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SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Short Interest Ratio & Short Volume

SPDR Bloomberg 1-3 Month T-Bill ETF logo
$91.52 +0.01 (+0.01%)
As of 01:11 PM Eastern
This is a fair market value price provided by Massive. Learn more.
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SPDR Bloomberg 1-3 Month T-Bill ETF Short Interest Overview

As of September 30, 2026, SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) had a short interest of 13.04 million shares sold short, representing 2.35% of the public float. This marks a 25.27% increase in short interest since the prior report. The short interest ratio (days to cover) is 1.0, meaning it would take 1.0 days of the average trading volume of 10.35 million shares to cover all short positions.

Current Short Interest
13,042,642 shares
Previous Short Interest
10,411,803 shares
Change Vs. Previous Month
25.27%
Dollar Volume Sold Short
$1.20 billion
Short Interest Ratio
1.0 Days to Cover
Last Record Date
September 30, 2026
Outstanding Shares
557,320,000 shares
Short Percent of Float
2.35%
Today's Trading Volume
4,166,834 shares
Average Trading Volume
10,345,755 shares
Today's Volume Vs. Average
40%
Short Selling SPDR Bloomberg 1-3 Month T-Bill ETF?
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

BIL Short Interest Over Time

BIL Days to Cover Over Time

BIL Percentage of Float Shorted Over Time

SPDR Bloomberg 1-3 Month T-Bill 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
9/30/202613,042,642 shares $1.20 billion +25.3%2.3%1 $91.64
9/15/202610,411,803 shares $952.78 million +17.9%2.0%1.04 $91.51
8/31/20268,833,525 shares $809.68 million -6.0%1.7%1.1 $91.66
8/14/20269,396,860 shares $860.09 million +15.1%1.8%0.96 $91.53
7/31/20268,166,261 shares $748.68 million -8.1%1.6%0.89 $91.68
7/15/20268,884,051 shares $813.07 million -17.2%1.7%0.89 $91.52
6/30/202610,723,875 shares $982.74 million +35.3%2.1%1.06 $91.64
6/15/20267,927,231 shares $725.42 million -16.8%1.6%0.67 $91.51
5/29/20269,528,247 shares $873.36 million +12.6%1.9%0.98 $91.66
5/15/20268,464,353 shares $774.74 million +11.1%1.7%0.97 $91.53
4/30/20267,619,901 shares $698.29 million +9.8%1.5%0.76 $91.64
4/15/20266,939,924 shares $635.07 million -27.0%1.4%0.46 $91.51
3/31/20269,511,213 shares $871.61 million +20.3%1.9%0.62 $91.64
3/13/20267,904,960 shares $723.38 million -0.5%1.7%0.75 $91.51
2/27/20267,943,050 shares $727.74 million +13.2%1.7%1.12 $91.62
2/13/20267,016,351 shares $642.07 million +9.4%1.4%0.69 $91.51
1/30/20266,416,112 shares $588.04 million +58.2%1.4%0.71 $91.65
1/15/20264,055,219 shares $371.05 million +109.0%0.9%0.48 $91.50
12/31/20251,940,422 shares $177.32 million -53.7%0.4%0.24 $91.38
12/15/20254,194,833 shares $384.25 million +45.8%0.9%0.52 $91.60
11/28/20252,876,962 shares $263.87 million +2.1%0.6%0.32 $91.72
11/14/20252,817,137 shares $258.05 million +1.2%0.6%0.26 $91.60
10/31/20252,783,821 shares $255.44 million -5.2%0.6%0.27 $91.76
10/15/20252,940,000 shares $269.27 million +9.3%0.6%0.3 $91.59
9/30/20252,690,000 shares $246.81 million +56.4%N/A0.3 $91.75
9/15/20251,720,000 shares $157.57 million +17.0%N/A0.2 $91.61
8/31/20251,470,000 shares $134.90 million -32.9%0.3%0.2 $91.77
8/15/20252,190,000 shares $200.65 million +48.0%N/A0.2 $91.62
7/31/20251,480,000 shares $135.79 million -35.9%0.3%0.2 $91.75
7/15/20252,310,000 shares $211.55 million +38.3%N/A0.2 $91.58
6/30/20251,670,000 shares $153.19 million -10.2%0.4%0.1 $91.73
6/15/20251,860,000 shares $170.34 million -6.1%0.4%0.1 $91.58
5/31/20251,980,000 shares $181.67 million +62.3%0.4%0.1 $91.75
5/15/20251,220,000 shares $111.70 million -9.6%N/A0.1 $91.56
4/30/20251,350,000 shares $123.82 million -74.6%N/A0.1 $91.72
4/15/20255,310,000 shares $486.29 million +129.9%N/A0.4 $91.58
3/14/20253,100,000 shares $283.90 million -33.6%N/A0.3 $91.58
2/28/20254,670,000 shares $428.33 million +52.6%N/A0.5 $91.72
2/14/20253,060,000 shares $280.23 million -29.8%N/A0.4 $91.58
1/31/20254,360,000 shares $400.03 million +13.0%N/A0.6 $91.75
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1/15/20253,860,000 shares $353.50 million +6.9%N/A0.5 $91.58

BIL Short Interest - Frequently Asked Questions

Short interest is the volume of SPDR Bloomberg 1-3 Month T-Bill ETF shares that have been sold short but have not yet been covered or closed out. As of September 30th, traders have sold 13,042,642 shares of BIL short. 2.35% of SPDR Bloomberg 1-3 Month T-Bill ETF's shares are currently sold short. Learn More on SPDR Bloomberg 1-3 Month T-Bill 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. BIL shares currently have a short interest ratio of 1.0. Learn More on SPDR Bloomberg 1-3 Month T-Bill 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. 2.35% of SPDR Bloomberg 1-3 Month T-Bill ETF's floating shares are currently sold short.

SPDR Bloomberg 1-3 Month T-Bill ETF saw a increase in short interest in September. As of September 30th, there was short interest totaling 13,042,642 shares, an increase of 25.3% from the previous total of 10,411,803 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.

2.35% of SPDR Bloomberg 1-3 Month T-Bill ETF's shares are currently sold short. Here is how the short interest of companies compare to SPDR Bloomberg 1-3 Month T-Bill ETF: iShares 20+ Year Treasury Bond ETF (18.57%), iShares 7-10 Year Treasury Bond ETF (5.00%), iShares 0-3 Month Treasury Bond ETF (0.71%), iShares 1-3 Year Treasury Bond ETF (6.29%), WisdomTree Floating Rate Treasury Fund (1.03%), iShares Short Treasury Bond ETF (2.81%), iShares 3-7 Year Treasury Bond ETF (3.50%), Schwab Short-Term U.S. Treasury ETF (0.27%), Schwab Intermediate-Term U.S. Treasury ETF (0.21%), Vanguard 0-3 Month Treasury Bill ETF (0.19%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($75.10 billion), Invesco QQQ ($52.12 billion), iShares Russell 2000 ETF ($25.28 billion), SPDR S&P Biotech ETF ($11.70 billion), Nebius Group N.V. ($10.54 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($9.69 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($9.22 billion), iShares 20+ Year Treasury Bond ETF ($8.80 billion), Financial Select Sector SPDR Fund ($7.65 billion), and Lumentum Holdings Inc. ($7.23 billion). View all of the most shorted stocks.

Short selling BIL is an investing strategy that aims to generate trading profit from SPDR Bloomberg 1-3 Month T-Bill ETF as its price is falling. BIL shares are trading up $0.02 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 SPDR Bloomberg 1-3 Month T-Bill ETF occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of BIL, 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 BIL, twice per month. The most recent reporting period available is September, 30 2026.

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

  • 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.


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Short Interest Tools

Short interest data for NYSEARCA:BIL is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 10/9/2026. FINRA publishes updated short interest twice a month.
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