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BlackRock Science and Technology Trust (BST) Short Interest Ratio & Short Volume

BlackRock Science and Technology Trust logo
$48.86 +1.54 (+3.26%)
Closing price 03:59 PM Eastern
Extended Trading
$48.56 -0.30 (-0.61%)
As of 07:08 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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BlackRock Science and Technology Trust Short Interest Overview

As of May 29, 2026, BlackRock Science and Technology Trust (BST) had a short interest of 23,049 shares sold short. This marks a 76.97% increase in short interest since the prior report. The short interest ratio (days to cover) is 0.2, meaning it would take 0.2 days of the average trading volume of 104,071 shares to cover all short positions.

Current Short Interest
23,049 shares
Previous Short Interest
13,024 shares
Change Vs. Previous Month
76.97%
Dollar Volume Sold Short
$1.14 million
Short Interest Ratio
0.2 Days to Cover
Last Record Date
May 29, 2026
Today's Trading Volume
80,912 shares
Average Trading Volume
104,071 shares
Today's Volume Vs. Average
78%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

BST Short Interest Over Time

BST Days to Cover Over Time

BST Percentage of Float Shorted Over Time

BlackRock Science and Technology Trust 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
5/29/202623,049 shares $1.14 million +77.0%N/A0.15 $49.58
5/15/202613,024 shares $591.52 thousand +466.3%N/A0.11 $45.42
4/30/20262,300 shares $96.57 thousand -61.8%N/A0.02 $41.99
4/15/20266,025 shares $246.87 thousand -72.7%N/A0.07 $40.98
3/31/202622,085 shares $805.00 thousand -14.9%N/A0.21 $36.45
9/15/202526,400 shares $1.08 million -40.3%N/A0.3 $40.82
8/31/202544,200 shares $1.76 million No ChangeN/A0.5 $39.77
6/15/202529,100 shares $1.07 million +15.5%N/A0.3 $36.76
5/31/202525,200 shares $920.93 thousand -60.3%N/A0.2 $36.55
5/15/202563,400 shares $2.29 million +50.6%N/A0.5 $36.17
4/30/202542,100 shares $1.41 million -31.4%N/A0.3 $33.38
4/15/202561,400 shares $1.99 million +1.8%N/A0.4 $32.45
3/31/202560,300 shares $1.99 million +5.2%N/A0.4 $32.97
3/15/202557,300 shares $1.95 million +12.4%N/A0.4 $34.10
2/28/202551,000 shares $1.86 million -5.2%N/A0.4 $36.50
2/15/202553,800 shares $2.09 million -31.3%N/A0.4 $38.90
1/31/202578,300 shares $2.96 million +135.8%N/A0.6 $37.86
1/15/202533,200 shares $1.24 million +331.2%N/A0.3 $37.22
12/31/20247,700 shares $281.51 thousand +185.2%N/A0.1 $36.56
12/15/20242,700 shares $101.28 thousand -91.9%N/A0 $37.51
11/30/202433,300 shares $1.23 million -18.8%N/A0.3 $37.01
11/15/202441,000 shares $1.46 million +37.1%N/A0.3 $35.70
10/31/202429,900 shares $1.07 million -47.0%N/A0.2 $35.66
10/15/202456,400 shares $2.07 million +889.5%N/A0.4 $36.76
9/30/20245,700 shares $202.01 thousand +58.3%N/A0 $35.44
9/15/20243,600 shares $124.67 thousand -45.5%N/A0 $34.63
8/31/20246,600 shares $232.39 thousand +100.0%N/A0.1 $35.21
8/15/20243,300 shares $115.34 thousand -81.9%N/A0 $34.95
7/31/202418,200 shares $647.92 thousand +156.3%N/A0.2 $35.60
7/15/20247,100 shares $270.16 thousand -51.0%N/A0.1 $38.05
6/30/202414,500 shares $546.07 thousand -41.1%N/A0.2 $37.66
6/15/202424,600 shares $925.45 thousand -15.2%N/A0.3 $37.62
5/31/202429,000 shares $1.06 million -43.3%N/A0.3 $36.42
5/15/202451,100 shares $1.87 million +148.1%N/A0.6 $36.60
4/30/202420,600 shares $714.92 thousand +80.7%N/A0.2 $34.71
4/15/202411,400 shares $394.10 thousand -54.2%N/A0.1 $34.57
3/31/202424,900 shares $919.31 thousand -16.4%N/A0.2 $36.92
3/15/202429,800 shares $1.08 million -43.6%N/A0.3 $36.14
2/29/202452,800 shares $1.94 million -27.7%N/A0.5 $36.77
2/15/202473,000 shares $2.74 million +93.1%N/A0.7 $37.59
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1/31/202437,800 shares $1.34 million +54.9%N/A0.4 $35.58
1/15/202424,400 shares $838.63 thousand -27.0%N/A0.2 $34.37
12/31/202333,400 shares $1.12 million -28.3%N/A0.3 $33.66
12/15/202346,600 shares $1.58 million +9.1%N/A0.5 $33.95
11/30/202342,700 shares $1.45 million -68.2%N/A0.4 $34.01
11/15/2023134,400 shares $4.49 million -24.2%N/A1.4 $33.43
10/31/2023177,300 shares $5.43 million +4.7%N/A1.9 $30.61
10/15/2023169,400 shares $5.37 million +106.3%N/A1.8 $31.71
9/30/202382,100 shares $2.58 million +6.2%N/A0.9 $31.41
9/15/202377,300 shares $2.46 million -8.3%N/A0.8 $31.82
8/31/202384,300 shares $2.84 million -33.8%N/A0.9 $33.70
8/15/2023127,400 shares $4.23 million +36.4%N/A1.3 $33.21
7/31/202393,400 shares $3.28 million -3.8%N/A0.9 $35.08
7/15/202397,100 shares $3.35 million -21.9%N/A1 $34.46
6/30/2023124,300 shares $4.28 million -13.6%N/A1.3 $34.44
6/15/2023143,800 shares $4.95 million -20.7%N/A1.5 $34.39
5/31/2023181,400 shares $6.00 million -13.9%N/A1.9 $33.06
5/15/2023210,700 shares $6.63 million -5.1%N/A2.3 $31.45
4/30/2023222,100 shares $6.97 million -0.3%N/A2.2 $31.36
4/15/2023222,800 shares $7.09 million -5.8%N/A1.9 $31.80
3/31/2023236,500 shares $7.65 million -19.2%N/A1.9 $32.34
3/15/2023292,600 shares $9.04 million +30.3%N/A2 $30.89
2/28/2023224,500 shares $7.06 million -32.5%N/A1.5 $31.45
2/15/2023332,500 shares $11.03 million -6.3%N/A2.1 $33.17
1/31/2023354,900 shares $11.77 million +55.7%N/A2.2 $33.17
1/15/2023228,000 shares $7.17 million +88.0%N/A1.5 $31.45
12/30/2022121,300 shares $3.44 million +1.3%N/A0.8 $28.37
12/15/2022119,800 shares $3.70 million -15.5%N/A0.8 $30.89
11/30/2022141,800 shares $4.59 million -9.7%N/A0.9 $32.34
11/15/2022157,100 shares $5.10 million +119.7%N/A1.1 $32.45
10/31/202271,500 shares $2.24 million +386.4%N/A0.5 $31.26
10/15/202214,700 shares $416.75 thousand No ChangeN/A0.1 $28.35
9/30/202227,400 shares $805.01 thousand -83.5%N/A0.2 $29.38
9/15/2022166,100 shares $5.50 million +30.6%N/A1.1 $33.11
8/31/2022127,200 shares $4.46 million -2.8%N/A0.9 $35.07
8/15/2022130,800 shares $5.03 million +321.9%N/A0.9 $38.46
7/31/202231,000 shares $1.15 million -55.6%N/A0.2 $37.15
7/15/202269,800 shares $2.36 million +67.4%N/A0.5 $33.86
6/30/202241,700 shares $1.35 million -15.1%N/A0.3 $32.49
6/15/202249,100 shares $1.64 million -69.4%N/A0.3 $33.46
5/31/2022160,400 shares $6.00 million +23.7%N/A1.1 $37.43
5/15/2022129,700 shares $4.68 million +256.3%N/A0.8 $36.09
4/30/202236,400 shares $1.37 million +283.2%N/A0.2 $37.64
4/15/20229,500 shares $377.91 thousand -62.2%N/A0.1 $39.78
3/31/202225,100 shares $1.09 million -76.7%N/A0.1 $43.27
3/15/2022107,600 shares $4.35 million +330.4%N/A0.6 $40.46
2/28/202225,000 shares $1.09 million -56.8%N/A0.1 $43.45
2/15/202257,800 shares $2.54 million +282.8%N/A0.3 $43.99
1/31/202215,100 shares $691.58 thousand -83.9%N/A0.1 $45.80
1/15/202293,600 shares $4.46 million +428.8%N/A0.5 $47.66
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12/31/202117,700 shares $884.47 thousand +15.7%N/A0.1 $49.97
12/15/202115,300 shares $771.73 thousand +159.3%N/A0.1 $50.44
11/30/20215,900 shares $308.22 thousand -52.0%N/A0 $52.24
11/15/202112,300 shares $678.96 thousand -62.0%N/A0.1 $55.20
10/29/202132,400 shares $1.77 million -12.2%N/A0.3 $54.67
10/15/202136,900 shares $1.97 million +190.6%N/A0.3 $53.35
9/30/202112,700 shares $662.43 thousand +28.3%N/A0.1 $52.16
9/15/20219,900 shares $536.28 thousand +147.5%N/A0.1 $54.17
8/31/20214,000 shares $219.48 thousand -51.8%N/A0 $54.87
8/13/20218,300 shares $448.45 thousand -67.6%N/A0.1 $54.03
7/30/202125,600 shares $1.37 million -93.7%N/A0.2 $53.70
7/15/2021403,800 shares $21.25 million +7.3%N/A3.2 $52.63
6/30/2021376,300 shares $22.42 million +139.2%N/A3.6 $59.59

BST Short Interest - Frequently Asked Questions

Short interest is the volume of BlackRock Science and Technology Trust shares that have been sold short but have not yet been closed out or covered. As of May 29th, investors have sold 23,049 shares of BST short. Learn More on BlackRock Science and Technology Trust'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. BST shares currently have a short interest ratio of 0.2. Learn More on BlackRock Science and Technology Trust's short interest ratio.

BlackRock Science and Technology Trust saw a increase in short interest during the month of May. As of May 29th, there was short interest totaling 23,049 shares, an increase of 77.0% from the previous total of 13,024 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 ($81.27 billion), Invesco QQQ ($49.06 billion), iShares Russell 2000 ETF ($23.61 billion), Western Digital Corporation ($16.93 billion), Sandisk Corporation ($15.61 billion), Salesforce Inc. ($11.65 billion), SPDR S&P Biotech ETF ($10.52 billion), Nebius Group N.V. ($10.24 billion), Lumentum Holdings Inc. ($8.74 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($8.21 billion). View all of the most shorted stocks.

Short selling BST is an investing strategy that aims to generate trading profit from BlackRock Science and Technology Trust as its price is falling. BST shares are trading up $1.54 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 BlackRock Science and Technology Trust 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 BST, 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 BST, twice per month. The most recent reporting period available is May, 29 2026.

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

  • 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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This page (NYSE:BST) was last updated on 6/18/2026 by MarketBeat.com Staff.
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