/A0.2 $48.68
9/15/2024206,400 shares $10.04 million +254.0%N/A0.6 $48.65
8/31/202458,300 shares $2.82 million -31.5%N/A0.2 $48.36
8/15/202485,100 shares $4.09 million +25.9%N/A0.3 $48.08
7/31/202467,600 shares $3.24 million -49.1%N/A0.2 $48.00
7/15/2024132,900 shares $6.34 million No ChangeN/A0.4 $47.69
1/15/202467,600 shares $3.23 million +973.0%N/A0.1 $47.71
12/31/20236,300 shares $299.63 thousand -97.9%N/A0 $47.56
12/15/2023292,900 shares $13.85 million +81.8%N/A0.6 $47.29
11/30/2023161,100 shares $7.57 million +134.8%N/A0.4 $47.02
11/15/202368,600 shares $3.20 million -32.9%N/A0.1 $46.61
10/31/2023102,300 shares $4.73 million -59.3%N/A0.2 $46.23
10/15/2023251,100 shares $11.63 million +941.9%N/A0.6 $46.30
9/30/202324,100 shares $1.12 million -96.9%N/A0.1 $46.38
9/15/2023770,600 shares $35.81 million +52.1%N/A1.8 $46.47
8/31/2023506,700 shares $23.68 million -11.1%N/A1 $46.74
8/15/2023570,100 shares $26.49 million -49.6%N/A1.2 $46.46
7/31/20231,130,000 shares $52.83 million +7.6%N/A2.2 $46.75
7/15/20231,050,000 shares $49.07 million +106.7%N/A1.9 $46.73
6/30/2023508,000 shares $23.69 million +203.3%N/A0.9 $46.64
6/15/2023167,500 shares $7.84 million -67.5%N/A0.3 $46.80
5/31/2023515,300 shares $24.18 million +1.3%N/A0.9 $46.93
5/15/2023508,600 shares $24.02 million +818.1%N/A0.8 $47.23
4/30/202355,400 shares $2.62 million -95.1%N/A0.1 $47.24
4/15/20231,120,000 shares $52.76 million +156.5%N/A1.4 $47.11
3/31/2023436,600 shares $20.59 million -77.5%N/A0.5 $47.16
3/15/20231,940,000 shares $91.14 million +703.0%N/A2 $46.98
2/28/2023241,600 shares $11.23 million -65.4%N/A0.2 $46.47
2/15/2023698,100 shares $32.53 million +1.9%N/A0.6 $46.60
1/31/2023685,300 shares $32.31 million +301.0%N/A0.6 $47.15
1/15/2023170,900 shares $8.04 million +1.8%N/A0.2 $47.02
12/30/2022167,900 shares $7.80 million -79.6%N/A0.2 $46.44
12/15/2022823,400 shares $38.49 million +71.8%N/A0.8 $46.75
11/30/2022479,300 shares $22.37 million -6.5%N/A0.5 $46.67
11/15/2022512,600 shares $23.79 million -12.4%N/A0.5 $46.42
10/31/2022585,000 shares $26.88 million +187.9%N/A0.5 $45.95
10/15/2022203,200 shares $9.29 million No ChangeN/A0.2 $45.74
9/30/2022766,300 shares $35.33 million +20.2%N/A0.7 $46.10
9/15/2022637,800 shares $29.78 million +170.7%N/A0.6 $46.69
8/31/2022235,600 shares $11.10 million -6.7%N/A0.2 $47.13
8/15/2022252,500 shares $12.03 million -78.8%N/A0.2 $47.63
7/31/20221,190,000 shares $57.00 million -21.7%N/A1.1 $47.90
7/15/20221,520,000 shares $71.90 million +821.8%N/A1.3 $47.30
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6/30/2022164,900 shares $7.82 million -69.0%N/A0.1 $47.40
6/15/2022532,600 shares $25.05 million -30.8%N/A0.4 $47.04
5/31/2022769,300 shares $36.95 million -21.8%N/A0.6 $48.03
5/15/2022983,100 shares $46.99 million +40.1%N/A0.8 $47.80
4/30/2022701,500 shares $33.63 million -59.0%N/A0.6 $47.94
4/15/20221,710,000 shares $82.20 million +114.6%N/A1.5 $48.07
3/31/2022797,000 shares $38.62 million +341.3%N/A0.8 $48.46
3/15/2022180,600 shares $8.79 million -71.9%N/A0.2 $48.66
2/28/2022643,100 shares $31.78 million +205.2%N/A0.7 $49.42
2/15/2022210,700 shares $10.39 million +1,295.4%N/A0.2 $49.33
1/31/202215,100 shares $753.19 thousand -98.3%N/A0 $49.88
1/15/2022906,300 shares $45.36 million +746.2%N/A1.2 $50.05
12/31/2021107,100 shares $5.40 million -92.6%N/A0.2 $50.43
12/15/20211,450,000 shares $73.14 million +10,968.7%N/A2.4 $50.44
11/30/202113,100 shares $662.60 thousand -92.3%N/A0 $50.58
11/15/2021170,200 shares $8.61 million +542.3%N/A0.3 $50.59
10/29/202126,500 shares $1.34 million -13.4%N/A0 $50.75
10/15/202130,600 shares $1.56 million -80.2%N/A0.1 $50.82

ISTB Short Interest - Frequently Asked Questions

Short interest is the volume of iShares Core 1-5 Year USD Bond ETF shares that have been sold short but have not yet been covered or closed out. As of September 15th, investors have sold 140,195 shares of ISTB short. 0.13% of iShares Core 1-5 Year USD Bond ETF's shares are currently sold short. Learn More on iShares Core 1-5 Year USD Bond ETF's current short interest.

The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. ISTB shares currently have a short interest ratio of 0.4. Learn More on iShares Core 1-5 Year USD Bond ETF's short interest ratio.

Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 0.13% of iShares Core 1-5 Year USD Bond ETF's floating shares are currently sold short.

iShares Core 1-5 Year USD Bond ETF saw a drop in short interest in the month of September. As of September 15th, there was short interest totaling 140,195 shares, a drop of 76.7% from the previous total of 601,181 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment.

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($75.21 billion), Invesco QQQ ($46.31 billion), iShares Russell 2000 ETF ($27.98 billion), SPDR S&P Biotech ETF ($11.59 billion), Nebius Group N.V. ($9.70 billion), Canadian Natural Resources Limited ($9.42 billion), iShares 20+ Year Treasury Bond ETF ($8.70 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($8.53 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.79 billion), and Financial Select Sector SPDR Fund ($7.74 billion). View all of the most shorted stocks.

Short selling ISTB is an investing strategy that aims to generate trading profit from iShares Core 1-5 Year USD Bond ETF as its price is falling. ISTB shares are trading down $0.06 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit.

A short squeeze for iShares Core 1-5 Year USD Bond ETF occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of ISTB, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including ISTB, twice per month. The most recent reporting period available is September, 15 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like ISTB:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


Related Companies
Short Interest Tools

Short interest data for NASDAQ:ISTB is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 9/24/2026. FINRA publishes updated short interest twice a month.
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