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Lyell Immunopharma (LYEL) Short Interest Ratio & Short Volume

Lyell Immunopharma logo
$14.53 -0.08 (-0.55%)
As of 08/28/2026 04:00 PM Eastern
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Lyell Immunopharma Short Interest Overview

As of August 14, 2026, Lyell Immunopharma (LYEL) had a short interest of 1.15 million shares sold short, representing 5.01% of the public float. This marks a -6.49% decrease in short interest since the prior report. The short interest ratio (days to cover) is 6.3, meaning it would take 6.3 days of the average trading volume of 163,431 shares to cover all short positions.

Current Short Interest
1,151,707 shares
Previous Short Interest
1,231,583 shares
Change Vs. Previous Month
-6.49%
Dollar Volume Sold Short
$16.07 million
Short Interest Ratio
6.3 Days to Cover
Last Record Date
August 14, 2026
Outstanding Shares
24,500,000 shares
Short Percent of Float
5.01%
Today's Trading Volume
78,121 shares
Average Trading Volume
163,431 shares
Today's Volume Vs. Average
48%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

LYEL Short Interest Over Time

LYEL Days to Cover Over Time

LYEL Percentage of Float Shorted Over Time

Lyell Immunopharma 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
8/14/20261,151,707 shares $16.07 million -6.5%5.0%6.26 $13.95
7/31/20261,231,583 shares $15.94 million +0.9%5.4%8.66 $12.94
7/15/20261,220,497 shares $17.40 million -0.2%5.3%6.7 $14.26
6/30/20261,223,220 shares $17.19 million -7.1%5.6%3.44 $14.05
6/15/20261,316,562 shares $17.84 million -2.7%6.0%9.62 $13.55
5/29/20261,353,275 shares $23.45 million +1.0%6.2%16.21 $17.33
5/15/20261,340,406 shares $24.02 million -0.3%6.1%23.25 $17.92
4/30/20261,344,189 shares $26.52 million +8.9%6.1%18.78 $19.73
4/15/20261,234,370 shares $29.43 million +8.4%5.6%12.04 $23.84
3/31/20261,138,296 shares $22.83 million +21.1%5.0%12.78 $20.06
3/13/2026940,269 shares $19.98 million +15.3%5.2%8.59 $21.25
2/27/2026815,248 shares $19.57 million +37.7%4.9%7.63 $24.00
2/13/2026592,027 shares $15.30 million +13.6%2.7%6.28 $25.84
1/30/2026521,115 shares $12.51 million +28.0%3.2%6.09 $24.00
1/15/2026407,278 shares $9.34 million +69.2%2.5%3.96 $22.93
12/31/2025240,730 shares $7.41 million +46.4%1.5%1.58 $30.78
12/15/2025164,482 shares $5.33 million +1.7%1.0%2.44 $32.40
11/28/2025161,792 shares $5.24 million -0.8%1.0%3.35 $32.40
11/14/2025163,125 shares $2.76 million -1.9%1.0%5.91 $16.93
10/31/2025166,193 shares $2.77 million -9.6%1.1%6.54 $16.66
10/15/2025183,900 shares $3.20 million -21.1%2.1%3.5 $17.38
9/30/2025233,100 shares $3.79 million +43.4%2.7%4.4 $16.24
9/15/2025162,600 shares $2.13 million +11.6%1.9%2.1 $13.13
8/31/2025145,700 shares $1.61 million +9.6%1.7%1.7 $11.08
8/15/2025133,000 shares $1.41 million -29.3%2.4%1 $10.58
7/31/2025188,200 shares $2.22 million -22.8%3.3%1.3 $11.81
7/15/2025243,800 shares $2.22 million -6.5%3.6%1.9 $9.10
6/30/2025260,600 shares $2.30 million -26.7%4.0%2 $8.84
6/15/2025355,300 shares $3.46 million -33.2%5.6%3.4 $9.74
5/31/2025531,500 shares $0.00 -94.5%8.8%5.7 $0.00
5/15/20259,710,000 shares $3.90 million +71.6%8.1%12.6 $0.40
4/30/20255,660,000 shares $2.69 million +0.4%4.5%5.9 $0.48
4/15/20255,640,000 shares $2.59 million -1.2%4.5%5.8 $0.46
3/31/20255,710,000 shares $3.07 million -4.5%4.6%5.7 $0.54
3/15/20255,980,000 shares $3.50 million -26.1%4.8%5.5 $0.59
2/28/20258,090,000 shares $5.75 million -16.2%6.5%7 $0.71
2/15/20259,650,000 shares $5.89 million -16.3%7.7%7.6 $0.61
1/31/202511,530,000 shares $6.81 million -7.0%7.6%9.4 $0.59
1/15/202512,400,000 shares $7.41 million +0.7%8.2%8.2 $0.60
12/31/202412,310,000 shares $7.88 million +12.0%8.5%8.5 $0.64
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12/15/202410,990,000 shares $7.41 million +16.3%7.6%7.7 $0.67
11/30/20249,450,000 shares $8.93 million -1.6%7.2%7.3 $0.95
11/15/20249,600,000 shares $10.56 million -13.8%7.7%7.7 $1.10
10/31/202411,140,000 shares $10.70 million +3.5%8.9%10.3 $0.96
10/15/202410,760,000 shares $12.59 million +0.9%9.4%17.1 $1.17
9/30/202410,660,000 shares $14.71 million -19.4%9.4%16 $1.38
9/15/202413,220,000 shares $16.26 million -3.9%11.6%13.8 $1.23
8/31/202413,760,000 shares $19.95 million -8.5%12.1%14.6 $1.45
8/15/202415,030,000 shares $18.86 million -7.9%13.3%15.9 $1.26
7/31/202416,320,000 shares $26.28 million +1.2%13.6%16.9 $1.61
7/15/202416,130,000 shares $27.74 million -10.0%13.6%16.6 $1.72
6/30/202417,920,000 shares $25.98 million -25.8%15.1%16.9 $1.45
6/15/202424,150,000 shares $56.99 million +19.6%20.4%30.6 $2.36
5/31/202420,200,000 shares $55.95 million +0.5%17.1%25.2 $2.77
5/15/202420,100,000 shares $52.46 million +0.7%17.0%23.3 $2.61
4/30/202419,970,000 shares $43.33 million +9.5%16.9%22.3 $2.17
4/15/202418,230,000 shares $43.75 million +0.7%15.5%19.8 $2.40
3/31/202418,100,000 shares $40.36 million +74.4%15.5%18.8 $2.23
3/15/202410,380,000 shares $22.42 million -5.2%8.9%10.3 $2.16
2/29/202410,950,000 shares $31.97 million -39.6%9.4%8.9 $2.92
2/15/202418,130,000 shares $34.45 million +67.3%15.7%14.5 $1.90
1/31/202410,840,000 shares $19.84 million -30.6%9.4%8.2 $1.83
1/15/202415,620,000 shares $34.68 million +4.4%12.7%11.8 $2.22
12/31/202314,960,000 shares $29.02 million -13.2%12.1%12.2 $1.94
12/15/202317,240,000 shares $33.10 million -0.6%14.0%15.3 $1.92
11/30/202317,340,000 shares $30.00 million -2.3%14.1%18.8 $1.73
11/15/202317,740,000 shares $36.37 million -7.6%14.4%20.3 $2.05
10/31/202319,200,000 shares $31.78 million -7.3%15.8%25.1 $1.66
10/15/202320,720,000 shares $33.98 million -2.3%17.1%29.2 $1.64
9/30/202321,210,000 shares $31.18 million +1.3%17.5%30 $1.47
9/15/202320,930,000 shares $35.37 million -5.2%17.2%28.3 $1.69
8/31/202322,070,000 shares $52.75 million -3.7%18.3%24.3 $2.39
8/15/202322,910,000 shares $52.46 million -2.5%19.0%23 $2.29
7/31/202323,500,000 shares $67.92 million +1.5%19.6%22 $2.89
7/15/202323,160,000 shares $67.86 million -1.2%19.3%20.9 $2.93
6/30/202323,450,000 shares $74.57 million +3.9%19.6%20.8 $3.18
6/15/202322,580,000 shares $87.16 million +4.9%18.9%18.7 $3.86
5/31/202321,530,000 shares $68.68 million +2.8%18.0%20.1 $3.19
5/15/202320,950,000 shares $63.06 million +3.2%17.5%19.8 $3.01
4/30/202320,300,000 shares $41.21 million -0.7%17.0%20.1 $2.03
4/15/202320,450,000 shares $48.26 million -1.8%17.1%20.9 $2.36
3/31/202320,830,000 shares $49.16 million +1.3%17.4%20.2 $2.36
3/15/202320,560,000 shares $45.03 million +14.2%17.2%19.6 $2.19
2/28/202318,010,000 shares $38.72 million +5.4%15.1%16.2 $2.15
2/15/202317,080,000 shares $42.70 million -2.1%14.3%15.7 $2.50
1/31/202317,440,000 shares $57.03 million -2.9%14.6%15.2 $3.27
1/15/202317,960,000 shares $58.01 million -9.4%15.0%15.5 $3.23
12/30/202219,820,000 shares $68.78 million +15.8%20.3%18 $3.47
12/15/202217,110,000 shares $56.12 million -2.0%17.5%16.1 $3.28
11/30/202217,450,000 shares $73.46 million -5.7%22.0%15.3 $4.21
Why Boston Ships In Natural Gas It Already Has at Home (Ad)

A tanker called the Iberica Knutsen once sailed 2,272 miles from Trinidad and Tobago to deliver liquefied natural gas to Boston. The odd part: the Marcellus Shale, one of the largest natural gas reserves in the world, sits just a few hundred miles away. Porter Stansberry spent years digging into why this happens and what it means for the American energy system.tc pixel

Uncover the full story behind Boston's costly LNG imports
11/15/202218,510,000 shares $85.15 million -2.5%23.4%16.5 $4.60
10/31/202218,990,000 shares $111.66 million -1.1%23.4%18.6 $5.88
10/15/202219,200,000 shares $125.57 million +5.1%23.6%18.6 $6.54
9/30/202218,270,000 shares $133.92 million +19.3%22.5%18.6 $7.33
9/15/202215,320,000 shares $121.95 million +7.0%19.1%14.7 $7.96
8/31/202214,320,000 shares $95.94 million -7.2%18.1%15.6 $6.70
8/15/202215,430,000 shares $116.03 million -4.6%19.5%17.1 $7.52
7/31/202216,180,000 shares $90.12 million -4.9%25.4%17.1 $5.57
7/15/202217,010,000 shares $100.36 million -2.4%26.7%19.1 $5.90
6/30/202217,430,000 shares $113.64 million +6.9%27.4%19.3 $6.52
6/15/202216,310,000 shares $77.15 million +1.8%25.6%17.9 $4.73
5/31/202216,030,000 shares $66.36 million +5.6%25.4%13 $4.14
5/15/202215,180,000 shares $60.57 million -2.9%24.1%11.9 $3.99
4/30/202215,640,000 shares $80.23 million -6.0%26.4%12.3 $5.13
4/15/202216,630,000 shares $89.64 million +5.3%28.1%13 $5.39
3/31/202215,800,000 shares $79.79 million +29.7%26.7%12.3 $5.05
3/15/202212,180,000 shares $73.20 million +21.7%21.0%9 $6.01
2/28/202210,010,000 shares $72.47 million +6.0%17.3%11.3 $7.24
2/15/20229,440,000 shares $64.38 million +9.6%16.4%12.4 $6.82
1/31/20228,610,000 shares $48.90 million +2.7%14.9%12.9 $5.68
1/15/20228,380,000 shares $50.62 million +10.1%14.5%14.8 $6.04
12/31/20217,610,000 shares $58.90 million +22.4%13.2%15.1 $7.74
12/15/20216,220,000 shares $55.98 million +17.4%10.8%13 $9.00
11/30/20215,300,000 shares $50.62 million +7.1%9.9%12.1 $9.55
11/15/20214,950,000 shares $54.70 million No Change9.3%10.7 $11.05
10/29/20214,950,000 shares $69.00 million +3.8%9.2%11.5 $13.94
10/15/20214,770,000 shares $63.35 million +11.7%8.9%11 $13.28
9/30/20214,270,000 shares $63.20 million +10.3%8.0%9.1 $14.80
9/15/20213,870,000 shares $51.01 million +15.2%5.2%8.2 $13.18
8/31/20213,360,000 shares $53.05 million +10.2%4.4%7.1 $15.79

LYEL Short Interest - Frequently Asked Questions

Short interest is the volume of Lyell Immunopharma shares that have been sold short but have not yet been covered or closed out. As of August 14th, investors have sold 1,151,707 shares of LYEL short. 5.01% of Lyell Immunopharma's shares are currently sold short. Learn More on Lyell Immunopharma'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. LYEL shares currently have a short interest ratio of 6.3. Learn More on Lyell Immunopharma'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. 5.01% of Lyell Immunopharma's floating shares are currently sold short.

Lyell Immunopharma saw a decrease in short interest in the month of August. As of August 14th, there was short interest totaling 1,151,707 shares, a decrease of 6.5% from the previous total of 1,231,583 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.

5.01% of Lyell Immunopharma's shares are currently sold short. Here is how the short interest of companies in the industry of "biotechnology" compare to Lyell Immunopharma: MeiraGTx Holdings PLC (4.20%), Cullinan Therapeutics, Inc. (18.00%), Omeros Corporation (22.60%), Aktis Oncology (6.41%), Oric Pharmaceuticals, Inc. (18.82%), ArriVent BioPharma, Inc. (18.25%), Replimune Group, Inc. (28.02%), Jade Biosciences, Inc. (19.72%), Vor Biopharma Inc. (12.46%), MannKind Corporation (9.13%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($71.57 billion), Invesco QQQ ($46.97 billion), iShares Russell 2000 ETF ($24.02 billion), Nebius Group N.V. ($15.37 billion), Sandisk Corporation ($12.60 billion), SPDR S&P Biotech ETF ($12.14 billion), Western Digital Corporation ($10.32 billion), iShares 20+ Year Treasury Bond ETF ($8.38 billion), VanEck Semiconductor ETF ($7.62 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($7.07 billion). View all of the most shorted stocks.

Short selling LYEL is an investing strategy that aims to generate trading profit from Lyell Immunopharma as its price is falling. LYEL shares are trading down $0.08 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 Lyell Immunopharma 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 LYEL, 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 LYEL, twice per month. The most recent reporting period available is August, 14 2026.

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

  • 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:LYEL is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 8/25/2026. FINRA publishes updated short interest twice a month.
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